Got controller connected and working, buttons broken

Reviewed-on: #6

.gitignore

@@ -37,6 +37,12 @@ fp-info-cache
 
 # Archived Backups (KiCad 6.0)
 **/*-backups/*.zip
+**/.history/
 
 # Local project settings
-*.kicad_prl
+*.kicad_prl
+
+# for esp idf
+
+**/build/
+**/.cache/

PCBs/esp32-racer-B_Mask.gbr

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PCBs/esp32-racer-B_Paste.gbr

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PCBs/esp32-racer-Edge_Cuts.gbr

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PCBs/esp32-racer-NPTH.drl

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PCBs/esp32-racer-job.gbrjob

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+      "Application": "Pcbnew",
+      "Version": "10.0.0"
+    },
+    "CreationDate": "2026-04-16T08:54:22+12:00"
+  },
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+      "Name": "esp32-racer",
+      "GUID": "65737033-322d-4726-9163-65722e6b6963",
+      "Revision": "rev?"
+    },
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+      "Y": 80.05
+    },
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+    "BoardThickness": 1.6,
+    "Finish": "None"
+  },
+  "DesignRules": [
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+      "RegionToRegion": 0.2
+    }
+  ],
+  "FilesAttributes": [
+    {
+      "Path": "esp32-racer-F_Cu.gbr",
+      "FileFunction": "Copper,L1,Top",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-In1_Cu.gbr",
+      "FileFunction": "Copper,L2,Inr",
+      "FilePolarity": "Positive"
+    },
+    {
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+      "FileFunction": "Copper,L3,Inr",
+      "FilePolarity": "Positive"
+    },
+    {
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+    },
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+      "Name": "In1.Cu"
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+    {
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+    }
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PCBs/old/esp32-racer-B_Mask.gbr

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PCBs/old/esp32-racer-B_Paste.gbr

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PCBs/old/esp32-racer-Edge_Cuts.gbr

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+%FSLAX46Y46*%
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+G04 Created by KiCad (PCBNEW 10.0.0) date 2026-04-15 11:42:03*
+%MOMM*%
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PCBs/old/esp32-racer-NPTH.drl

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+M48
+; DRILL file KiCad 10.0.0 date 2026-04-15T11:42:13
+; FORMAT={-:-/ absolute / metric / decimal}
+; #@! TF.CreationDate,2026-04-15T11:42:13+12:00
+; #@! TF.GenerationSoftware,Kicad,Pcbnew,10.0.0
+; #@! TF.FileFunction,NonPlated,1,4,NPTH
+FMAT,2
+METRIC
+; #@! TA.AperFunction,NonPlated,NPTH,ComponentDrill
+T1C0.650
+%
+G90
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PCBs/old/esp32-racer-job.gbrjob

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+{
+  "Header": {
+    "GenerationSoftware": {
+      "Vendor": "KiCad",
+      "Application": "Pcbnew",
+      "Version": "10.0.0"
+    },
+    "CreationDate": "2026-04-15T11:42:03+12:00"
+  },
+  "GeneralSpecs": {
+    "ProjectId": {
+      "Name": "esp32-racer",
+      "GUID": "65737033-322d-4726-9163-65722e6b6963",
+      "Revision": "rev?"
+    },
+    "Size": {
+      "X": 160.05,
+      "Y": 80.05
+    },
+    "LayerNumber": 4,
+    "BoardThickness": 1.6,
+    "Finish": "None"
+  },
+  "DesignRules": [
+    {
+      "Layers": "Outer",
+      "PadToPad": 0.2,
+      "PadToTrack": 0.2,
+      "TrackToTrack": 0.2,
+      "MinLineWidth": 0.2,
+      "TrackToRegion": 0.2,
+      "RegionToRegion": 0.2
+    },
+    {
+      "Layers": "Inner",
+      "PadToPad": 0.0,
+      "PadToTrack": 0.0,
+      "TrackToTrack": 0.2,
+      "MinLineWidth": 0.2,
+      "TrackToRegion": 0.2,
+      "RegionToRegion": 0.2
+    }
+  ],
+  "FilesAttributes": [
+    {
+      "Path": "esp32-racer-F_Cu.gbr",
+      "FileFunction": "Copper,L1,Top",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-In1_Cu.gbr",
+      "FileFunction": "Copper,L2,Inr",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-In2_Cu.gbr",
+      "FileFunction": "Copper,L3,Inr",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-B_Cu.gbr",
+      "FileFunction": "Copper,L4,Bot",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-F_Paste.gbr",
+      "FileFunction": "SolderPaste,Top",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-B_Paste.gbr",
+      "FileFunction": "SolderPaste,Bot",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-F_Silkscreen.gbr",
+      "FileFunction": "Legend,Top",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-B_Silkscreen.gbr",
+      "FileFunction": "Legend,Bot",
+      "FilePolarity": "Positive"
+    },
+    {
+      "Path": "esp32-racer-F_Mask.gbr",
+      "FileFunction": "SolderMask,Top",
+      "FilePolarity": "Negative"
+    },
+    {
+      "Path": "esp32-racer-B_Mask.gbr",
+      "FileFunction": "SolderMask,Bot",
+      "FilePolarity": "Negative"
+    },
+    {
+      "Path": "esp32-racer-Edge_Cuts.gbr",
+      "FileFunction": "Profile",
+      "FilePolarity": "Positive"
+    }
+  ],
+  "MaterialStackup": [
+    {
+      "Type": "Legend",
+      "Name": "Top Silk Screen"
+    },
+    {
+      "Type": "SolderPaste",
+      "Name": "Top Solder Paste"
+    },
+    {
+      "Type": "SolderMask",
+      "Thickness": 0.01,
+      "Name": "Top Solder Mask"
+    },
+    {
+      "Type": "Copper",
+      "Thickness": 0.035,
+      "Name": "F.Cu"
+    },
+    {
+      "Type": "Dielectric",
+      "Thickness": 0.1,
+      "Material": "FR4",
+      "Name": "F.Cu/In1.Cu",
+      "Notes": "Type: dielectric layer 1 (from F.Cu to In1.Cu)"
+    },
+    {
+      "Type": "Copper",
+      "Thickness": 0.035,
+      "Name": "In1.Cu"
+    },
+    {
+      "Type": "Dielectric",
+      "Thickness": 1.24,
+      "Material": "FR4",
+      "Name": "In1.Cu/In2.Cu",
+      "Notes": "Type: dielectric layer 2 (from In1.Cu to In2.Cu)"
+    },
+    {
+      "Type": "Copper",
+      "Thickness": 0.035,
+      "Name": "In2.Cu"
+    },
+    {
+      "Type": "Dielectric",
+      "Thickness": 0.1,
+      "Material": "FR4",
+      "Name": "In2.Cu/B.Cu",
+      "Notes": "Type: dielectric layer 3 (from In2.Cu to B.Cu)"
+    },
+    {
+      "Type": "Copper",
+      "Thickness": 0.035,
+      "Name": "B.Cu"
+    },
+    {
+      "Type": "SolderMask",
+      "Thickness": 0.01,
+      "Name": "Bottom Solder Mask"
+    },
+    {
+      "Type": "SolderPaste",
+      "Name": "Bottom Solder Paste"
+    },
+    {
+      "Type": "Legend",
+      "Name": "Bottom Silk Screen"
+    }
+  ]
+}

README.md

@@ -7,7 +7,7 @@ this template will auto:
     - create BOM for each project
     - create images of the current pcb for your readme like you can see below
 
-![rendered pcb](res/esp32-racer_render.png)
+![rendered pcb](/res/esp32-racer_render.png)
 
 the code for creating all of this lives in `.hooks/`
 

docs/esp32-racer_erc.rpt

@@ -1,24 +1,10 @@
-ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
+ERC report (2026-04-14T22:31:54, Encoding UTF8)
+Report includes: Errors, Warnings
 
 ***** Sheet /
 [hier_label_mismatch]: Sheet pin POWER_EN has no matching hierarchical label inside the sheet
     ; error
-    @(57.15 mm, 49.53 mm): Hierarchical Sheet Pin POWER_EN
+    @(57.15 mm, 49.53 mm): Hierarchical Sheet Pin 'POWER_EN'
-[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
-    ; error
-    @(143.51 mm, 83.82 mm): Symbol #PWR01 Pin 1 [Power input, Line]
-[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
-    ; error
-    @(143.51 mm, 124.46 mm): Symbol #PWR03 Pin 1 [Power input, Line]
-[duplicate_pins]: Symbol 'LMR33630BDDA' has multiple pins with the same pin number
-    ; error
-    @(82.55 mm, 31.75 mm): Symbol U4 [LMR33630BDDA]
-[duplicate_pins]: Symbol 'LMR33630BDDA' has multiple pins with the same pin number
-    ; error
-    @(191.77 mm, 82.55 mm): Symbol U7 [LMR33630BDDA]
-[label_dangling]: Label not connected to anything
-    ; error
-    @(120.65 mm, 95.25 mm): Label 'boot'
 [no_connect_dangling]: Unconnected "no connection" flag
     ; warning
     @(57.15 mm, 53.34 mm): No Connect
@@ -31,13 +17,19 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
 [lib_symbol_mismatch]: Symbol 'TPS2116DRL' doesn't match copy in library 'Power_Management'
     ; warning
     @(217.17 mm, 27.94 mm): Symbol U8 [TPS2116DRL]
+[unconnected_wire_endpoint]: Unconnected wire endpoint
+    ; warning
+    @(176.53 mm, 134.62 mm): Vertical Wire, length 11.43 mm
+[unconnected_wire_endpoint]: Unconnected wire endpoint
+    ; warning
+    @(191.77 mm, 134.62 mm): Vertical Wire, length 13.97 mm
 [lib_symbol_mismatch]: Symbol 'Battery' doesn't match copy in library 'Device'
     ; warning
     @(25.40 mm, 99.06 mm): Symbol BT1 [Battery]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(73.66 mm, 109.22 mm): Symbol Q17 [DOZ50N03]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(134.62 mm, 109.22 mm): Symbol Q18 [DOZ50N03]
 [lib_symbol_mismatch]: Symbol 'USB_C_Receptacle_USB2.0_14P' doesn't match copy in library 'Connector'
@@ -61,23 +53,26 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
 [lib_symbol_mismatch]: Symbol 'ADC128D818' doesn't match copy in library 'Analog_ADC'
     ; warning
     @(49.53 mm, 165.10 mm): Symbol U13 [ADC128D818]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(129.54 mm, 91.44 mm): Symbol U12 [DRV8701E]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(162.56 mm, 71.12 mm): Symbol Q13 [DOZ50N03]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(162.56 mm, 81.28 mm): Symbol Q14 [DOZ50N03]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(180.34 mm, 86.36 mm): Symbol Q15 [DOZ50N03]
-[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'.
+[lib_symbol_issues]: The symbol library 'esp32-racer-lib' was not found at '/home/zekkos/Documents/ta/461/esp32-racer/hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym'
     ; warning
     @(180.34 mm, 96.52 mm): Symbol Q16 [DOZ50N03]
 
 ***** Sheet /MOTOR_DRIVER2/
+[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
+    ; error
+    @(129.54 mm, 63.50 mm): Symbol U12 Pin 1 [VM, Power input, Line]
 
 ***** Sheet /MCU/
 [pin_not_connected]: Pin not connected
@@ -86,18 +81,18 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
 [pin_not_connected]: Pin not connected
     ; error
     @(100.33 mm, 176.53 mm): Symbol U3 Pin 25 [IO48, Bidirectional, Line]
-[similar_labels]: Labels are similar (lower/upper case difference only)
-    ; warning
-    @(120.65 mm, 95.25 mm): Label 'boot'
-    @(276.86 mm, 85.09 mm): Label 'BOOT'
 
 ***** Sheet /PWR/
 [power_pin_not_driven]: Input Power pin not driven by any Output Power pins
     ; error
-    @(20.32 mm, 22.86 mm): Symbol #PWR046 Pin 1 [Power input, Line]
+    @(72.39 mm, 26.67 mm): Symbol U4 Pin 2 [VIN, Power input, Line]
 [pin_not_connected]: Pin not connected
     ; error
     @(82.55 mm, 48.26 mm): Symbol U4 Hidden pin 9 [GND, Passive, Line]
+[duplicate_pins]: Pin 9 on symbol 'U4' is connected to different nets: GND and Net-(U4-GND-Pad9)
+    ; error
+    @(90.17 mm, 55.88 mm): Symbol U4 Pin 9 [EPAD, Passive, Line]
+    @(82.55 mm, 48.26 mm): Symbol U4 Hidden pin 9 [GND, Passive, Line]
 [pin_to_pin]: Pins of type Output and Output are connected
     ; error
     @(55.88 mm, 106.68 mm): Symbol U5 Pin 8 [PG, Output, Line]
@@ -140,16 +135,20 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
     @(96.52 mm, 165.10 mm): Symbol U6 Pin 5 [VOUT, Output, Line]
 [power_pin_not_driven]: Input Power pin not driven by any Output Power pins
     ; error
-    @(185.42 mm, 44.45 mm): Symbol #PWR093 Pin 1 [Power input, Line]
+    @(207.01 mm, 22.86 mm): Symbol U8 Pin 3 [VIN1, Power input, Line]
 [power_pin_not_driven]: Input Power pin not driven by any Output Power pins
     ; error
-    @(207.01 mm, 22.86 mm): Symbol U8 Pin 3 [VIN1, Power input, Line]
+    @(207.01 mm, 45.72 mm): Symbol U8 Pin 6 [VIN2, Power input, Line]
+[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
+    ; error
+    @(173.99 mm, 123.19 mm): Symbol #PWR089 Pin 1 [Power input, Line]
+[duplicate_pins]: Pin 9 on symbol 'U7' is connected to different nets: Net-(U7-GND-Pad9) and GND
+    ; error
+    @(191.77 mm, 99.06 mm): Symbol U7 Hidden pin 9 [GND, Passive, Line]
+    @(199.39 mm, 106.68 mm): Symbol U7 Pin 9 [EPAD, Passive, Line]
 [pin_not_connected]: Pin not connected
     ; error
     @(191.77 mm, 99.06 mm): Symbol U7 Hidden pin 9 [GND, Passive, Line]
-[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
-    ; error
-    @(191.77 mm, 129.54 mm): Symbol #PWR097 Pin 1 [Power input, Line]
 [hier_label_mismatch]: Hierarchical label POWER_SUPPLIED has no matching sheet pin in the parent sheet
     ; error
     @(236.22 mm, 45.72 mm): Hierarchical Label 'POWER_SUPPLIED'
@@ -171,7 +170,7 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
     @(96.52 mm, 173.99 mm): Symbol R25 Pin 1 [Passive, Line]
 [multiple_net_names]: Both +5V and 5v@2.5A are attached to the same items; +5V will be used in the netlist
     ; warning
-    @(217.17 mm, 146.05 mm): Symbol #PWR0104 Pin 1 [Power input, Line]
+    @(280.67 mm, 19.05 mm): Symbol #PWR0112 Pin 1 [Power input, Line]
     @(236.22 mm, 22.86 mm): Label '5v@2.5A'
 [multiple_net_names]: Both +8V and 8v@3A are attached to the same items; +8V will be used in the netlist
     ; warning
@@ -179,12 +178,15 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
     @(240.03 mm, 85.09 mm): Label '8v@3A'
 [multiple_net_names]: Both +3.3V and 3.3v@1A are attached to the same items; +3.3V will be used in the netlist
     ; warning
-    @(76.20 mm, 139.70 mm): Symbol #PWR062 Pin 1 [Power input, Line]
+    @(276.86 mm, 146.05 mm): Symbol #PWR0110 Pin 1 [Power input, Line]
     @(266.70 mm, 147.32 mm): Label '3.3v@1A'
 
 ***** Sheet /MOTOR_DRIVER1/
 
 ***** Sheet /MOTOR_DRIVER3/
+[power_pin_not_driven]: Input Power pin not driven by any Output Power pins
+    ; error
+    @(129.54 mm, 63.50 mm): Symbol U12 Pin 1 [VM, Power input, Line]
 
 ***** Sheet /MOTOR_DRIVER4/
 
@@ -214,4 +216,10 @@ ERC report (2026-03-10T23:17:43+1300, Encoding UTF8)
     @(252.73 mm, 67.31 mm): Symbol #PWR0213 Pin 1 [Power input, Line]
     @(231.14 mm, 69.85 mm): Label '5V@3A'
 
- ** ERC messages: 58  Errors 29  Warnings 29
+ ** ERC messages: 58  Errors 28  Warnings 30
+
+ ** Ignored checks:
+    - Global label only appears once in the schematic
+    - Four connection points are joined together
+    - SPICE model issue
+    - Assigned footprint doesn't match footprint filters

hardware/esp32-racer-lib/esp32-racer-lib.kicad_sym

@@ -1,7 +1,7 @@
 (kicad_symbol_lib
-	(version 20241209)
+	(version 20251024)
 	(generator "kicad_symbol_editor")
-	(generator_version "9.0")
+	(generator_version "10.0")
 	(symbol "DOZ50N03"
 		(pin_names
 			(offset 0)
@@ -10,8 +10,12 @@
 		(exclude_from_sim no)
 		(in_bom yes)
 		(on_board yes)
+		(in_pos_files yes)
+		(duplicate_pin_numbers_are_jumpers no)
 		(property "Reference" "Q4"
 			(at 6.35 1.2701 0)
+			(show_name no)
+			(do_not_autoplace no)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -21,6 +25,8 @@
 		)
 		(property "Value" "DOZ50N03"
 			(at 6.35 -1.2699 0)
+			(show_name no)
+			(do_not_autoplace no)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -30,74 +36,90 @@
 		)
 		(property "Footprint" "Package_SON:VSON-8_3.3x3.3mm_P0.65mm_NexFET"
 			(at 5.08 2.54 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "Datasheet" "https://www.lcsc.com/datasheet/C36499165.pdf"
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "Description" "C36499165"
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "NOTES" ""
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "Part Number" ""
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "Supplier PN" ""
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "Supplier link" ""
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(property "ki_keywords" "transistor NMOS N-MOS N-MOSFET"
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(symbol "DOZ50N03_0_1"
@@ -268,6 +290,62 @@
 			)
 		)
 		(symbol "DOZ50N03_1_1"
+			(pin passive line
+				(at 2.54 -5.08 90)
+				(length 2.54)
+				(name "D"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 2.54 -5.08 90)
+				(length 2.54)
+				(hide yes)
+				(name "D"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "2"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
+			(pin passive line
+				(at 2.54 -5.08 90)
+				(length 2.54)
+				(hide yes)
+				(name "D"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "3"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
 			(pin input line
 				(at -5.08 0 0)
 				(length 5.08)
@@ -289,62 +367,6 @@
 			(pin passive line
 				(at 2.54 5.08 270)
 				(length 2.54)
-				(name "D"
-					(effects
-						(font
-							(size 1.27 1.27)
-						)
-					)
-				)
-				(number "1"
-					(effects
-						(font
-							(size 1.27 1.27)
-						)
-					)
-				)
-			)
-			(pin passive line
-				(at 2.54 5.08 270)
-				(length 2.54)
-				(hide yes)
-				(name "D"
-					(effects
-						(font
-							(size 1.27 1.27)
-						)
-					)
-				)
-				(number "2"
-					(effects
-						(font
-							(size 1.27 1.27)
-						)
-					)
-				)
-			)
-			(pin passive line
-				(at 2.54 5.08 270)
-				(length 2.54)
-				(hide yes)
-				(name "D"
-					(effects
-						(font
-							(size 1.27 1.27)
-						)
-					)
-				)
-				(number "3"
-					(effects
-						(font
-							(size 1.27 1.27)
-						)
-					)
-				)
-			)
-			(pin passive line
-				(at 2.54 -5.08 90)
-				(length 2.54)
 				(name "S"
 					(effects
 						(font
@@ -367,8 +389,12 @@
 		(exclude_from_sim no)
 		(in_bom yes)
 		(on_board yes)
+		(in_pos_files yes)
+		(duplicate_pin_numbers_are_jumpers no)
 		(property "Reference" "U"
 			(at 13.208 -26.67 0)
+			(show_name no)
+			(do_not_autoplace no)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -377,6 +403,8 @@
 		)
 		(property "Value" "TI DRV8701ERGER"
 			(at -10.922 26.924 0)
+			(show_name no)
+			(do_not_autoplace no)
 			(effects
 				(font
 					(size 1.27 1.27)
@@ -385,31 +413,37 @@
 		)
 		(property "Footprint" "Package_DFN_QFN:VQFN-24-1EP_4x4mm_P0.5mm_EP2.45x2.45mm_ThermalVias"
 			(at 9.144 -28.956 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
 				(justify left)
-				(hide yes)
 			)
 		)
 		(property "Datasheet" "kicad-embed://drv8701.pdf"
 			(at 9.398 -30.734 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
 				(justify left)
-				(hide yes)
 			)
 		)
 		(property "Description" ""
 			(at 0 0 0)
+			(show_name no)
+			(do_not_autoplace no)
+			(hide yes)
 			(effects
 				(font
 					(size 1.27 1.27)
 				)
-				(hide yes)
 			)
 		)
 		(symbol "DRV8701E_1_1"
@@ -424,6 +458,24 @@
 					(type background)
 				)
 			)
+			(pin power_in line
+				(at 0 27.94 270)
+				(length 2.54)
+				(name "VM"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+				(number "1"
+					(effects
+						(font
+							(size 1.27 1.27)
+						)
+					)
+				)
+			)
 			(pin power_out line
 				(at -16.51 22.86 0)
 				(length 2.54)
@@ -478,17 +530,35 @@
 					)
 				)
 			)
-			(pin power_out line
+			(pin power_in line
-				(at -16.51 12.7 0)
+				(at 0 -27.94 90)
 				(length 2.54)
-				(name "DVDD"
+				(name "GND"
 					(effects
 						(font
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hardware/esp32-racer/esp32-racer.kicad_prl

@@ -5,7 +5,7 @@
     "auto_track_width": true,
     "hidden_netclasses": [],
     "hidden_nets": [],
-    "high_contrast_mode": 0,
+    "high_contrast_mode": 1,
     "net_color_mode": 1,
     "opacity": {
       "images": 0.6,
@@ -15,6 +15,7 @@
       "vias": 1.0,
       "zones": 0.6
     },
+    "prototype_zone_fills": false,
     "selection_filter": {
       "dimensions": true,
       "footprints": true,
@@ -49,10 +50,11 @@
       "conflict_shadows",
       "shapes"
     ],
-    "visible_layers": "ffffffff_ffffffff_ffffffff_ffffffff",
+    "visible_layers": "ffffffff_ffffffff_fffffdf5_ffffffff",
     "zone_display_mode": 0
   },
   "git": {
+    "integration_disabled": false,
     "repo_type": "",
     "repo_username": "",
     "ssh_key": ""
@@ -72,6 +74,8 @@
       false,
       false,
       false,
+      false,
+      false,
       false
     ],
     "col_order": [
@@ -84,19 +88,23 @@
       6,
       7,
       8,
-      9
+      9,
+      10,
+      11
     ],
     "col_widths": [
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+      67,
-      0,
+      66,
-      0,
+      91,
-      0,
+      73,
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+      80,
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+      94,
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+      83,
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+      78,
-      0,
+      40,
-      0
+      43,
+      55,
+      1260
     ],
     "custom_group_rules": [],
     "expanded_rows": [],
@@ -105,6 +113,7 @@
     "filter_text": "",
     "group_by_constraint": false,
     "group_by_netclass": false,
+    "show_time_domain_details": false,
     "show_unconnected_nets": false,
     "show_zero_pad_nets": false,
     "sort_ascending": true,
@@ -115,6 +124,7 @@
     "files": []
   },
   "schematic": {
+    "hierarchy_collapsed": [],
     "selection_filter": {
       "graphics": true,
       "images": true,
@@ -122,6 +132,7 @@
       "lockedItems": false,
       "otherItems": true,
       "pins": true,
+      "ruleAreas": true,
       "symbols": true,
       "text": true,
       "wires": true

hardware/esp32-racer/esp32-racer.kicad_pro

@@ -2,25 +2,263 @@
   "board": {
     "3dviewports": [],
     "design_settings": {
-      "defaults": {},
+      "defaults": {
-      "diff_pair_dimensions": [],
+        "apply_defaults_to_fp_barcodes": false,
-      "drc_exclusions": [],
+        "apply_defaults_to_fp_dimensions": false,
-      "rules": {},
+        "apply_defaults_to_fp_fields": false,
-      "track_widths": [],
+        "apply_defaults_to_fp_shapes": false,
-      "via_dimensions": []
+        "apply_defaults_to_fp_text": false,
+        "board_outline_line_width": 0.05,
+        "copper_line_width": 0.2,
+        "copper_text_italic": false,
+        "copper_text_size_h": 1.5,
+        "copper_text_size_v": 1.5,
+        "copper_text_thickness": 0.3,
+        "copper_text_upright": false,
+        "courtyard_line_width": 0.05,
+        "dimension_precision": 4,
+        "dimension_units": 3,
+        "dimensions": {
+          "arrow_length": 1270000,
+          "extension_offset": 500000,
+          "keep_text_aligned": true,
+          "suppress_zeroes": true,
+          "text_position": 0,
+          "units_format": 0
+        },
+        "fab_line_width": 0.1,
+        "fab_text_italic": false,
+        "fab_text_size_h": 1.0,
+        "fab_text_size_v": 1.0,
+        "fab_text_thickness": 0.15,
+        "fab_text_upright": false,
+        "other_line_width": 0.1,
+        "other_text_italic": false,
+        "other_text_size_h": 1.0,
+        "other_text_size_v": 1.0,
+        "other_text_thickness": 0.15,
+        "other_text_upright": false,
+        "pads": {
+          "drill": 0.0,
+          "height": 0.95,
+          "width": 0.8
+        },
+        "silk_line_width": 0.1,
+        "silk_text_italic": false,
+        "silk_text_size_h": 1.0,
+        "silk_text_size_v": 1.0,
+        "silk_text_thickness": 0.1,
+        "silk_text_upright": false,
+        "zones": {
+          "min_clearance": 0.5
+        }
+      },
+      "diff_pair_dimensions": [
+        {
+          "gap": 0.0,
+          "via_gap": 0.0,
+          "width": 0.0
+        }
+      ],
+      "drc_exclusions": [
+        [
+          "courtyards_overlap|39255000|68870000|e06bdfe1-53ae-4fc2-b728-570ca465444f|e2dcf49c-eee1-4d66-a3a4-d1ffe470ec14",
+          "no they dont"
+        ]
+      ],
+      "meta": {
+        "version": 2
+      },
+      "rule_severities": {
+        "annular_width": "error",
+        "clearance": "error",
+        "connection_width": "warning",
+        "copper_edge_clearance": "error",
+        "copper_sliver": "warning",
+        "courtyards_overlap": "error",
+        "creepage": "error",
+        "diff_pair_gap_out_of_range": "error",
+        "diff_pair_uncoupled_length_too_long": "error",
+        "drill_out_of_range": "error",
+        "duplicate_footprints": "warning",
+        "extra_footprint": "warning",
+        "footprint": "error",
+        "footprint_filters_mismatch": "ignore",
+        "footprint_symbol_field_mismatch": "warning",
+        "footprint_symbol_mismatch": "warning",
+        "footprint_type_mismatch": "ignore",
+        "hole_clearance": "error",
+        "hole_to_hole": "warning",
+        "holes_co_located": "warning",
+        "invalid_outline": "error",
+        "isolated_copper": "warning",
+        "item_on_disabled_layer": "error",
+        "items_not_allowed": "error",
+        "length_out_of_range": "error",
+        "lib_footprint_issues": "warning",
+        "lib_footprint_mismatch": "warning",
+        "malformed_courtyard": "error",
+        "microvia_drill_out_of_range": "error",
+        "mirrored_text_on_front_layer": "warning",
+        "missing_courtyard": "ignore",
+        "missing_footprint": "warning",
+        "missing_tuning_profile": "warning",
+        "net_conflict": "warning",
+        "nonmirrored_text_on_back_layer": "warning",
+        "npth_inside_courtyard": "ignore",
+        "padstack": "warning",
+        "pth_inside_courtyard": "ignore",
+        "shorting_items": "error",
+        "silk_edge_clearance": "warning",
+        "silk_over_copper": "warning",
+        "silk_overlap": "warning",
+        "skew_out_of_range": "error",
+        "solder_mask_bridge": "error",
+        "starved_thermal": "error",
+        "text_height": "warning",
+        "text_on_edge_cuts": "error",
+        "text_thickness": "warning",
+        "through_hole_pad_without_hole": "error",
+        "too_many_vias": "error",
+        "track_angle": "error",
+        "track_dangling": "warning",
+        "track_not_centered_on_via": "ignore",
+        "track_on_post_machined_layer": "error",
+        "track_segment_length": "error",
+        "track_width": "error",
+        "tracks_crossing": "error",
+        "tuning_profile_track_geometries": "ignore",
+        "unconnected_items": "error",
+        "unresolved_variable": "error",
+        "via_dangling": "warning",
+        "zones_intersect": "error"
+      },
+      "rules": {
+        "max_error": 0.005,
+        "min_clearance": 0.0,
+        "min_connection": 0.0,
+        "min_copper_edge_clearance": 0.5,
+        "min_groove_width": 0.0,
+        "min_hole_clearance": 0.25,
+        "min_hole_to_hole": 0.25,
+        "min_microvia_diameter": 0.2,
+        "min_microvia_drill": 0.1,
+        "min_resolved_spokes": 2,
+        "min_silk_clearance": 0.0,
+        "min_text_height": 0.8,
+        "min_text_thickness": 0.08,
+        "min_through_hole_diameter": 0.3,
+        "min_track_width": 0.0,
+        "min_via_annular_width": 0.1,
+        "min_via_diameter": 0.5,
+        "solder_mask_to_copper_clearance": 0.0,
+        "use_height_for_length_calcs": true
+      },
+      "teardrop_options": [
+        {
+          "td_onpthpad": true,
+          "td_onroundshapesonly": false,
+          "td_onsmdpad": true,
+          "td_ontrackend": false,
+          "td_onvia": true
+        }
+      ],
+      "teardrop_parameters": [
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_round_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_rect_shape",
+          "td_width_to_size_filter_ratio": 0.9
+        },
+        {
+          "td_allow_use_two_tracks": true,
+          "td_curve_segcount": 0,
+          "td_height_ratio": 1.0,
+          "td_length_ratio": 0.5,
+          "td_maxheight": 2.0,
+          "td_maxlen": 1.0,
+          "td_on_pad_in_zone": false,
+          "td_target_name": "td_track_end",
+          "td_width_to_size_filter_ratio": 0.9
+        }
+      ],
+      "track_widths": [
+        0.0,
+        1.0
+      ],
+      "tuning_pattern_settings": {
+        "diff_pair_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 1.0
+        },
+        "diff_pair_skew_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        },
+        "single_track_defaults": {
+          "corner_radius_percentage": 80,
+          "corner_style": 1,
+          "max_amplitude": 1.0,
+          "min_amplitude": 0.2,
+          "single_sided": false,
+          "spacing": 0.6
+        }
+      },
+      "via_dimensions": [
+        {
+          "diameter": 0.0,
+          "drill": 0.0
+        }
+      ],
+      "zones_allow_external_fillets": false
     },
     "ipc2581": {
+      "bom_rev": "",
       "dist": "",
       "distpn": "",
       "internal_id": "",
       "mfg": "",
-      "mpn": ""
+      "mpn": "",
+      "sch_revision": ""
     },
     "layer_pairs": [],
     "layer_presets": [],
     "viewports": []
   },
   "boards": [],
+  "component_class_settings": {
+    "assignments": [],
+    "meta": {
+      "version": 0
+    },
+    "sheet_component_classes": {
+      "enabled": false
+    }
+  },
   "cvpcb": {
     "equivalence_files": []
   },
@@ -210,11 +448,14 @@
       "duplicate_sheet_names": "error",
       "endpoint_off_grid": "warning",
       "extra_units": "error",
+      "field_name_whitespace": "warning",
       "footprint_filter": "ignore",
       "footprint_link_issues": "warning",
       "four_way_junction": "ignore",
       "global_label_dangling": "warning",
+      "ground_pin_not_ground": "warning",
       "hier_label_mismatch": "error",
+      "isolated_pin_label": "warning",
       "label_dangling": "error",
       "label_multiple_wires": "warning",
       "lib_symbol_issues": "warning",
@@ -237,6 +478,7 @@
       "similar_power": "warning",
       "simulation_model_issue": "ignore",
       "single_global_label": "ignore",
+      "stacked_pin_name": "warning",
       "unannotated": "error",
       "unconnected_wire_endpoint": "warning",
       "undefined_netclass": "error",
@@ -269,13 +511,14 @@
         "priority": 2147483647,
         "schematic_color": "rgba(0, 0, 0, 0.000)",
         "track_width": 0.2,
+        "tuning_profile": "",
         "via_diameter": 0.6,
         "via_drill": 0.3,
         "wire_width": 6
       }
     ],
     "meta": {
-      "version": 4
+      "version": 5
     },
     "net_colors": null,
     "netclass_assignments": null,
@@ -286,7 +529,7 @@
       "gencad": "",
       "idf": "",
       "netlist": "",
-      "plot": "",
+      "plot": "../../PCBs/",
       "pos_files": "",
       "specctra_dsn": "",
       "step": "",
@@ -297,6 +540,10 @@
   },
   "schematic": {
     "annotate_start_num": 0,
+    "annotation": {
+      "method": 0,
+      "sort_order": 0
+    },
     "bom_export_filename": "${PROJECTNAME}.csv",
     "bom_fmt_presets": [],
     "bom_fmt_settings": {
@@ -452,6 +699,7 @@
       "sort_asc": true,
       "sort_field": "Reference"
     },
+    "bus_aliases": {},
     "connection_grid_size": 50.0,
     "drawing": {
       "dashed_lines_dash_length_ratio": 12.0,
@@ -480,6 +728,7 @@
           "visible": false
         }
       ],
+      "hop_over_size_choice": 0,
       "intersheets_ref_own_page": false,
       "intersheets_ref_prefix": "",
       "intersheets_ref_short": false,
@@ -503,6 +752,7 @@
     "net_format_name": "",
     "page_layout_descr_file": "",
     "plot_directory": "",
+    "reuse_designators": true,
     "space_save_all_events": true,
     "spice_current_sheet_as_root": false,
     "spice_external_command": "spice \"%I\"",
@@ -511,12 +761,21 @@
     "spice_save_all_dissipations": false,
     "spice_save_all_voltages": false,
     "subpart_first_id": 65,
-    "subpart_id_separator": 0
+    "subpart_id_separator": 0,
+    "top_level_sheets": [
+      {
+        "filename": "esp32-racer.kicad_sch",
+        "name": "esp32-racer",
+        "uuid": "1d580319-54a9-438f-a4a3-ea2f61f357b8"
+      }
+    ],
+    "used_designators": "R65,TP1-2",
+    "variants": []
   },
   "sheets": [
     [
       "1d580319-54a9-438f-a4a3-ea2f61f357b8",
-      "Root"
+      "esp32-racer"
     ],
     [
       "2494d45e-acf4-40f6-9a55-62c15b4ed8bc",
@@ -555,5 +814,11 @@
       "POWER_CONNECTORS"
     ]
   ],
-  "text_variables": {}
+  "text_variables": {},
+  "tuning_profiles": {
+    "meta": {
+      "version": 0
+    },
+    "tuning_profiles_impedance_geometric": []
+  }
 }

hardware/esp32-racer/pins.txt

@@ -0,0 +1,29 @@
+IO0 boot
+IO1 PWR_SWITCH_EN
+IO2 PWR_SWITCH_PG
+IO3 x
+IO4 SERVO_1
+IO5 SERVO_2
+IO6 SERVO_3
+IO7 SERVO_4
+IO8 OUTBOUND_COMS_EN
+IO9 PHASE_3
+IO10 ENABLE_3
+IO11 PHASE_4
+IO12 ENABLE_4
+IO13 PHASE_1
+IO14 ENABLE_1
+IO15 SDA
+IO16 SCL
+IO17 UART_TX
+IO18 UART_RX
+IO19 D-
+IO20 D+
+IO21 PHASE_2
+IO38 LED_DATA
+IO43 PROG_UART_TX
+IO44 PROG_UART_RX
+IO45 ENABLE_2
+IO46 SERVO_EN
+IO47 UNUSED
+IO48 UNUSED

software/blink/CMakeLists.txt

@@ -0,0 +1,8 @@
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.22)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
+idf_build_set_property(MINIMAL_BUILD ON)
+project(blink)

software/blink/README.md

@@ -0,0 +1,69 @@
+| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-H21 | ESP32-H4 | ESP32-P4 | ESP32-S2 | ESP32-S3 | ESP32-S31 |
+| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | --------- | -------- | -------- | -------- | -------- | --------- |
+
+# Blink Example
+
+(See the README.md file in the upper level 'examples' directory for more information about examples.)
+
+This example demonstrates how to blink a LED by using the GPIO driver or using the [led_strip](https://components.espressif.com/component/espressif/led_strip) library if the LED is addressable e.g. [WS2812](https://cdn-shop.adafruit.com/datasheets/WS2812B.pdf). The `led_strip` library is installed via [component manager](main/idf_component.yml).
+
+## How to Use Example
+
+Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`.
+
+### Hardware Required
+
+* A development board with normal LED or addressable LED on-board (e.g., ESP32-S3-DevKitC, ESP32-C6-DevKitC etc.)
+* A USB cable for Power supply and programming
+
+See [Development Boards](https://www.espressif.com/en/products/devkits) for more information about it.
+
+### Configure the Project
+
+Open the project configuration menu (`idf.py menuconfig`).
+
+In the `Example Configuration` menu:
+
+* Select the LED type in the `Blink LED type` option.
+  * Use `GPIO` for regular LED
+  * Use `LED strip` for addressable LED
+* If the LED type is `LED strip`, select the backend peripheral
+  * `RMT` is only available for ESP targets with RMT peripheral supported
+  * `SPI` is available for all ESP targets
+* Set the GPIO number used for the signal in the `Blink GPIO number` option.
+* Set the blinking period in the `Blink period in ms` option.
+
+### Build and Flash
+
+Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
+
+(To exit the serial monitor, type ``Ctrl-]``.)
+
+See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
+
+## Example Output
+
+As you run the example, you will see the LED blinking, according to the previously defined period. For the addressable LED, you can also change the LED color by setting the `led_strip_set_pixel(led_strip, 0, 16, 16, 16);` (LED Strip, Pixel Number, Red, Green, Blue) with values from 0 to 255 in the [source file](main/blink_example_main.c).
+
+```text
+I (315) example: Example configured to blink addressable LED!
+I (325) example: Turning the LED OFF!
+I (1325) example: Turning the LED ON!
+I (2325) example: Turning the LED OFF!
+I (3325) example: Turning the LED ON!
+I (4325) example: Turning the LED OFF!
+I (5325) example: Turning the LED ON!
+I (6325) example: Turning the LED OFF!
+I (7325) example: Turning the LED ON!
+I (8325) example: Turning the LED OFF!
+```
+
+Note: The color order could be different according to the LED model.
+
+The pixel number indicates the pixel position in the LED strip. For a single LED, use 0.
+
+## Troubleshooting
+
+* If the LED isn't blinking, check the GPIO or the LED type selection in the `Example Configuration` menu.
+
+For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.

software/blink/dependencies.lock

@@ -0,0 +1,20 @@
+dependencies:
+  espressif/led_strip:
+    component_hash: 28621486f77229aaf81c71f5e15d6fbf36c2949cf11094e07090593e659e7639
+    dependencies:
+    - name: idf
+      require: private
+      version: '>=5.0'
+    source:
+      registry_url: https://components.espressif.com/
+      type: service
+    version: 3.0.3
+  idf:
+    source:
+      type: idf
+    version: 6.1.0
+direct_dependencies:
+- espressif/led_strip
+manifest_hash: cdcc77aff1f56b906c61e51c8f438577513c8d92aa9dfd7bf655f126d2b2d320
+target: esp32s3
+version: 3.0.0

software/blink/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "blink_example_main.c"
+                       INCLUDE_DIRS ".")

software/blink/main/Kconfig.projbuild

@@ -0,0 +1,49 @@
+menu "Example Configuration"
+
+    orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"
+
+    choice BLINK_LED
+        prompt "Blink LED type"
+        default BLINK_LED_GPIO
+        help
+            Select the LED type. A normal level controlled LED or an addressable LED strip.
+            The default selection is based on the Espressif DevKit boards.
+            You can change the default selection according to your board.
+
+        config BLINK_LED_GPIO
+            bool "GPIO"
+        config BLINK_LED_STRIP
+            bool "LED strip"
+    endchoice
+
+    choice BLINK_LED_STRIP_BACKEND
+        depends on BLINK_LED_STRIP
+        prompt "LED strip backend peripheral"
+        default BLINK_LED_STRIP_BACKEND_RMT if SOC_RMT_SUPPORTED
+        default BLINK_LED_STRIP_BACKEND_SPI
+        help
+            Select the backend peripheral to drive the LED strip.
+
+        config BLINK_LED_STRIP_BACKEND_RMT
+            depends on SOC_RMT_SUPPORTED
+            bool "RMT"
+        config BLINK_LED_STRIP_BACKEND_SPI
+            bool "SPI"
+    endchoice
+
+    config BLINK_GPIO
+        int "Blink GPIO number"
+        range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
+        default 8
+        help
+            GPIO number (IOxx) to blink on and off the LED.
+            Some GPIOs are used for other purposes (flash connections, etc.) and cannot be used to blink.
+
+    config BLINK_PERIOD
+        int "Blink period in ms"
+        range 10 3600000
+        default 1000
+        help
+            Define the blinking period in milliseconds.
+
+endmenu

software/blink/main/blink_example_main.c

@@ -0,0 +1,108 @@
+/* Blink Example
+
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+#include <stdio.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+#include "led_strip.h"
+#include "sdkconfig.h"
+
+static const char *TAG = "example";
+
+/* Use project configuration menu (idf.py menuconfig) to choose the GPIO to blink,
+   or you can edit the following line and set a number here.
+*/
+#define BLINK_GPIO 38
+
+static uint8_t s_led_state = 0;
+
+#ifdef CONFIG_BLINK_LED_STRIP
+
+static led_strip_handle_t led_strip;
+
+static void blink_led(void)
+{
+    /* If the addressable LED is enabled */
+    if (s_led_state) {
+        /* Set the LED pixel using RGB from 0 (0%) to 255 (100%) for each color */
+        led_strip_set_pixel(led_strip, 0, 255, 0, 0);
+        led_strip_set_pixel(led_strip, 1, 255, 128, 0);
+        led_strip_set_pixel(led_strip, 2, 255, 255, 0);
+        led_strip_set_pixel(led_strip, 3, 0, 255, 0);
+        led_strip_set_pixel(led_strip, 4, 0, 0, 255);
+        /* Refresh the strip to send data */
+        led_strip_refresh(led_strip);
+    } else {
+        /* Set all LED off to clear all pixels */
+        led_strip_clear(led_strip);
+    }
+}
+
+static void configure_led(void)
+{
+    ESP_LOGI(TAG, "Example configured to blink addressable LED!");
+    /* LED strip initialization with the GPIO and pixels number*/
+    led_strip_config_t strip_config = {
+        .strip_gpio_num = BLINK_GPIO,
+        .max_leds = 5, // at least one LED on board
+    };
+#if CONFIG_BLINK_LED_STRIP_BACKEND_RMT
+    led_strip_rmt_config_t rmt_config = {
+        .resolution_hz = 10 * 1000 * 1000, // 10MHz
+        .flags.with_dma = false,
+    };
+    ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
+#elif CONFIG_BLINK_LED_STRIP_BACKEND_SPI
+    led_strip_spi_config_t spi_config = {
+        .spi_bus = SPI2_HOST,
+        .flags.with_dma = true,
+    };
+    ESP_ERROR_CHECK(led_strip_new_spi_device(&strip_config, &spi_config, &led_strip));
+#else
+#error "unsupported LED strip backend"
+#endif
+    /* Set all LED off to clear all pixels */
+    led_strip_clear(led_strip);
+}
+
+#elif CONFIG_BLINK_LED_GPIO
+
+static void blink_led(void)
+{
+    /* Set the GPIO level according to the state (LOW or HIGH)*/
+    gpio_set_level(BLINK_GPIO, s_led_state);
+}
+
+static void configure_led(void)
+{
+    ESP_LOGI(TAG, "Example configured to blink GPIO LED!");
+    gpio_reset_pin(BLINK_GPIO);
+    /* Set the GPIO as a push/pull output */
+    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
+}
+
+#else
+#error "unsupported LED type"
+#endif
+
+void app_main(void)
+{
+
+    /* Configure the peripheral according to the LED type */
+    configure_led();
+
+    while (1) {
+        ESP_LOGI(TAG, "Turning the LED %s!", s_led_state == true ? "ON" : "OFF");
+        blink_led();
+        /* Toggle the LED state */
+        s_led_state = !s_led_state;
+        vTaskDelay(CONFIG_BLINK_PERIOD / portTICK_PERIOD_MS);
+    }
+}

software/blink/main/idf_component.yml

@@ -0,0 +1,2 @@
+dependencies:
+  espressif/led_strip: "^3.0.0"

software/blink/managed_components/espressif__led_strip/.component_hash

@@ -0,0 +1 @@
+28621486f77229aaf81c71f5e15d6fbf36c2949cf11094e07090593e659e7639

software/blink/managed_components/espressif__led_strip/CHANGELOG.md

@@ -0,0 +1,67 @@
+## 3.0.3
+
+- Support WS2816 with 16-bit color
+
+## 3.0.1
+
+- Support WS2811 bit timing
+
+## 3.0.0
+
+- Discontinued support for ESP-IDF v4.x
+- Added configuration for user-defined color component format
+
+## 2.5.5
+
+- Simplified the led_strip component dependency, the time of full build with ESP-IDF v5.3 can now be shorter.
+
+## 2.5.4
+
+- Inserted extra delay when initialize the SPI LED device, to ensure all LEDs are in the reset state correctly
+
+## 2.5.3
+
+- Extend reset time (280us) to support WS2812B-V5
+
+## 2.5.2
+
+- Added API reference doc (api.md)
+
+## 2.5.0
+
+- Enabled support for IDF4.4 and above
+  - with RMT backend only
+- Added API `led_strip_set_pixel_hsv`
+
+## 2.4.0
+
+- Support configurable SPI mode to control leds
+  - recommend enabling DMA when using SPI mode
+
+## 2.3.0
+
+- Support configurable RMT channel size by setting `mem_block_symbols`
+
+## 2.2.0
+
+- Support for 4 components RGBW leds (SK6812):
+  - in led_strip_config_t new fields
+      led_pixel_format, controlling byte format (LED_PIXEL_FORMAT_GRB, LED_PIXEL_FORMAT_GRBW)
+      led_model, used to configure bit timing (LED_MODEL_WS2812, LED_MODEL_SK6812)
+  - new API led_strip_set_pixel_rgbw
+  - new interface type set_pixel_rgbw
+
+## 2.1.0
+
+- Support DMA feature, which offloads the CPU by a lot when it comes to drive a bunch of LEDs
+- Support various RMT clock sources
+- Acquire and release the power management lock before and after each refresh
+- New driver flag: `invert_out` which can invert the led control signal by hardware
+
+## 2.0.0
+
+- Reimplemented the driver using the new RMT driver (`driver/rmt_tx.h`)
+
+## 1.0.0
+
+- Initial driver version, based on the legacy RMT driver (`driver/rmt.h`)

software/blink/managed_components/espressif__led_strip/CHECKSUMS.json

@@ -0,0 +1 @@
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software/blink/managed_components/espressif__led_strip/CMakeLists.txt

@@ -0,0 +1,26 @@
+include($ENV{IDF_PATH}/tools/cmake/version.cmake)
+
+set(srcs "src/led_strip_api.c")
+set(public_requires)
+
+if(CONFIG_SOC_RMT_SUPPORTED)
+    list(APPEND srcs "src/led_strip_rmt_dev.c" "src/led_strip_rmt_encoder.c")
+endif()
+
+# the SPI backend driver relies on some feature that was available in IDF 5.1
+if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER_EQUAL "5.1")
+    if(CONFIG_SOC_GPSPI_SUPPORTED)
+        list(APPEND srcs "src/led_strip_spi_dev.c")
+    endif()
+endif()
+
+# Starting from esp-idf v5.3, the RMT and SPI drivers are moved to separate components
+if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER_EQUAL "5.3")
+    list(APPEND public_requires "esp_driver_rmt" "esp_driver_spi")
+else()
+    list(APPEND public_requires "driver")
+endif()
+
+idf_component_register(SRCS ${srcs}
+                       INCLUDE_DIRS "include" "interface"
+                       REQUIRES ${public_requires})

software/blink/managed_components/espressif__led_strip/LICENSE

@@ -0,0 +1,202 @@
+
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software/blink/managed_components/espressif__led_strip/README.md

@@ -0,0 +1,23 @@
+# LED Strip Driver
+
+[![Component Registry](https://components.espressif.com/components/espressif/led_strip/badge.svg)](https://components.espressif.com/components/espressif/led_strip)
+
+This driver is designed for addressable LEDs like [WS2812](http://www.world-semi.com/Certifications/WS2812B.html), where each LED is controlled by a single data line.
+
+## Supported Backend Peripherals
+
+The LED strip driver supports two different backend peripherals to generate the timing signals required by addressable LEDs:
+
+### The [RMT](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/rmt.html) Peripheral
+
+This is the most economical way to drive the LEDs because it only consumes one RMT channel, leaving other channels free to use. However, the memory usage increases dramatically with the number of LEDs. If the RMT hardware can't be assist by DMA, the driver will going into interrupt very frequently, thus result in a high CPU usage. What's worse, if the RMT interrupt is delayed or not serviced in time (e.g. if Wi-Fi interrupt happens on the same CPU core), the RMT transaction will be corrupted and the LEDs will display incorrect colors. If you want to use RMT to drive a large number of LEDs, you'd better to enable the DMA feature if possible [^1].
+
+### The [SPI](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/spi_master.html) Peripheral
+
+SPI peripheral can also be used to generate the timing required by the LED strip, in a so-called "Clock-less" mode. However this backend is not as economical as the RMT one, because it will take up the whole **bus**. You **CANNOT** connect other devices to the same SPI bus if it's been used by the led_strip, because the led_strip doesn't have the concept of "Chip Select".
+
+## Documentation
+
+For detailed information about the LED Strip component, including API reference and user guides, please visit:
+
+-   **Programming Guide & API Reference**: [LED Strip Documentation](https://espressif.github.io/idf-extra-components/latest/led_strip/index.html)

software/blink/managed_components/espressif__led_strip/docs/Doxyfile

@@ -0,0 +1,30 @@
+# Set this to the header file you want
+INPUT = \
+    ../include/ \
+    ../interface/
+
+# The output directory for the generated XML documentation
+OUTPUT_DIRECTORY = doxygen_output
+
+# Warning-related settings, it's recommended to keep them enabled
+WARN_IF_UNDOC_ENUM_VAL = YES
+WARN_AS_ERROR = YES
+
+# Other common settings
+FULL_PATH_NAMES = YES
+STRIP_FROM_PATH = ../
+STRIP_FROM_INC_PATH = ../
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = YES
+OPTIMIZE_OUTPUT_FOR_C  = YES
+EXPAND_ONLY_PREDEF     = YES
+EXTRACT_ALL            = YES
+PREDEFINED             = $(ENV_DOXYGEN_DEFINES)
+HAVE_DOT = NO
+GENERATE_XML    = YES
+XML_OUTPUT      = xml
+GENERATE_HTML   = NO
+HAVE_DOT        = NO
+GENERATE_LATEX  = NO
+QUIET = YES
+MARKDOWN_SUPPORT = YES

software/blink/managed_components/espressif__led_strip/docs/book.toml

@@ -0,0 +1,8 @@
+[book]
+title = "LED Strip Documentation"
+language = "en"
+
+[output.html]
+default-theme = "light"
+git-repository-url = "https://github.com/espressif/idf-extra-components/tree/master/led_strip"
+edit-url-template = "https://github.com/espressif/idf-extra-components/edit/master/led_strip/docs/{path}"

software/blink/managed_components/espressif__led_strip/docs/src/SUMMARY.md

@@ -0,0 +1,13 @@
+# Summary
+
+---
+
+# Programming Guide
+
+- [LED Strip](index.md)
+
+---
+
+# API Reference
+
+- [API Reference](api.md)

software/blink/managed_components/espressif__led_strip/docs/src/api.md

@@ -0,0 +1,9 @@
+# API Reference
+
+<div class="warning">
+
+This file is automatically generated by esp-doxybook.
+
+DO NOT edit it manually.
+
+</div>

software/blink/managed_components/espressif__led_strip/docs/src/index.md

@@ -0,0 +1,75 @@
+# LED Strip Programming Guide
+
+## Allocate LED Strip Object with RMT Backend
+
+```c
+#define BLINK_GPIO 0
+
+/// LED strip common configuration
+led_strip_config_t strip_config = {
+    .strip_gpio_num = BLINK_GPIO,  // The GPIO that connected to the LED strip's data line
+    .max_leds = 1,                 // The number of LEDs in the strip,
+    .led_model = LED_MODEL_WS2812, // LED strip model, it determines the bit timing
+    .color_component_format = LED_STRIP_COLOR_COMPONENT_FMT_GRB, // The color component format is G-R-B
+    .flags = {
+        .invert_out = false, // don't invert the output signal
+    }
+};
+
+/// RMT backend specific configuration
+led_strip_rmt_config_t rmt_config = {
+    .clk_src = RMT_CLK_SRC_DEFAULT,    // different clock source can lead to different power consumption
+    .resolution_hz = 10 * 1000 * 1000, // RMT counter clock frequency: 10MHz
+    .mem_block_symbols = 64,           // the memory size of each RMT channel, in words (4 bytes)
+    .flags = {
+        .with_dma = false, // DMA feature is available on chips like ESP32-S3/P4
+    }
+};
+
+/// Create the LED strip object
+led_strip_handle_t led_strip = NULL;
+ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
+```
+
+---
+
+You can create multiple LED strip objects with different GPIOs and pixel numbers. The backend driver will automatically allocate sufficient RMT channels for you wherever possible. If the RMT channels are not enough, the [led_strip_new_rmt_device](api.md#function-led_strip_new_rmt_device) will return an error.
+
+## Allocate LED Strip Object with SPI Backend
+
+```c
+#define BLINK_GPIO 0
+
+/// LED strip common configuration
+led_strip_config_t strip_config = {
+    .strip_gpio_num = BLINK_GPIO,  // The GPIO that connected to the LED strip's data line
+    .max_leds = 1,                 // The number of LEDs in the strip,
+    .led_model = LED_MODEL_WS2812, // LED strip model, it determines the bit timing
+    .color_component_format = LED_STRIP_COLOR_COMPONENT_FMT_GRB, // The color component format is G-R-B
+    .flags = {
+        .invert_out = false, // don't invert the output signal
+    }
+};
+
+/// SPI backend specific configuration
+led_strip_spi_config_t spi_config = {
+    .clk_src = SPI_CLK_SRC_DEFAULT, // different clock source can lead to different power consumption
+    .spi_bus = SPI2_HOST,           // SPI bus ID
+    .flags = {
+        .with_dma = true, // Using DMA can improve performance and help drive more LEDs
+    }
+};
+
+/// Create the LED strip object
+led_strip_handle_t led_strip = NULL;
+ESP_ERROR_CHECK(led_strip_new_spi_device(&strip_config, &spi_config, &led_strip));
+```
+
+---
+
+The number of LED strip objects can be created depends on how many free SPI controllers are free to use in your project.
+
+## FAQ
+
+-   How to set the brightness of the LED strip?
+    -   You can tune the brightness by scaling the value of each R-G-B element with a **same** factor. But pay attention to the overflow of the value.

software/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.16)
+
+set(COMPONENTS main)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(led_strip_rmt_ws2812)

software/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/README.md

@@ -0,0 +1,31 @@
+# LED Strip Example (RMT backend + WS2812)
+
+This example demonstrates how to blink the WS2812 LED using the [led_strip](https://components.espressif.com/component/espressif/led_strip) component.
+
+## How to Use Example
+
+### Hardware Required
+
+* A development board with Espressif SoC
+* A USB cable for Power supply and programming
+* WS2812 LED strip
+
+### Configure the Example
+
+Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. Then assign the proper GPIO in the [source file](main/led_strip_rmt_ws2812_main.c). If your led strip has multiple LEDs, don't forget update the number.
+
+### Build and Flash
+
+Run `idf.py -p PORT build flash monitor` to build, flash and monitor the project.
+
+(To exit the serial monitor, type ``Ctrl-]``.)
+
+See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
+
+## Example Output
+
+```text
+I (299) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (309) example: Created LED strip object with RMT backend
+I (309) example: Start blinking LED strip
+```

software/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "led_strip_rmt_ws2812_main.c"
+                       INCLUDE_DIRS ".")

software/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/main/idf_component.yml

@@ -0,0 +1,3 @@
+dependencies:
+  espressif/led_strip:
+    version: ^3

software/blink/managed_components/espressif__led_strip/examples/led_strip_rmt_ws2812/main/led_strip_rmt_ws2812_main.c

@@ -0,0 +1,89 @@
+/*
+ * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+#include <stdio.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "led_strip.h"
+#include "esp_log.h"
+#include "esp_err.h"
+
+// Set to 1 to use DMA for driving the LED strip, 0 otherwise
+// Please note the RMT DMA feature is only available on chips e.g. ESP32-S3/P4
+#define LED_STRIP_USE_DMA  0
+
+#if LED_STRIP_USE_DMA
+// Numbers of the LED in the strip
+#define LED_STRIP_LED_COUNT 256
+#define LED_STRIP_MEMORY_BLOCK_WORDS 1024 // this determines the DMA block size
+#else
+// Numbers of the LED in the strip
+#define LED_STRIP_LED_COUNT 24
+#define LED_STRIP_MEMORY_BLOCK_WORDS 0 // let the driver choose a proper memory block size automatically
+#endif // LED_STRIP_USE_DMA
+
+// GPIO assignment
+#define LED_STRIP_GPIO_PIN  2
+
+// 10MHz resolution, 1 tick = 0.1us (led strip needs a high resolution)
+#define LED_STRIP_RMT_RES_HZ  (10 * 1000 * 1000)
+
+static const char *TAG = "example";
+
+led_strip_handle_t configure_led(void)
+{
+    // LED strip general initialization, according to your led board design
+    led_strip_config_t strip_config = {
+        .strip_gpio_num = LED_STRIP_GPIO_PIN, // The GPIO that connected to the LED strip's data line
+        .max_leds = LED_STRIP_LED_COUNT,      // The number of LEDs in the strip,
+        .led_model = LED_MODEL_WS2812,        // LED strip model
+        .color_component_format = LED_STRIP_COLOR_COMPONENT_FMT_GRB, // The color order of the strip: GRB
+        .flags = {
+            .invert_out = false, // don't invert the output signal
+        }
+    };
+
+    // LED strip backend configuration: RMT
+    led_strip_rmt_config_t rmt_config = {
+        .clk_src = RMT_CLK_SRC_DEFAULT,        // different clock source can lead to different power consumption
+        .resolution_hz = LED_STRIP_RMT_RES_HZ, // RMT counter clock frequency
+        .mem_block_symbols = LED_STRIP_MEMORY_BLOCK_WORDS, // the memory block size used by the RMT channel
+        .flags = {
+            .with_dma = LED_STRIP_USE_DMA,     // Using DMA can improve performance when driving more LEDs
+        }
+    };
+
+    // LED Strip object handle
+    led_strip_handle_t led_strip;
+    ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
+    ESP_LOGI(TAG, "Created LED strip object with RMT backend");
+    return led_strip;
+}
+
+void app_main(void)
+{
+    led_strip_handle_t led_strip = configure_led();
+    bool led_on_off = false;
+
+    ESP_LOGI(TAG, "Start blinking LED strip");
+    while (1) {
+        if (led_on_off) {
+            /* Set the LED pixel using RGB from 0 (0%) to 255 (100%) for each color */
+            for (int i = 0; i < LED_STRIP_LED_COUNT; i++) {
+                ESP_ERROR_CHECK(led_strip_set_pixel(led_strip, i, 5, 5, 5));
+            }
+            /* Refresh the strip to send data */
+            ESP_ERROR_CHECK(led_strip_refresh(led_strip));
+            ESP_LOGI(TAG, "LED ON!");
+        } else {
+            /* Set all LED off to clear all pixels */
+            ESP_ERROR_CHECK(led_strip_clear(led_strip));
+            ESP_LOGI(TAG, "LED OFF!");
+        }
+
+        led_on_off = !led_on_off;
+        vTaskDelay(pdMS_TO_TICKS(500));
+    }
+}

software/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.16)
+
+set(COMPONENTS main)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(led_strip_spi_ws2812)

software/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/README.md

@@ -0,0 +1,31 @@
+# LED Strip Example (SPI backend + WS2812)
+
+This example demonstrates how to blink the WS2812 LED using the [led_strip](https://components.espressif.com/component/espressif/led_strip) component.
+
+## How to Use Example
+
+### Hardware Required
+
+* A development board with Espressif SoC
+* A USB cable for Power supply and programming
+* WS2812 LED strip
+
+### Configure the Example
+
+Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`. Then assign the proper GPIO in the [source file](main/led_strip_spi_ws2812_main.c). If your led strip has multiple LEDs, don't forget update the number.
+
+### Build and Flash
+
+Run `idf.py -p PORT build flash monitor` to build, flash and monitor the project.
+
+(To exit the serial monitor, type ``Ctrl-]``.)
+
+See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html) for full steps to configure and use ESP-IDF to build projects.
+
+## Example Output
+
+```text
+I (299) gpio: GPIO[14]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
+I (309) example: Created LED strip object with SPI backend
+I (309) example: Start blinking LED strip
+```

software/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/main/CMakeLists.txt

@@ -0,0 +1,2 @@
+idf_component_register(SRCS "led_strip_spi_ws2812_main.c"
+                       INCLUDE_DIRS ".")

software/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/main/idf_component.yml

@@ -0,0 +1,4 @@
+dependencies:
+  espressif/led_strip:
+    version: ^3
+  idf: '>=5.1'

software/blink/managed_components/espressif__led_strip/examples/led_strip_spi_ws2812/main/led_strip_spi_ws2812_main.c

@@ -0,0 +1,81 @@
+/*
+ * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+#include <stdio.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "led_strip.h"
+#include "esp_log.h"
+#include "esp_err.h"
+
+// GPIO assignment
+#define LED_STRIP_GPIO_PIN  2
+// Numbers of the LED in the strip
+#define LED_STRIP_LED_COUNT 24
+
+static const char *TAG = "example";
+
+led_strip_handle_t configure_led(void)
+{
+    // LED strip general initialization, according to your led board design
+    led_strip_config_t strip_config = {
+        .strip_gpio_num = LED_STRIP_GPIO_PIN, // The GPIO that connected to the LED strip's data line
+        .max_leds = LED_STRIP_LED_COUNT,      // The number of LEDs in the strip,
+        .led_model = LED_MODEL_WS2812,        // LED strip model
+        // set the color order of the strip: GRB
+        .color_component_format = {
+            .format = {
+                .r_pos = 1, // red is the second byte in the color data
+                .g_pos = 0, // green is the first byte in the color data
+                .b_pos = 2, // blue is the third byte in the color data
+                .num_components = 3, // total 3 color components
+            },
+        },
+        .flags = {
+            .invert_out = false, // don't invert the output signal
+        }
+    };
+
+    // LED strip backend configuration: SPI
+    led_strip_spi_config_t spi_config = {
+        .clk_src = SPI_CLK_SRC_DEFAULT, // different clock source can lead to different power consumption
+        .spi_bus = SPI2_HOST,           // SPI bus ID
+        .flags = {
+            .with_dma = true, // Using DMA can improve performance and help drive more LEDs
+        }
+    };
+
+    // LED Strip object handle
+    led_strip_handle_t led_strip;
+    ESP_ERROR_CHECK(led_strip_new_spi_device(&strip_config, &spi_config, &led_strip));
+    ESP_LOGI(TAG, "Created LED strip object with SPI backend");
+    return led_strip;
+}
+
+void app_main(void)
+{
+    led_strip_handle_t led_strip = configure_led();
+    bool led_on_off = false;
+
+    ESP_LOGI(TAG, "Start blinking LED strip");
+    while (1) {
+        if (led_on_off) {
+            /* Set the LED pixel using RGB from 0 (0%) to 255 (100%) for each color */
+            for (int i = 0; i < LED_STRIP_LED_COUNT; i++) {
+                ESP_ERROR_CHECK(led_strip_set_pixel(led_strip, i, 5, 5, 5));
+            }
+            /* Refresh the strip to send data */
+            ESP_ERROR_CHECK(led_strip_refresh(led_strip));
+            ESP_LOGI(TAG, "LED ON!");
+        } else {
+            /* Set all LED off to clear all pixels */
+            ESP_ERROR_CHECK(led_strip_clear(led_strip));
+            ESP_LOGI(TAG, "LED OFF!");
+        }
+
+        led_on_off = !led_on_off;
+        vTaskDelay(pdMS_TO_TICKS(500));
+    }
+}

software/blink/managed_components/espressif__led_strip/idf_component.yml

@@ -0,0 +1,11 @@
+dependencies:
+  idf: '>=5.0'
+description: Driver for Addressable LED Strip (WS2812, etc)
+documentation: https://espressif.github.io/idf-extra-components/latest/led_strip/index.html
+issues: https://github.com/espressif/idf-extra-components/issues
+repository: git://github.com/espressif/idf-extra-components.git
+repository_info:
+  commit_sha: 7cd447361ca2f0a1c01aa3089e3031f6171b6c7e
+  path: led_strip
+url: https://github.com/espressif/idf-extra-components/tree/master/led_strip
+version: 3.0.3

software/blink/managed_components/espressif__led_strip/include/led_strip.h

@@ -0,0 +1,123 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+#include "led_strip_rmt.h"
+#include "led_strip_spi.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Set RGB for a specific pixel
+ *
+ * @param strip: LED strip
+ * @param index: index of pixel to set
+ * @param red: red part of color
+ * @param green: green part of color
+ * @param blue: blue part of color
+ *
+ * @return
+ *      - ESP_OK: Set RGB for a specific pixel successfully
+ *      - ESP_ERR_INVALID_ARG: Set RGB for a specific pixel failed because of invalid parameters
+ *      - ESP_FAIL: Set RGB for a specific pixel failed because other error occurred
+ */
+esp_err_t led_strip_set_pixel(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue);
+
+/**
+ * @brief Set RGBW for a specific pixel
+ *
+ * @note Only call this function if your led strip does have the white component (e.g. SK6812-RGBW)
+ * @note Also see `led_strip_set_pixel` if you only want to specify the RGB part of the color and bypass the white component
+ *
+ * @param strip: LED strip
+ * @param index: index of pixel to set
+ * @param red: red part of color
+ * @param green: green part of color
+ * @param blue: blue part of color
+ * @param white: separate white component
+ *
+ * @return
+ *      - ESP_OK: Set RGBW color for a specific pixel successfully
+ *      - ESP_ERR_INVALID_ARG: Set RGBW color for a specific pixel failed because of an invalid argument
+ *      - ESP_FAIL: Set RGBW color for a specific pixel failed because other error occurred
+ */
+esp_err_t led_strip_set_pixel_rgbw(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue, uint32_t white);
+
+/**
+ * @brief Set HSV for a specific pixel
+ *
+ * @param strip: LED strip
+ * @param index: index of pixel to set
+ * @param hue: hue part of color (0 - 360)
+ * @param saturation: saturation part of color (0 - 255, rescaled from 0 - 1. e.g. saturation = 0.5, rescaled to 127)
+ * @param value: value part of color (0 - 255, rescaled from 0 - 1. e.g. value = 0.5, rescaled to 127)
+ *
+ * @return
+ *      - ESP_OK: Set HSV color for a specific pixel successfully
+ *      - ESP_ERR_INVALID_ARG: Set HSV color for a specific pixel failed because of an invalid argument
+ *      - ESP_FAIL: Set HSV color for a specific pixel failed because other error occurred
+ */
+esp_err_t led_strip_set_pixel_hsv(led_strip_handle_t strip, uint32_t index, uint16_t hue, uint8_t saturation, uint8_t value);
+
+/**
+ * @brief Set HSV for a specific pixel in 16-bit resolution
+ *
+ * @param strip: LED strip
+ * @param index: index of pixel to set
+ * @param hue: hue part of color (0 - 360)
+ * @param saturation: saturation part of color (0 - 65535, rescaled from 0 - 1. e.g. saturation = 0.5, rescaled to 32767)
+ * @param value: value part of color (0 - 65535, rescaled from 0 - 1. e.g. value = 0.5, rescaled to 32767)
+ *
+ * @return
+ *      - ESP_OK: Set HSV color for a specific pixel successfully
+ *      - ESP_ERR_INVALID_ARG: Set HSV color for a specific pixel failed because of an invalid argument
+ *      - ESP_FAIL: Set HSV color for a specific pixel failed because other error occurred
+ */
+esp_err_t led_strip_set_pixel_hsv_16(led_strip_handle_t strip, uint32_t index, uint16_t hue, uint16_t saturation, uint16_t value);
+
+/**
+ * @brief Refresh memory colors to LEDs
+ *
+ * @param strip: LED strip
+ *
+ * @return
+ *      - ESP_OK: Refresh successfully
+ *      - ESP_FAIL: Refresh failed because some other error occurred
+ *
+ * @note:
+ *      After updating the LED colors in the memory, a following invocation of this API is needed to flush colors to strip.
+ */
+esp_err_t led_strip_refresh(led_strip_handle_t strip);
+
+/**
+ * @brief Clear LED strip (turn off all LEDs)
+ *
+ * @param strip: LED strip
+ *
+ * @return
+ *      - ESP_OK: Clear LEDs successfully
+ *      - ESP_FAIL: Clear LEDs failed because some other error occurred
+ */
+esp_err_t led_strip_clear(led_strip_handle_t strip);
+
+/**
+ * @brief Free LED strip resources
+ *
+ * @param strip: LED strip
+ *
+ * @return
+ *      - ESP_OK: Free resources successfully
+ *      - ESP_FAIL: Free resources failed because error occurred
+ */
+esp_err_t led_strip_del(led_strip_handle_t strip);
+
+#ifdef __cplusplus
+}
+#endif

software/blink/managed_components/espressif__led_strip/include/led_strip_rmt.h

@@ -0,0 +1,47 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+#include "led_strip_types.h"
+#include "esp_idf_version.h"
+#include "driver/rmt_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief LED Strip RMT specific configuration
+ */
+typedef struct {
+    rmt_clock_source_t clk_src; /*!< RMT clock source */
+    uint32_t resolution_hz;     /*!< RMT tick resolution, if set to zero, a default resolution (10MHz) will be applied */
+    size_t mem_block_symbols;   /*!< How many RMT symbols can one RMT channel hold at one time. Set to 0 will fallback to use the default size. */
+    /*!< Extra RMT specific driver flags */
+    struct led_strip_rmt_extra_config {
+        uint32_t with_dma: 1;   /*!< Use DMA to transmit data */
+    } flags;                    /*!< Extra driver flags */
+} led_strip_rmt_config_t;
+
+/**
+ * @brief Create LED strip based on RMT TX channel
+ *
+ * @param led_config LED strip configuration
+ * @param rmt_config RMT specific configuration
+ * @param ret_strip Returned LED strip handle
+ * @return
+ *      - ESP_OK: create LED strip handle successfully
+ *      - ESP_ERR_INVALID_ARG: create LED strip handle failed because of invalid argument
+ *      - ESP_ERR_NO_MEM: create LED strip handle failed because of out of memory
+ *      - ESP_FAIL: create LED strip handle failed because some other error
+ */
+esp_err_t led_strip_new_rmt_device(const led_strip_config_t *led_config, const led_strip_rmt_config_t *rmt_config, led_strip_handle_t *ret_strip);
+
+#ifdef __cplusplus
+}
+#endif

software/blink/managed_components/espressif__led_strip/include/led_strip_spi.h

@@ -0,0 +1,47 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+#include "driver/spi_master.h"
+#include "led_strip_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief LED Strip SPI specific configuration
+ */
+typedef struct {
+    spi_clock_source_t clk_src; /*!< SPI clock source */
+    spi_host_device_t spi_bus;  /*!< SPI bus ID. Which buses are available depends on the specific chip */
+    struct {
+        uint32_t with_dma: 1;   /*!< Use DMA to transmit data */
+    } flags;                    /*!< Extra driver flags */
+} led_strip_spi_config_t;
+
+/**
+ * @brief Create LED strip based on SPI MOSI channel
+ *
+ * @note Although only the MOSI line is used for generating the signal, the whole SPI bus can't be used for other purposes.
+ *
+ * @param led_config LED strip configuration
+ * @param spi_config SPI specific configuration
+ * @param ret_strip Returned LED strip handle
+ * @return
+ *      - ESP_OK: create LED strip handle successfully
+ *      - ESP_ERR_INVALID_ARG: create LED strip handle failed because of invalid argument
+ *      - ESP_ERR_NOT_SUPPORTED: create LED strip handle failed because of unsupported configuration
+ *      - ESP_ERR_NO_MEM: create LED strip handle failed because of out of memory
+ *      - ESP_FAIL: create LED strip handle failed because some other error
+ */
+esp_err_t led_strip_new_spi_device(const led_strip_config_t *led_config, const led_strip_spi_config_t *spi_config, led_strip_handle_t *ret_strip);
+
+#ifdef __cplusplus
+}
+#endif

software/blink/managed_components/espressif__led_strip/include/led_strip_types.h

@@ -0,0 +1,76 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Type of LED strip handle
+ */
+typedef struct led_strip_t *led_strip_handle_t;
+
+/**
+ * @brief LED strip model
+ * @note Different led model may have different timing parameters, so we need to distinguish them.
+ */
+typedef enum {
+    LED_MODEL_WS2812, /*!< LED strip model: WS2812 */
+    LED_MODEL_SK6812, /*!< LED strip model: SK6812 */
+    LED_MODEL_WS2811, /*!< LED strip model: WS2811 */
+    LED_MODEL_WS2816, /*!< LED strip model: WS2816 */
+    LED_MODEL_INVALID /*!< Invalid LED strip model */
+} led_model_t;
+
+/**
+ * @brief LED color component format
+ * @note The format is used to specify the order of color components in each pixel, also the number of color components.
+ */
+typedef union {
+    struct format_layout {
+        uint32_t r_pos: 2;           /*!< Position of the red channel in the color order: 0~3 */
+        uint32_t g_pos: 2;           /*!< Position of the green channel in the color order: 0~3 */
+        uint32_t b_pos: 2;           /*!< Position of the blue channel in the color order: 0~3 */
+        uint32_t w_pos: 2;           /*!< Position of the white channel in the color order: 0~3 */
+        uint32_t reserved: 19;       /*!< Reserved */
+        uint32_t bytes_per_color: 2; /*!< Bytes per color component: 1 or 2. If set to 0, it will fallback to 1 */
+        uint32_t num_components: 3;  /*!< Number of color components per pixel: 3 or 4. If set to 0, it will fallback to 3 */
+    } format;                        /*!< Format layout */
+    uint32_t format_id;              /*!< Format ID */
+} led_color_component_format_t;
+
+/// Helper macros to set the color component format
+#define LED_STRIP_COLOR_COMPONENT_FMT_GRB (led_color_component_format_t){.format = {.r_pos = 1, .g_pos = 0, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 1, .num_components = 3}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_GRB_16 (led_color_component_format_t){.format = {.r_pos = 1, .g_pos = 0, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 2, .num_components = 3}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_GRBW (led_color_component_format_t){.format = {.r_pos = 1, .g_pos = 0, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 1, .num_components = 4}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_GRBW_16 (led_color_component_format_t){.format = {.r_pos = 1, .g_pos = 0, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 2, .num_components = 4}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_RGB (led_color_component_format_t){.format = {.r_pos = 0, .g_pos = 1, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 1, .num_components = 3}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_RGB_16 (led_color_component_format_t){.format = {.r_pos = 0, .g_pos = 1, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 2, .num_components = 3}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_RGBW (led_color_component_format_t){.format = {.r_pos = 0, .g_pos = 1, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 1, .num_components = 4}}
+#define LED_STRIP_COLOR_COMPONENT_FMT_RGBW_16 (led_color_component_format_t){.format = {.r_pos = 0, .g_pos = 1, .b_pos = 2, .w_pos = 3, .reserved = 0, .bytes_per_color = 2, .num_components = 4}}
+
+/**
+ * @brief LED Strip common configurations
+ *        The common configurations are not specific to any backend peripheral.
+ */
+typedef struct {
+    int strip_gpio_num;           /*!< GPIO number that used by LED strip */
+    uint32_t max_leds;            /*!< Maximum number of LEDs that can be controlled in a single strip */
+    led_model_t led_model;        /*!< Specifies the LED strip model (e.g., WS2812, SK6812) */
+    led_color_component_format_t color_component_format; /*!< Specifies the order of color components in each pixel.
+                                                              Use helper macros like `LED_STRIP_COLOR_COMPONENT_FMT_GRB` to set the format */
+    /*!< LED strip extra driver flags */
+    struct led_strip_extra_flags {
+        uint32_t invert_out: 1; /*!< Invert output signal */
+    } flags; /*!< Extra driver flags */
+} led_strip_config_t;
+
+#ifdef __cplusplus
+}
+#endif

software/blink/managed_components/espressif__led_strip/interface/led_strip_interface.h

@@ -0,0 +1,95 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct led_strip_t led_strip_t; /*!< Type of LED strip */
+
+/**
+ * @brief LED strip interface definition
+ */
+struct led_strip_t {
+    /**
+     * @brief Set RGB for a specific pixel
+     *
+     * @param strip: LED strip
+     * @param index: index of pixel to set
+     * @param red: red part of color
+     * @param green: green part of color
+     * @param blue: blue part of color
+     *
+     * @return
+     *      - ESP_OK: Set RGB for a specific pixel successfully
+     *      - ESP_ERR_INVALID_ARG: Set RGB for a specific pixel failed because of invalid parameters
+     *      - ESP_FAIL: Set RGB for a specific pixel failed because other error occurred
+     */
+    esp_err_t (*set_pixel)(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue);
+
+    /**
+     * @brief Set RGBW for a specific pixel. Similar to `set_pixel` but also set the white component
+     *
+     * @param strip: LED strip
+     * @param index: index of pixel to set
+     * @param red: red part of color
+     * @param green: green part of color
+     * @param blue: blue part of color
+     * @param white: separate white component
+     *
+     * @return
+     *      - ESP_OK: Set RGBW color for a specific pixel successfully
+     *      - ESP_ERR_INVALID_ARG: Set RGBW color for a specific pixel failed because of an invalid argument
+     *      - ESP_FAIL: Set RGBW color for a specific pixel failed because other error occurred
+     */
+    esp_err_t (*set_pixel_rgbw)(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue, uint32_t white);
+
+    /**
+     * @brief Refresh memory colors to LEDs
+     *
+     * @param strip: LED strip
+     * @param timeout_ms: timeout value for refreshing task
+     *
+     * @return
+     *      - ESP_OK: Refresh successfully
+     *      - ESP_FAIL: Refresh failed because some other error occurred
+     *
+     * @note:
+     *      After updating the LED colors in the memory, a following invocation of this API is needed to flush colors to strip.
+     */
+    esp_err_t (*refresh)(led_strip_t *strip);
+
+    /**
+     * @brief Clear LED strip (turn off all LEDs)
+     *
+     * @param strip: LED strip
+     * @param timeout_ms: timeout value for clearing task
+     *
+     * @return
+     *      - ESP_OK: Clear LEDs successfully
+     *      - ESP_FAIL: Clear LEDs failed because some other error occurred
+     */
+    esp_err_t (*clear)(led_strip_t *strip);
+
+    /**
+     * @brief Free LED strip resources
+     *
+     * @param strip: LED strip
+     *
+     * @return
+     *      - ESP_OK: Free resources successfully
+     *      - ESP_FAIL: Free resources failed because error occurred
+     */
+    esp_err_t (*del)(led_strip_t *strip);
+};
+
+#ifdef __cplusplus
+}
+#endif

software/blink/managed_components/espressif__led_strip/src/led_strip_api.c

@@ -0,0 +1,147 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "esp_log.h"
+#include "esp_check.h"
+#include "led_strip.h"
+#include "led_strip_interface.h"
+
+static const char *TAG = "led_strip";
+
+esp_err_t led_strip_set_pixel(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+    return strip->set_pixel(strip, index, red, green, blue);
+}
+
+esp_err_t led_strip_set_pixel_hsv(led_strip_handle_t strip, uint32_t index, uint16_t hue, uint8_t saturation, uint8_t value)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+
+    uint32_t red = 0;
+    uint32_t green = 0;
+    uint32_t blue = 0;
+
+    uint32_t rgb_max = value;
+    uint32_t rgb_min = rgb_max * (255 - saturation) / 255;
+
+    uint32_t i = hue / 60;
+    uint32_t diff = hue % 60;
+
+    // RGB adjustment amount by hue
+    uint32_t rgb_adj = (rgb_max - rgb_min) * diff / 60;
+
+    switch (i) {
+    case 0:
+        red = rgb_max;
+        green = rgb_min + rgb_adj;
+        blue = rgb_min;
+        break;
+    case 1:
+        red = rgb_max - rgb_adj;
+        green = rgb_max;
+        blue = rgb_min;
+        break;
+    case 2:
+        red = rgb_min;
+        green = rgb_max;
+        blue = rgb_min + rgb_adj;
+        break;
+    case 3:
+        red = rgb_min;
+        green = rgb_max - rgb_adj;
+        blue = rgb_max;
+        break;
+    case 4:
+        red = rgb_min + rgb_adj;
+        green = rgb_min;
+        blue = rgb_max;
+        break;
+    default:
+        red = rgb_max;
+        green = rgb_min;
+        blue = rgb_max - rgb_adj;
+        break;
+    }
+
+    return strip->set_pixel(strip, index, red, green, blue);
+}
+
+esp_err_t led_strip_set_pixel_hsv_16(led_strip_handle_t strip, uint32_t index, uint16_t hue, uint16_t saturation, uint16_t value)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+
+    uint32_t red = 0;
+    uint32_t green = 0;
+    uint32_t blue = 0;
+
+    uint32_t rgb_max = value;
+    uint32_t rgb_min = rgb_max * (65535 - saturation) / 65535;
+
+    uint32_t i = hue / 60;
+    uint32_t diff = hue % 60;
+
+    // RGB adjustment amount by hue
+    uint32_t rgb_adj = (rgb_max - rgb_min) * diff / 60;
+
+    switch (i) {
+    case 0:
+        red = rgb_max;
+        green = rgb_min + rgb_adj;
+        blue = rgb_min;
+        break;
+    case 1:
+        red = rgb_max - rgb_adj;
+        green = rgb_max;
+        blue = rgb_min;
+        break;
+    case 2:
+        red = rgb_min;
+        green = rgb_max;
+        blue = rgb_min + rgb_adj;
+        break;
+    case 3:
+        red = rgb_min;
+        green = rgb_max - rgb_adj;
+        blue = rgb_max;
+        break;
+    case 4:
+        red = rgb_min + rgb_adj;
+        green = rgb_min;
+        blue = rgb_max;
+        break;
+    default:
+        red = rgb_max;
+        green = rgb_min;
+        blue = rgb_max - rgb_adj;
+        break;
+    }
+
+    return strip->set_pixel(strip, index, red, green, blue);
+}
+
+esp_err_t led_strip_set_pixel_rgbw(led_strip_handle_t strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue, uint32_t white)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+    return strip->set_pixel_rgbw(strip, index, red, green, blue, white);
+}
+
+esp_err_t led_strip_refresh(led_strip_handle_t strip)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+    return strip->refresh(strip);
+}
+
+esp_err_t led_strip_clear(led_strip_handle_t strip)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+    return strip->clear(strip);
+}
+
+esp_err_t led_strip_del(led_strip_handle_t strip)
+{
+    ESP_RETURN_ON_FALSE(strip, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
+    return strip->del(strip);
+}

software/blink/managed_components/espressif__led_strip/src/led_strip_rmt_dev.c

@@ -0,0 +1,198 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <sys/cdefs.h>
+#include "esp_log.h"
+#include "esp_check.h"
+#include "driver/rmt_tx.h"
+#include "led_strip.h"
+#include "led_strip_interface.h"
+#include "led_strip_rmt_encoder.h"
+
+#define LED_STRIP_RMT_DEFAULT_RESOLUTION 10000000 // 10MHz resolution
+#define LED_STRIP_RMT_DEFAULT_TRANS_QUEUE_SIZE 4
+// the memory size of each RMT channel, in words (4 bytes)
+#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2
+#define LED_STRIP_RMT_DEFAULT_MEM_BLOCK_SYMBOLS 64
+#else
+#define LED_STRIP_RMT_DEFAULT_MEM_BLOCK_SYMBOLS 48
+#endif
+
+static const char *TAG = "led_strip_rmt";
+
+typedef struct {
+    led_strip_t base;
+    rmt_channel_handle_t rmt_chan;
+    rmt_encoder_handle_t strip_encoder;
+    uint32_t strip_len;
+    uint8_t bytes_per_pixel;
+    led_color_component_format_t component_fmt;
+    uint8_t pixel_buf[];
+} led_strip_rmt_obj;
+
+static esp_err_t led_strip_rmt_set_pixel(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
+{
+    led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
+    ESP_RETURN_ON_FALSE(index < rmt_strip->strip_len, ESP_ERR_INVALID_ARG, TAG, "index out of maximum number of LEDs");
+
+    struct format_layout format = rmt_strip->component_fmt.format;
+    uint32_t start = index * rmt_strip->bytes_per_pixel;
+    uint8_t *pixel_buf = rmt_strip->pixel_buf;
+    uint8_t pos_bytes = format.bytes_per_color;
+
+    for (uint8_t i = 0; i < format.bytes_per_color; i++) {
+        uint8_t color_shift = 8 * (format.bytes_per_color - 1 - i);
+        pixel_buf[start + format.r_pos * pos_bytes + i] = (red >> color_shift) & 0xFF;
+        pixel_buf[start + format.g_pos * pos_bytes + i] = (green >> color_shift) & 0xFF;
+        pixel_buf[start + format.b_pos * pos_bytes + i] = (blue >> color_shift) & 0xFF;
+        if (format.num_components > 3) {
+            pixel_buf[start + format.w_pos * pos_bytes + i] = 0;
+        }
+    }
+    return ESP_OK;
+}
+
+static esp_err_t led_strip_rmt_set_pixel_rgbw(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue, uint32_t white)
+{
+    led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
+    struct format_layout format = rmt_strip->component_fmt.format;
+    ESP_RETURN_ON_FALSE(index < rmt_strip->strip_len, ESP_ERR_INVALID_ARG, TAG, "index out of maximum number of LEDs");
+    ESP_RETURN_ON_FALSE(format.num_components == 4, ESP_ERR_INVALID_ARG, TAG, "led doesn't have 4 components");
+
+    uint32_t start = index * rmt_strip->bytes_per_pixel;
+    uint8_t *pixel_buf = rmt_strip->pixel_buf;
+    uint8_t pos_bytes = format.bytes_per_color;
+
+    for (uint8_t i = 0; i < format.bytes_per_color; i++) {
+        uint8_t color_shift = 8 * (format.bytes_per_color - 1 - i);
+        pixel_buf[start + format.r_pos * pos_bytes + i] = (red >> color_shift) & 0xFF;
+        pixel_buf[start + format.g_pos * pos_bytes + i] = (green >> color_shift) & 0xFF;
+        pixel_buf[start + format.b_pos * pos_bytes + i] = (blue >> color_shift) & 0xFF;
+        pixel_buf[start + format.w_pos * pos_bytes + i] = (white >> color_shift) & 0xFF;
+    }
+    return ESP_OK;
+}
+
+static esp_err_t led_strip_rmt_refresh(led_strip_t *strip)
+{
+    led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
+    rmt_transmit_config_t tx_conf = {
+        .loop_count = 0,
+    };
+
+    ESP_RETURN_ON_ERROR(rmt_enable(rmt_strip->rmt_chan), TAG, "enable RMT channel failed");
+    ESP_RETURN_ON_ERROR(rmt_transmit(rmt_strip->rmt_chan, rmt_strip->strip_encoder, rmt_strip->pixel_buf,
+                                     rmt_strip->strip_len * rmt_strip->bytes_per_pixel, &tx_conf), TAG, "transmit pixels by RMT failed");
+    ESP_RETURN_ON_ERROR(rmt_tx_wait_all_done(rmt_strip->rmt_chan, -1), TAG, "flush RMT channel failed");
+    ESP_RETURN_ON_ERROR(rmt_disable(rmt_strip->rmt_chan), TAG, "disable RMT channel failed");
+    return ESP_OK;
+}
+
+static esp_err_t led_strip_rmt_clear(led_strip_t *strip)
+{
+    led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
+    // Write zero to turn off all leds
+    memset(rmt_strip->pixel_buf, 0, rmt_strip->strip_len * rmt_strip->bytes_per_pixel);
+    return led_strip_rmt_refresh(strip);
+}
+
+static esp_err_t led_strip_rmt_del(led_strip_t *strip)
+{
+    led_strip_rmt_obj *rmt_strip = __containerof(strip, led_strip_rmt_obj, base);
+    ESP_RETURN_ON_ERROR(rmt_del_channel(rmt_strip->rmt_chan), TAG, "delete RMT channel failed");
+    ESP_RETURN_ON_ERROR(rmt_del_encoder(rmt_strip->strip_encoder), TAG, "delete strip encoder failed");
+    free(rmt_strip);
+    return ESP_OK;
+}
+
+esp_err_t led_strip_new_rmt_device(const led_strip_config_t *led_config, const led_strip_rmt_config_t *rmt_config, led_strip_handle_t *ret_strip)
+{
+    led_strip_rmt_obj *rmt_strip = NULL;
+    esp_err_t ret = ESP_OK;
+    ESP_GOTO_ON_FALSE(led_config && rmt_config && ret_strip, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
+    led_color_component_format_t component_fmt = led_config->color_component_format;
+    // If R/G/B order is not specified, set default GRB order as fallback
+    if (component_fmt.format_id == 0) {
+        component_fmt = LED_STRIP_COLOR_COMPONENT_FMT_GRB;
+    }
+    if (led_config->led_model == LED_MODEL_WS2816) {
+        component_fmt.format.bytes_per_color = 2;
+    }
+    if (component_fmt.format.bytes_per_color == 0) {
+        component_fmt.format.bytes_per_color = 1;
+    }
+    // check the validation of the color component format
+    uint8_t mask = 0;
+    if (component_fmt.format.num_components == 3) {
+        mask = BIT(component_fmt.format.r_pos) | BIT(component_fmt.format.g_pos) | BIT(component_fmt.format.b_pos);
+        // Check for invalid values
+        ESP_RETURN_ON_FALSE(mask == 0x07, ESP_ERR_INVALID_ARG, TAG, "invalid order argument");
+    } else if (component_fmt.format.num_components == 4) {
+        mask = BIT(component_fmt.format.r_pos) | BIT(component_fmt.format.g_pos) | BIT(component_fmt.format.b_pos) | BIT(component_fmt.format.w_pos);
+        // Check for invalid values
+        ESP_RETURN_ON_FALSE(mask == 0x0F, ESP_ERR_INVALID_ARG, TAG, "invalid order argument");
+    } else {
+        ESP_RETURN_ON_FALSE(false, ESP_ERR_INVALID_ARG, TAG, "invalid number of color components: %d", component_fmt.format.num_components);
+    }
+    uint8_t bytes_per_pixel = component_fmt.format.num_components;
+    if (component_fmt.format.bytes_per_color > 1) {
+        bytes_per_pixel *= component_fmt.format.bytes_per_color;
+    }
+    rmt_strip = calloc(1, sizeof(led_strip_rmt_obj) + led_config->max_leds * bytes_per_pixel);
+    ESP_GOTO_ON_FALSE(rmt_strip, ESP_ERR_NO_MEM, err, TAG, "no mem for rmt strip");
+    uint32_t resolution = rmt_config->resolution_hz ? rmt_config->resolution_hz : LED_STRIP_RMT_DEFAULT_RESOLUTION;
+
+    // for backward compatibility, if the user does not set the clk_src, use the default value
+    rmt_clock_source_t clk_src = RMT_CLK_SRC_DEFAULT;
+    if (rmt_config->clk_src) {
+        clk_src = rmt_config->clk_src;
+    }
+    size_t mem_block_symbols = LED_STRIP_RMT_DEFAULT_MEM_BLOCK_SYMBOLS;
+    // override the default value if the user sets it
+    if (rmt_config->mem_block_symbols) {
+        mem_block_symbols = rmt_config->mem_block_symbols;
+    }
+    rmt_tx_channel_config_t rmt_chan_config = {
+        .clk_src = clk_src,
+        .gpio_num = led_config->strip_gpio_num,
+        .mem_block_symbols = mem_block_symbols,
+        .resolution_hz = resolution,
+        .trans_queue_depth = LED_STRIP_RMT_DEFAULT_TRANS_QUEUE_SIZE,
+        .flags.with_dma = rmt_config->flags.with_dma,
+        .flags.invert_out = led_config->flags.invert_out,
+    };
+    ESP_GOTO_ON_ERROR(rmt_new_tx_channel(&rmt_chan_config, &rmt_strip->rmt_chan), err, TAG, "create RMT TX channel failed");
+
+    led_strip_encoder_config_t strip_encoder_conf = {
+        .resolution = resolution,
+        .led_model = led_config->led_model
+    };
+    ESP_GOTO_ON_ERROR(rmt_new_led_strip_encoder(&strip_encoder_conf, &rmt_strip->strip_encoder), err, TAG, "create LED strip encoder failed");
+
+    rmt_strip->component_fmt = component_fmt;
+    rmt_strip->bytes_per_pixel = bytes_per_pixel;
+    rmt_strip->strip_len = led_config->max_leds;
+    rmt_strip->base.set_pixel = led_strip_rmt_set_pixel;
+    rmt_strip->base.set_pixel_rgbw = led_strip_rmt_set_pixel_rgbw;
+    rmt_strip->base.refresh = led_strip_rmt_refresh;
+    rmt_strip->base.clear = led_strip_rmt_clear;
+    rmt_strip->base.del = led_strip_rmt_del;
+
+    *ret_strip = &rmt_strip->base;
+    return ESP_OK;
+err:
+    if (rmt_strip) {
+        if (rmt_strip->rmt_chan) {
+            rmt_del_channel(rmt_strip->rmt_chan);
+        }
+        if (rmt_strip->strip_encoder) {
+            rmt_del_encoder(rmt_strip->strip_encoder);
+        }
+        free(rmt_strip);
+    }
+    return ret;
+}

software/blink/managed_components/espressif__led_strip/src/led_strip_rmt_encoder.c

@@ -0,0 +1,194 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "sdkconfig.h"
+#include "esp_idf_version.h"
+#include "esp_check.h"
+#include "esp_attr.h"
+#include "led_strip_rmt_encoder.h"
+
+static const char *TAG = "led_rmt_encoder";
+
+#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 5, 0)
+#if CONFIG_RMT_ISR_IRAM_SAFE
+#define RMT_ENCODER_FUNC_ATTR IRAM_ATTR
+#else
+#define RMT_ENCODER_FUNC_ATTR
+#endif // CONFIG_RMT_ISR_IRAM_SAFE
+#endif // ESP_IDF_VERSION
+
+typedef struct {
+    rmt_encoder_t base;
+    rmt_encoder_t *bytes_encoder;
+    rmt_encoder_t *copy_encoder;
+    int state;
+    rmt_symbol_word_t reset_code;
+} rmt_led_strip_encoder_t;
+
+RMT_ENCODER_FUNC_ATTR
+static size_t rmt_encode_led_strip(rmt_encoder_t *encoder, rmt_channel_handle_t channel, const void *primary_data, size_t data_size, rmt_encode_state_t *ret_state)
+{
+    rmt_led_strip_encoder_t *led_encoder = __containerof(encoder, rmt_led_strip_encoder_t, base);
+    rmt_encoder_handle_t bytes_encoder = led_encoder->bytes_encoder;
+    rmt_encoder_handle_t copy_encoder = led_encoder->copy_encoder;
+    rmt_encode_state_t session_state = 0;
+    rmt_encode_state_t state = 0;
+    size_t encoded_symbols = 0;
+    switch (led_encoder->state) {
+    case 0: // send RGB data
+        encoded_symbols += bytes_encoder->encode(bytes_encoder, channel, primary_data, data_size, &session_state);
+        if (session_state & RMT_ENCODING_COMPLETE) {
+            led_encoder->state = 1; // switch to next state when current encoding session finished
+        }
+        if (session_state & RMT_ENCODING_MEM_FULL) {
+            state |= RMT_ENCODING_MEM_FULL;
+            goto out; // yield if there's no free space for encoding artifacts
+        }
+    // fall-through
+    case 1: // send reset code
+        encoded_symbols += copy_encoder->encode(copy_encoder, channel, &led_encoder->reset_code,
+                                                sizeof(led_encoder->reset_code), &session_state);
+        if (session_state & RMT_ENCODING_COMPLETE) {
+            led_encoder->state = 0; // back to the initial encoding session
+            state |= RMT_ENCODING_COMPLETE;
+        }
+        if (session_state & RMT_ENCODING_MEM_FULL) {
+            state |= RMT_ENCODING_MEM_FULL;
+            goto out; // yield if there's no free space for encoding artifacts
+        }
+    }
+out:
+    *ret_state = state;
+    return encoded_symbols;
+}
+
+static esp_err_t rmt_del_led_strip_encoder(rmt_encoder_t *encoder)
+{
+    rmt_led_strip_encoder_t *led_encoder = __containerof(encoder, rmt_led_strip_encoder_t, base);
+    rmt_del_encoder(led_encoder->bytes_encoder);
+    rmt_del_encoder(led_encoder->copy_encoder);
+    free(led_encoder);
+    return ESP_OK;
+}
+
+RMT_ENCODER_FUNC_ATTR
+static esp_err_t rmt_led_strip_encoder_reset(rmt_encoder_t *encoder)
+{
+    rmt_led_strip_encoder_t *led_encoder = __containerof(encoder, rmt_led_strip_encoder_t, base);
+    rmt_encoder_reset(led_encoder->bytes_encoder);
+    rmt_encoder_reset(led_encoder->copy_encoder);
+    led_encoder->state = 0;
+    return ESP_OK;
+}
+
+esp_err_t rmt_new_led_strip_encoder(const led_strip_encoder_config_t *config, rmt_encoder_handle_t *ret_encoder)
+{
+    esp_err_t ret = ESP_OK;
+    rmt_led_strip_encoder_t *led_encoder = NULL;
+    ESP_GOTO_ON_FALSE(config && ret_encoder, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
+    ESP_GOTO_ON_FALSE(config->led_model < LED_MODEL_INVALID, ESP_ERR_INVALID_ARG, err, TAG, "invalid led model");
+    led_encoder = calloc(1, sizeof(rmt_led_strip_encoder_t));
+    ESP_GOTO_ON_FALSE(led_encoder, ESP_ERR_NO_MEM, err, TAG, "no mem for led strip encoder");
+    led_encoder->base.encode = rmt_encode_led_strip;
+    led_encoder->base.del = rmt_del_led_strip_encoder;
+    led_encoder->base.reset = rmt_led_strip_encoder_reset;
+    rmt_bytes_encoder_config_t bytes_encoder_config;
+    uint32_t reset_ticks = config->resolution / 1000000 * 280 / 2; // reset code duration defaults to 280us to accommodate WS2812B-V5
+    if (config->led_model == LED_MODEL_SK6812) {
+        bytes_encoder_config = (rmt_bytes_encoder_config_t) {
+            .bit0 = {
+                .level0 = 1,
+                .duration0 = 0.3 * config->resolution / 1000000, // T0H=0.3us
+                .level1 = 0,
+                .duration1 = 0.9 * config->resolution / 1000000, // T0L=0.9us
+            },
+            .bit1 = {
+                .level0 = 1,
+                .duration0 = 0.6 * config->resolution / 1000000, // T1H=0.6us
+                .level1 = 0,
+                .duration1 = 0.6 * config->resolution / 1000000, // T1L=0.6us
+            },
+            .flags.msb_first = 1 // SK6812 transfer bit order: G7...G0R7...R0B7...B0(W7...W0)
+        };
+    } else if (config->led_model == LED_MODEL_WS2812) {
+        // different led strip might have its own timing requirements, following parameter is for WS2812
+        bytes_encoder_config = (rmt_bytes_encoder_config_t) {
+            .bit0 = {
+                .level0 = 1,
+                .duration0 = 0.3 * config->resolution / 1000000, // T0H=0.3us
+                .level1 = 0,
+                .duration1 = 0.9 * config->resolution / 1000000, // T0L=0.9us
+            },
+            .bit1 = {
+                .level0 = 1,
+                .duration0 = 0.9 * config->resolution / 1000000, // T1H=0.9us
+                .level1 = 0,
+                .duration1 = 0.3 * config->resolution / 1000000, // T1L=0.3us
+            },
+            .flags.msb_first = 1 // WS2812 transfer bit order: G7...G0R7...R0B7...B0
+        };
+    } else if (config->led_model == LED_MODEL_WS2811) {
+        // different led strip might have its own timing requirements, following parameter is for WS2811
+        bytes_encoder_config = (rmt_bytes_encoder_config_t) {
+            .bit0 = {
+                .level0 = 1,
+                .duration0 = 0.5 * config->resolution / 1000000., // T0H=0.5us
+                .level1 = 0,
+                .duration1 = 2.0 * config->resolution / 1000000., // T0L=2.0us
+            },
+            .bit1 = {
+                .level0 = 1,
+                .duration0 = 1.2 * config->resolution / 1000000., // T1H=1.2us
+                .level1 = 0,
+                .duration1 = 1.3 * config->resolution / 1000000., // T1L=1.3us
+            },
+            .flags.msb_first = 1
+        };
+        reset_ticks = config->resolution / 1000000 * 50 / 2; // divide by 2... signal is sent twice
+    } else if (config->led_model == LED_MODEL_WS2816) {
+        // different led strip might have its own timing requirements, following parameter is for WS2816
+        bytes_encoder_config = (rmt_bytes_encoder_config_t) {
+            .bit0 = {
+                .level0 = 1,
+                .duration0 = 0.3 * config->resolution / 1000000, // T0H=0.3us
+                .level1 = 0,
+                .duration1 = 0.95 * config->resolution / 1000000, // T0L=0.95us
+            },
+            .bit1 = {
+                .level0 = 1,
+                .duration0 = 0.75 * config->resolution / 1000000, // T1H=0.75us
+                .level1 = 0,
+                .duration1 = 0.5 * config->resolution / 1000000, // T1L=0.5us
+            },
+            .flags.msb_first = 1
+        };
+    } else {
+        assert(false);
+    }
+    ESP_GOTO_ON_ERROR(rmt_new_bytes_encoder(&bytes_encoder_config, &led_encoder->bytes_encoder), err, TAG, "create bytes encoder failed");
+    rmt_copy_encoder_config_t copy_encoder_config = {};
+    ESP_GOTO_ON_ERROR(rmt_new_copy_encoder(&copy_encoder_config, &led_encoder->copy_encoder), err, TAG, "create copy encoder failed");
+
+    led_encoder->reset_code = (rmt_symbol_word_t) {
+        .level0 = 0,
+        .duration0 = reset_ticks,
+        .level1 = 0,
+        .duration1 = reset_ticks,
+    };
+    *ret_encoder = &led_encoder->base;
+    return ESP_OK;
+err:
+    if (led_encoder) {
+        if (led_encoder->bytes_encoder) {
+            rmt_del_encoder(led_encoder->bytes_encoder);
+        }
+        if (led_encoder->copy_encoder) {
+            rmt_del_encoder(led_encoder->copy_encoder);
+        }
+        free(led_encoder);
+    }
+    return ret;
+}

software/blink/managed_components/espressif__led_strip/src/led_strip_rmt_encoder.h

@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#pragma once
+
+#include <stdint.h>
+#include "driver/rmt_encoder.h"
+#include "led_strip_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Type of led strip encoder configuration
+ */
+typedef struct {
+    uint32_t resolution;   /*!< Encoder resolution, in Hz */
+    led_model_t led_model; /*!< LED model */
+} led_strip_encoder_config_t;
+
+/**
+ * @brief Create RMT encoder for encoding LED strip pixels into RMT symbols
+ *
+ * @param[in] config Encoder configuration
+ * @param[out] ret_encoder Returned encoder handle
+ * @return
+ *      - ESP_ERR_INVALID_ARG for any invalid arguments
+ *      - ESP_ERR_NO_MEM out of memory when creating led strip encoder
+ *      - ESP_OK if creating encoder successfully
+ */
+esp_err_t rmt_new_led_strip_encoder(const led_strip_encoder_config_t *config, rmt_encoder_handle_t *ret_encoder);
+
+#ifdef __cplusplus
+}
+#endif

software/blink/managed_components/espressif__led_strip/src/led_strip_spi_dev.c

@@ -0,0 +1,248 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <sys/cdefs.h>
+#include "esp_log.h"
+#include "esp_check.h"
+#include "esp_rom_gpio.h"
+#include "soc/spi_periph.h"
+#include "led_strip.h"
+#include "led_strip_interface.h"
+#include "esp_heap_caps.h"
+
+#define LED_STRIP_SPI_DEFAULT_RESOLUTION (2.5 * 1000 * 1000) // 2.5MHz resolution
+#define LED_STRIP_SPI_DEFAULT_TRANS_QUEUE_SIZE 4
+
+#define SPI_BYTES_PER_COLOR_BYTE 3
+#define SPI_BITS_PER_COLOR_BYTE (SPI_BYTES_PER_COLOR_BYTE * 8)
+
+static const char *TAG = "led_strip_spi";
+
+typedef struct {
+    led_strip_t base;
+    spi_host_device_t spi_host;
+    spi_device_handle_t spi_device;
+    uint32_t strip_len;
+    uint8_t bytes_per_pixel;
+    led_color_component_format_t component_fmt;
+    uint8_t pixel_buf[];
+} led_strip_spi_obj;
+
+// please make sure to zero-initialize the buf before calling this function
+static void __led_strip_spi_bit(uint8_t data, uint8_t *buf)
+{
+    // Each color of 1 bit is represented by 3 bits of SPI, low_level:100 ,high_level:110
+    // So a color byte occupies 3 bytes of SPI.
+    *(buf + 2) |= data & BIT(0) ? BIT(2) | BIT(1) : BIT(2);
+    *(buf + 2) |= data & BIT(1) ? BIT(5) | BIT(4) : BIT(5);
+    *(buf + 2) |= data & BIT(2) ? BIT(7) : 0x00;
+    *(buf + 1) |= BIT(0);
+    *(buf + 1) |= data & BIT(3) ? BIT(3) | BIT(2) : BIT(3);
+    *(buf + 1) |= data & BIT(4) ? BIT(6) | BIT(5) : BIT(6);
+    *(buf + 0) |= data & BIT(5) ? BIT(1) | BIT(0) : BIT(1);
+    *(buf + 0) |= data & BIT(6) ? BIT(4) | BIT(3) : BIT(4);
+    *(buf + 0) |= data & BIT(7) ? BIT(7) | BIT(6) : BIT(7);
+}
+
+static esp_err_t led_strip_spi_set_pixel(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue)
+{
+    led_strip_spi_obj *spi_strip = __containerof(strip, led_strip_spi_obj, base);
+    ESP_RETURN_ON_FALSE(index < spi_strip->strip_len, ESP_ERR_INVALID_ARG, TAG, "index out of maximum number of LEDs");
+    // 3 pixels take 72bits(9bytes)
+    uint32_t start = index * spi_strip->bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE;
+    uint8_t *pixel_buf = spi_strip->pixel_buf;
+    struct format_layout format = spi_strip->component_fmt.format;
+    memset(pixel_buf + start, 0, spi_strip->bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE);
+
+    uint8_t pos_bytes = format.bytes_per_color;
+    for (uint8_t i = 0; i < format.bytes_per_color; i++) {
+        uint8_t color_shift = 8 * (format.bytes_per_color - 1 - i);
+        __led_strip_spi_bit((red >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.r_pos * pos_bytes + i)]);
+        __led_strip_spi_bit((green >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.g_pos * pos_bytes + i)]);
+        __led_strip_spi_bit((blue >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.b_pos * pos_bytes + i)]);
+        if (format.num_components > 3) {
+            __led_strip_spi_bit(0, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.w_pos * pos_bytes + i)]);
+        }
+    }
+    return ESP_OK;
+}
+
+static esp_err_t led_strip_spi_set_pixel_rgbw(led_strip_t *strip, uint32_t index, uint32_t red, uint32_t green, uint32_t blue, uint32_t white)
+{
+    led_strip_spi_obj *spi_strip = __containerof(strip, led_strip_spi_obj, base);
+    struct format_layout format = spi_strip->component_fmt.format;
+    ESP_RETURN_ON_FALSE(index < spi_strip->strip_len, ESP_ERR_INVALID_ARG, TAG, "index out of maximum number of LEDs");
+    ESP_RETURN_ON_FALSE(format.num_components == 4, ESP_ERR_INVALID_ARG, TAG, "led doesn't have 4 components");
+
+    // LED_PIXEL_FORMAT_GRBW takes 96bits(12bytes)
+    uint32_t start = index * spi_strip->bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE;
+    uint8_t *pixel_buf = spi_strip->pixel_buf;
+    memset(pixel_buf + start, 0, spi_strip->bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE);
+
+    uint8_t pos_bytes = format.bytes_per_color;
+    for (uint8_t i = 0; i < format.bytes_per_color; i++) {
+        uint8_t color_shift = 8 * (format.bytes_per_color - 1 - i);
+        __led_strip_spi_bit((red >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.r_pos * pos_bytes + i)]);
+        __led_strip_spi_bit((green >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.g_pos * pos_bytes + i)]);
+        __led_strip_spi_bit((blue >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.b_pos * pos_bytes + i)]);
+        __led_strip_spi_bit((white >> color_shift) & 0xFF, &pixel_buf[start + SPI_BYTES_PER_COLOR_BYTE * (format.w_pos * pos_bytes + i)]);
+    }
+    return ESP_OK;
+}
+
+static esp_err_t led_strip_spi_refresh(led_strip_t *strip)
+{
+    led_strip_spi_obj *spi_strip = __containerof(strip, led_strip_spi_obj, base);
+    spi_transaction_t tx_conf;
+    memset(&tx_conf, 0, sizeof(tx_conf));
+
+    tx_conf.length = spi_strip->strip_len * spi_strip->bytes_per_pixel * SPI_BITS_PER_COLOR_BYTE;
+    tx_conf.tx_buffer = spi_strip->pixel_buf;
+    tx_conf.rx_buffer = NULL;
+    ESP_RETURN_ON_ERROR(spi_device_transmit(spi_strip->spi_device, &tx_conf), TAG, "transmit pixels by SPI failed");
+
+    return ESP_OK;
+}
+
+static esp_err_t led_strip_spi_clear(led_strip_t *strip)
+{
+    led_strip_spi_obj *spi_strip = __containerof(strip, led_strip_spi_obj, base);
+    //Write zero to turn off all leds
+    memset(spi_strip->pixel_buf, 0, spi_strip->strip_len * spi_strip->bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE);
+    uint8_t *buf = spi_strip->pixel_buf;
+    for (int index = 0; index < spi_strip->strip_len * spi_strip->bytes_per_pixel; index++) {
+        __led_strip_spi_bit(0, buf);
+        buf += SPI_BYTES_PER_COLOR_BYTE;
+    }
+
+    return led_strip_spi_refresh(strip);
+}
+
+static esp_err_t led_strip_spi_del(led_strip_t *strip)
+{
+    led_strip_spi_obj *spi_strip = __containerof(strip, led_strip_spi_obj, base);
+
+    ESP_RETURN_ON_ERROR(spi_bus_remove_device(spi_strip->spi_device), TAG, "delete spi device failed");
+    ESP_RETURN_ON_ERROR(spi_bus_free(spi_strip->spi_host), TAG, "free spi bus failed");
+
+    free(spi_strip);
+    return ESP_OK;
+}
+
+esp_err_t led_strip_new_spi_device(const led_strip_config_t *led_config, const led_strip_spi_config_t *spi_config, led_strip_handle_t *ret_strip)
+{
+    led_strip_spi_obj *spi_strip = NULL;
+    esp_err_t ret = ESP_OK;
+    ESP_GOTO_ON_FALSE(led_config && spi_config && ret_strip, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
+    led_color_component_format_t component_fmt = led_config->color_component_format;
+    // If R/G/B order is not specified, set default GRB order as fallback
+    if (component_fmt.format_id == 0) {
+        component_fmt = LED_STRIP_COLOR_COMPONENT_FMT_GRB;
+    }
+    if (led_config->led_model == LED_MODEL_WS2816) {
+        component_fmt.format.bytes_per_color = 2;
+    }
+    if (component_fmt.format.bytes_per_color == 0) {
+        component_fmt.format.bytes_per_color = 1;
+    }
+    uint8_t mask = 0;
+    if (component_fmt.format.num_components == 3) {
+        mask = BIT(component_fmt.format.r_pos) | BIT(component_fmt.format.g_pos) | BIT(component_fmt.format.b_pos);
+        // Check for invalid values
+        ESP_RETURN_ON_FALSE(mask == 0x07, ESP_ERR_INVALID_ARG, TAG, "invalid order argument");
+    } else if (component_fmt.format.num_components == 4) {
+        mask = BIT(component_fmt.format.r_pos) | BIT(component_fmt.format.g_pos) | BIT(component_fmt.format.b_pos) | BIT(component_fmt.format.w_pos);
+        // Check for invalid values
+        ESP_RETURN_ON_FALSE(mask == 0x0F, ESP_ERR_INVALID_ARG, TAG, "invalid order argument");
+    } else {
+        ESP_RETURN_ON_FALSE(false, ESP_ERR_INVALID_ARG, TAG, "invalid number of color components: %d", component_fmt.format.num_components);
+    }
+    uint8_t bytes_per_pixel = component_fmt.format.num_components;
+    if (component_fmt.format.bytes_per_color > 1) {
+        bytes_per_pixel *= component_fmt.format.bytes_per_color;
+    }
+    uint32_t mem_caps = MALLOC_CAP_DEFAULT;
+    if (spi_config->flags.with_dma) {
+        // DMA buffer must be placed in internal SRAM
+        mem_caps |= MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA;
+    }
+    spi_strip = heap_caps_calloc(1, sizeof(led_strip_spi_obj) + led_config->max_leds * bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE, mem_caps);
+
+    ESP_GOTO_ON_FALSE(spi_strip, ESP_ERR_NO_MEM, err, TAG, "no mem for spi strip");
+
+    spi_strip->spi_host = spi_config->spi_bus;
+    // for backward compatibility, if the user does not set the clk_src, use the default value
+    spi_clock_source_t clk_src = SPI_CLK_SRC_DEFAULT;
+    if (spi_config->clk_src) {
+        clk_src = spi_config->clk_src;
+    }
+
+    spi_bus_config_t spi_bus_cfg = {
+        .mosi_io_num = led_config->strip_gpio_num,
+        //Only use MOSI to generate the signal, set -1 when other pins are not used.
+        .miso_io_num = -1,
+        .sclk_io_num = -1,
+        .quadwp_io_num = -1,
+        .quadhd_io_num = -1,
+        .max_transfer_sz = led_config->max_leds * bytes_per_pixel * SPI_BYTES_PER_COLOR_BYTE,
+    };
+    ESP_GOTO_ON_ERROR(spi_bus_initialize(spi_strip->spi_host, &spi_bus_cfg, spi_config->flags.with_dma ? SPI_DMA_CH_AUTO : SPI_DMA_DISABLED), err, TAG, "create SPI bus failed");
+
+    if (led_config->flags.invert_out == true) {
+        esp_rom_gpio_connect_out_signal(led_config->strip_gpio_num, spi_periph_signal[spi_strip->spi_host].spid_out, true, false);
+    }
+
+    spi_device_interface_config_t spi_dev_cfg = {
+        .clock_source = clk_src,
+        .command_bits = 0,
+        .address_bits = 0,
+        .dummy_bits = 0,
+        .clock_speed_hz = LED_STRIP_SPI_DEFAULT_RESOLUTION,
+        .mode = 0,
+        //set -1 when CS is not used
+        .spics_io_num = -1,
+        .queue_size = LED_STRIP_SPI_DEFAULT_TRANS_QUEUE_SIZE,
+    };
+
+    ESP_GOTO_ON_ERROR(spi_bus_add_device(spi_strip->spi_host, &spi_dev_cfg, &spi_strip->spi_device), err, TAG, "Failed to add spi device");
+    //ensure the reset time is enough
+    esp_rom_delay_us(10);
+    int clock_resolution_khz = 0;
+    spi_device_get_actual_freq(spi_strip->spi_device, &clock_resolution_khz);
+    // TODO: ideally we should decide the SPI_BYTES_PER_COLOR_BYTE by the real clock resolution
+    // But now, let's fixed the resolution, the downside is, we don't support a clock source whose frequency is not multiple of LED_STRIP_SPI_DEFAULT_RESOLUTION
+    // clock_resolution between 2.2MHz to 2.8MHz is supported
+    ESP_GOTO_ON_FALSE((clock_resolution_khz < LED_STRIP_SPI_DEFAULT_RESOLUTION / 1000 + 300) && (clock_resolution_khz > LED_STRIP_SPI_DEFAULT_RESOLUTION / 1000 - 300), ESP_ERR_NOT_SUPPORTED, err,
+                      TAG, "unsupported clock resolution:%dKHz", clock_resolution_khz);
+
+    if (led_config->led_model != LED_MODEL_WS2812) {
+        ESP_LOGW(TAG, "Only support WS2812. The timing requirements for other models may not be met");
+    }
+
+    spi_strip->component_fmt = component_fmt;
+    spi_strip->bytes_per_pixel = bytes_per_pixel;
+    spi_strip->strip_len = led_config->max_leds;
+    spi_strip->base.set_pixel = led_strip_spi_set_pixel;
+    spi_strip->base.set_pixel_rgbw = led_strip_spi_set_pixel_rgbw;
+    spi_strip->base.refresh = led_strip_spi_refresh;
+    spi_strip->base.clear = led_strip_spi_clear;
+    spi_strip->base.del = led_strip_spi_del;
+
+    *ret_strip = &spi_strip->base;
+    return ESP_OK;
+err:
+    if (spi_strip) {
+        if (spi_strip->spi_device) {
+            spi_bus_remove_device(spi_strip->spi_device);
+        }
+        if (spi_strip->spi_host) {
+            spi_bus_free(spi_strip->spi_host);
+        }
+        free(spi_strip);
+    }
+    return ret;
+}

software/blink/pytest_blink.py

@@ -0,0 +1,17 @@
+# SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: CC0-1.0
+import logging
+import os
+
+import pytest
+from pytest_embedded_idf.dut import IdfDut
+from pytest_embedded_idf.utils import idf_parametrize
+
+
+@pytest.mark.generic
+@idf_parametrize('target', ['supported_targets'], indirect=['target'])
+def test_blink(dut: IdfDut) -> None:
+    # check and log bin size
+    binary_file = os.path.join(dut.app.binary_path, 'blink.bin')
+    bin_size = os.path.getsize(binary_file)
+    logging.info(f'blink_bin_size : {bin_size // 1024}KB')

software/blink/sdkconfig.defaults

@@ -0,0 +1,2 @@
+CONFIG_BLINK_LED_GPIO=y
+CONFIG_BLINK_GPIO=8

software/blink/sdkconfig.defaults.esp32

@@ -0,0 +1 @@
+CONFIG_BLINK_GPIO=5

software/blink/sdkconfig.defaults.esp32s3

@@ -0,0 +1,7 @@
+CONFIG_BLINK_LED_STRIP=y
+#
+# Please Note:
+# ESP32-S3-DevKitC v1.1 uses GPIO38 for the on-board LED
+# ESP32-S3-DevKitC v1.0 uses GPIO48 for the on-board LED
+#
+CONFIG_BLINK_GPIO=38

software/hello_world/CMakeLists.txt

@@ -0,0 +1,8 @@
+# The following lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.22)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
+idf_build_set_property(MINIMAL_BUILD ON)
+project(hello_world)

software/hello_world/README.md

@@ -0,0 +1,53 @@
+| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-H21 | ESP32-H4 | ESP32-P4 | ESP32-S2 | ESP32-S3 | ESP32-S31 | Linux |
+| ----------------- | ----- | -------- | -------- | -------- | -------- | --------- | -------- | --------- | -------- | -------- | -------- | -------- | --------- | ----- |
+
+# Hello World Example
+
+Starts a FreeRTOS task to print "Hello World".
+
+(See the README.md file in the upper level 'examples' directory for more information about examples.)
+
+## How to use example
+
+Follow detailed instructions provided specifically for this example.
+
+Select the instructions depending on Espressif chip installed on your development board:
+
+- [ESP32 Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/stable/get-started/index.html)
+- [ESP32-S2 Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/get-started/index.html)
+
+
+## Example folder contents
+
+The project **hello_world** contains one source file in C language [hello_world_main.c](main/hello_world_main.c). The file is located in folder [main](main).
+
+ESP-IDF projects are built using CMake. The project build configuration is contained in `CMakeLists.txt` files that provide set of directives and instructions describing the project's source files and targets (executable, library, or both).
+
+Below is short explanation of remaining files in the project folder.
+
+```
+├── CMakeLists.txt
+├── pytest_hello_world.py      Python script used for automated testing
+├── main
+│   ├── CMakeLists.txt
+│   └── hello_world_main.c
+└── README.md                  This is the file you are currently reading
+```
+
+For more information on structure and contents of ESP-IDF projects, please refer to Section [Build System](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/build-system.html) of the ESP-IDF Programming Guide.
+
+## Troubleshooting
+
+* Program upload failure
+
+    * Hardware connection is not correct: run `idf.py -p PORT monitor`, and reboot your board to see if there are any output logs.
+    * The baud rate for downloading is too high: lower your baud rate in the `menuconfig` menu, and try again.
+
+## Technical support and feedback
+
+Please use the following feedback channels:
+
+* For technical queries, go to the [esp32.com](https://esp32.com/) forum
+* For a feature request or bug report, create a [GitHub issue](https://github.com/espressif/esp-idf/issues)
+
+We will get back to you as soon as possible.

software/hello_world/main/CMakeLists.txt

@@ -0,0 +1,3 @@
+idf_component_register(SRCS "hello_world_main.c"
+                       PRIV_REQUIRES spi_flash
+                       INCLUDE_DIRS "")

software/hello_world/main/hello_world_main.c

@@ -0,0 +1,52 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include "sdkconfig.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_chip_info.h"
+#include "esp_flash.h"
+#include "esp_system.h"
+
+
+void app_main(void)
+{
+    printf("Hello world!\n");
+
+    /* Print chip information */
+    esp_chip_info_t chip_info;
+    uint32_t flash_size;
+    esp_chip_info(&chip_info);
+    printf("This is %s chip with %d CPU core(s), %s%s%s%s, ",
+           CONFIG_IDF_TARGET,
+           chip_info.cores,
+           (chip_info.features & CHIP_FEATURE_WIFI_BGN) ? "WiFi/" : "",
+           (chip_info.features & CHIP_FEATURE_BT) ? "BT" : "",
+           (chip_info.features & CHIP_FEATURE_BLE) ? "BLE" : "",
+           (chip_info.features & CHIP_FEATURE_IEEE802154) ? ", 802.15.4 (Zigbee/Thread)" : "");
+
+    unsigned major_rev = chip_info.revision / 100;
+    unsigned minor_rev = chip_info.revision % 100;
+    printf("silicon revision v%d.%d, ", major_rev, minor_rev);
+    if(esp_flash_get_size(NULL, &flash_size) != ESP_OK) {
+        printf("Get flash size failed");
+        return;
+    }
+
+    printf("%" PRIu32 "MB %s flash\n", flash_size / (uint32_t)(1024 * 1024),
+           (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
+
+    printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
+
+    for (int i = 10; i >= 0; i--) {
+        printf("Restarting in %d seconds...\n", i);
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+    }
+    printf("Restarting now.\n");
+    fflush(stdout);
+
+    esp_restart();
+}
+
+
+

software/hello_world/main/idf_component.yml

@@ -0,0 +1,2 @@
+dependencies:
+  espressif/led_strip: "^3.0.0"