she blinks

STM32G431CBTx_FLASH.ld

@@ -1,165 +0,0 @@
-/*
-******************************************************************************
-**
-
-**  File        : LinkerScript.ld
-**
-**  Author		: STM32CubeMX
-**
-**  Abstract    : Linker script for STM32G431CBTx series
-**                112Kbytes FLASH and 32Kbytes RAM
-**
-**                Set heap size, stack size and stack location according
-**                to application requirements.
-**
-**                Set memory bank area and size if external memory is used.
-**
-**  Target      : STMicroelectronics STM32
-**
-**  Distribution: The file is distributed “as is,” without any warranty
-**                of any kind.
-**
-*****************************************************************************
-** @attention
-**
-** <h2><center>&copy; COPYRIGHT(c) 2019 STMicroelectronics</center></h2>
-**
-** Redistribution and use in source and binary forms, with or without modification,
-** are permitted provided that the following conditions are met:
-**   1. Redistributions of source code must retain the above copyright notice,
-**      this list of conditions and the following disclaimer.
-**   2. Redistributions in binary form must reproduce the above copyright notice,
-**      this list of conditions and the following disclaimer in the documentation
-**      and/or other materials provided with the distribution.
-**   3. Neither the name of STMicroelectronics nor the names of its contributors
-**      may be used to endorse or promote products derived from this software
-**      without specific prior written permission.
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-** DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-**
-*****************************************************************************
-*/
-
-/* Entry Point */
-ENTRY(Reset_Handler)
-
-/* Generate a link error if heap and stack don't fit into RAM */
-_Min_Heap_Size = 0x200;      /* required amount of heap  */
-_Min_Stack_Size = 0x400; /* required amount of stack */
-
-/* Specify the memory areas */
-MEMORY
-{
-RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 32K
-FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 112K
-}
-
-/* _estack = ORIGIN(RAM) + LENGTH(RAM); */
-_estack = 0x20008000;
-
-
-
-/* Highest address of the user mode stack */
-
-
-/* Define output sections */
-SECTIONS
-{
-  /* The startup code goes first into FLASH */
-  .isr_vector :
-  {
-    . = ALIGN(4);
-    KEEP(*(.isr_vector)) /* Startup code */
-    . = ALIGN(4);
-  } >FLASH
-
-  /* The program code and other data goes into FLASH */
-  .text :
-  {
-    . = ALIGN(4);
-    *(.text)           /* .text sections (code) */
-    *(.text*)          /* .text* sections (code) */
-    *(.glue_7)         /* glue arm to thumb code */
-    *(.glue_7t)        /* glue thumb to arm code */
-    *(.eh_frame)
-
-    KEEP (*(.init))
-    KEEP (*(.fini))
-
-    . = ALIGN(4);
-    _etext = .;        /* define a global symbols at end of code */
-  } >FLASH
-
-  /* Constant data goes into FLASH */
-  .rodata :
-  {
-    . = ALIGN(4);
-    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
-    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
-    . = ALIGN(4);
-  } >FLASH
-
-  /* used by the startup to initialize data */
-  _sidata = LOADADDR(.data);
-
-  /* Initialized data sections goes into RAM, load LMA copy after code */
-  .data : 
-  {
-    . = ALIGN(4);
-    _sdata = .;        /* create a global symbol at data start */
-    *(.data)           /* .data sections */
-    *(.data*)          /* .data* sections */
-
-    . = ALIGN(4);
-    _edata = .;        /* define a global symbol at data end */
-  } >RAM AT> FLASH
-
-  
-  /* Uninitialized data section */
-  . = ALIGN(4);
-  .bss :
-  {
-    /* This is used by the startup in order to initialize the .bss secion */
-    _sbss = .;         /* define a global symbol at bss start */
-    __bss_start__ = _sbss;
-    *(.bss)
-    *(.bss*)
-    *(COMMON)
-
-    . = ALIGN(4);
-    _ebss = .;         /* define a global symbol at bss end */
-    __bss_end__ = _ebss;
-  } >RAM
-
-  /* User_heap_stack section, used to check that there is enough RAM left */
-  ._user_heap_stack :
-  {
-    . = ALIGN(8);
-    PROVIDE ( end = . );
-    PROVIDE ( _end = . );
-    . = . + _Min_Heap_Size;
-    . = . + _Min_Stack_Size;
-    . = ALIGN(8);
-  } >RAM
-
-  
-
-  /* Remove information from the standard libraries */
-  /DISCARD/ :
-  {
-    libc.a ( * )
-    libm.a ( * )
-    libgcc.a ( * )
-  }
-
-  .ARM.attributes 0 : { *(.ARM.attributes) }
-}

build.zig

@@ -4,6 +4,7 @@ pub fn build(b: *std.Build) void {
     const optimize = b.standardOptimizeOption(.{
         .preferred_optimize_mode = .ReleaseSmall,
     });
+
     const target = b.resolveTargetQuery(.{
         .cpu_arch = .thumb,
         .cpu_model = .{
@@ -13,26 +14,54 @@ pub fn build(b: *std.Build) void {
         .abi = .eabihf,
     });
 
-    // const mod = b.addModule("zig_stm32g4_test", .{
-    //     .root_source_file = b.path("src/root.zig"),
-    //     .target = target,
-    // });
-
-    const exe = b.addExecutable(.{
-        .name = "zig_stm32g4_test",
-        .root_module = b.createModule(.{
+    const main_mod = b.addModule("Main", .{
         .root_source_file = b.path("src/main.zig"),
         .target = target,
         .optimize = optimize,
-        }),
+        .link_libc = false,
+        .strip = false,
+        .single_threaded = true,
     });
+
+    const mcu_mod = b.addModule("Mcu", .{
+        .root_source_file = b.path("src/microcontroller/mcu.zig"),
+        .target = target,
+        .optimize = optimize,
+        .link_libc = false,
+        .strip = false,
+        .single_threaded = true,
+    });
+
+    const stm32G4_mod = b.addModule("main", .{
+        .root_source_file = b.path("src/microcontroller/stm32g4/startup.zig"),
+        .target = target,
+        .optimize = optimize,
+        .link_libc = false,
+        .strip = false,
+        .single_threaded = true,
+    });
+
+    stm32G4_mod.addImport("Mcu", mcu_mod);
+    mcu_mod.addImport("Stm32g4", stm32G4_mod);
+    main_mod.addImport("Mcu", mcu_mod);
+
+    const exe = b.addExecutable(.{
+        .name = "zig_stm32g4_test",
+        .linkage = .static,
+        .use_lld = true,
+        .use_llvm = true,
+        .root_module = stm32G4_mod,
+    });
+
     exe.dead_strip_dylibs = true;
     exe.link_gc_sections = true;
     exe.link_function_sections = true;
     exe.link_data_sections = true;
-    exe.lto = .full;
+    exe.lto = .none;
     exe.discard_local_symbols = true;
 
+    exe.root_module.addImport("Main", main_mod);
+
     const bin = exe.addObjCopy(.{ .format = .bin });
     const install_exe = b.addInstallArtifact(exe, .{});
     const install_bin = b.addInstallBinFile(bin.getOutput(), bin.basename);
@@ -42,9 +71,24 @@ pub fn build(b: *std.Build) void {
     install_bin.step.dependOn(&install_exe.step);
 
     b.installArtifact(exe);
-    // const run_step = b.step("run", "Run the app");
+    const flash_run = b.addSystemCommand(&.{
+        "openocd",
+        "-f",
+        "/usr/share/openocd/scripts/board/st_nucleo_g4.cfg",
+        "-c",
+        "init",
+        "-c",
+        "reset halt; flash write_image erase zig-out/bin/zig_stm32g4_test.bin 0x08000000 bin",
+        "-c",
+        "flash verify_image zig-out/bin/zig_stm32g4_test.bin 0x08000000 bin",
+        "-c",
+        "reset run; shutdown",
+    });
+    const flash_step = b.step("flash", "Flash the code to the target");
+
+    flash_run.step.dependOn(&install_bin.step);
+    flash_step.dependOn(&flash_run.step);
 
-    // const run_cmd = b.addRunArtifact(exe);
     // run_step.dependOn(&run_cmd.step);
 
     // run_cmd.step.dependOn(b.getInstallStep());

src/main.zig

@@ -1,59 +1,21 @@
-const std = @import("std");
-const Io = std.Io;
-
-export fn resetHandler() callconv(.c) void {
-    _start();
-}
-
-export fn _start() void {
-    
-    
-    // const io = std.Io{
-    //     .vtable   
-    // };
-    
-    
-    try main(undefined);
+const Mcu = @import("Mcu").Mcu;
 
+pub fn main(mcu: Mcu) !void {
+    _ = mcu;
 
+    Mcu.peripherals.RCC.RCC_AHB2ENR.write(.{ .GPIOAEN = .B_0x1 });
 
+    Mcu.peripherals.GPIOA.MODER.write(.{ .MODER5 = 0b01 });
 
+    Mcu.peripherals.GPIOA.ODR.write(.{ .ODR5 = 1 });
 
+    var toggle: u1 = 1;
     while (true) {
-        asm volatile ("nop");
-    }
-}
-
-pub fn main(init: std.process.Init) !void {
-    _ = init;
+        for (0..1000000) |_| {
             asm volatile ("nop");
         }
 
-export fn nmiHandler() callconv(.c) void {}
-export fn hardFaultHandler() callconv(.c) void {}
-export fn memManageHandler() callconv(.c) void {}
-export fn busFaultHandler() callconv(.c) void {}
-export fn usageFaultHandler() callconv(.c) void {}
-export fn svCallHandler() callconv(.c) void {}
-export fn debugMonitorHandler() callconv(.c) void {}
-export fn pendSvHandler() callconv(.c) void {}
-export fn sysTickHandler() callconv(.c) void {}
-
-export const vectors linksection(".vectors") = [_]?*const fn () callconv(.c) void{
-    resetHandler,
-    nmiHandler,
-    hardFaultHandler,
-    memManageHandler,
-    busFaultHandler,
-    usageFaultHandler,
-    null, // reserved
-    null, // reserved
-    null, // reserved
-    null, // reserved
-    svCallHandler,
-    debugMonitorHandler,
-    null, // reserved
-    pendSvHandler,
-    sysTickHandler,
-    // -- snip: continued for MCU-specific interrupts; consult datasheet
-};
+        Mcu.peripherals.GPIOA.ODR.write(.{ .ODR5 = toggle });
+        if (toggle == 1) toggle = 0 else toggle = 1;
+    }
+}

src/microcontroller/mcu.zig

@@ -0,0 +1,6 @@
+const stm32g4 = @import("Stm32g4");
+
+pub const Mcu = struct {
+    pub const peripherals = stm32g4.stm32g4.peripherals;
+    isr_vectors: *stm32g4.VectorTable,
+};

src/microcontroller/stm32g4/STM32G431.zig

@@ -1,6 +1,6 @@
 //! Description for STM32G431
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("mmio.zig").mmio;
+const InterruptHandle = @import("interrupt.zig").InterruptHandle;
 
 pub const types = @import("types.zig");
 
@@ -124,10 +124,9 @@ pub const interrupts: []const Interrupt = &.{
 };
 
 pub const VectorTable = extern struct {
-    const Handler = microzig.interrupt.Handler;
-    const unhandled = microzig.interrupt.unhandled;
+    const Handler = InterruptHandle;
+    const unhandled = InterruptHandle.unhandled;
 
-    initial_stack_pointer: *const anyopaque,
     Reset: Handler,
     NMI: Handler = unhandled,
     HardFault: Handler = unhandled,

src/microcontroller/stm32g4/interrupt.zig

@@ -0,0 +1,9 @@
+fn unhandledInterrupt() callconv(.c) void {}
+
+pub const InterruptHandle = extern struct {
+    func: *const fn () callconv(.c) void,
+
+    pub const unhandled = InterruptHandle{
+        .func = &unhandledInterrupt,
+    };
+};

src/microcontroller/stm32g4/mmio.zig

@@ -0,0 +1,100 @@
+//! yoniked https://github.com/ZigEmbeddedGroup/microzig/blob/main/core/src/mmio.zig
+//!
+
+const std = @import("std");
+const assert = std.debug.assert;
+
+pub fn Mmio(comptime Packed: type) type {
+    @setEvalBranchQuota(2_000);
+
+    const size = @bitSizeOf(Packed);
+    if ((size % 8) != 0)
+        @compileError("size must be divisible by 8!");
+
+    if (!std.math.isPowerOfTwo(size / 8))
+        @compileError("size must encode a power of two number of bytes!");
+
+    const Int = @Int(.unsigned, size);
+
+    if (@sizeOf(Packed) != (size / 8))
+        @compileError(std.fmt.comptimePrint("Int and Packed must have the same size!, they are {} and {} bytes respectively", .{ size / 8, @sizeOf(Packed) }));
+
+    return packed struct(Int) {
+        const Self = @This();
+
+        raw: Int,
+
+        pub const underlying_type = Packed;
+
+        pub inline fn read(addr: *volatile Self) Packed {
+            return @bitCast(addr.raw);
+        }
+
+        pub inline fn write(addr: *volatile Self, val: Packed) void {
+            comptime {
+                assert(@bitSizeOf(Packed) == @bitSizeOf(Int));
+            }
+            addr.writeRaw(@bitCast(val));
+        }
+
+        pub inline fn writeRaw(addr: *volatile Self, val: Int) void {
+            addr.raw = val;
+        }
+
+        /// Set field `field_name` of this register to `value`.
+        /// A one-field version of modify(), more helpful if `field_name` is comptime calculated.
+        pub inline fn modifyOne(addr: *volatile Self, comptime field_name: []const u8, value: @FieldType(underlying_type, field_name)) void {
+            var val = read(addr);
+            @field(val, field_name) = value;
+            write(addr, val);
+        }
+
+        /// For each `.Field = value` entry of `fields`:
+        /// Set field `Field` of this register to `value`.
+        pub inline fn modify(addr: *volatile Self, fields: anytype) void {
+            var val = read(addr);
+            inline for (@typeInfo(@TypeOf(fields)).@"struct".field_names) |field_name| {
+                @field(val, field_name) = @field(fields, field_name);
+            }
+            write(addr, val);
+        }
+
+        /// In field `field_name` of struct `val`, toggle (only) all bits that are set in `value`.
+        inline fn toggleField(val: anytype, comptime field_name: []const u8, value: anytype) void {
+            const FieldType = @TypeOf(@field(val, field_name));
+            switch (@typeInfo(FieldType)) {
+                .int => {
+                    @field(val, field_name) = @field(val, field_name) ^ value;
+                },
+                .@"enum" => |enum_info| {
+                    // same as for the .Int case, but casting to and from the u... tag type U of the enum FieldType
+                    const U = enum_info.tag_type;
+                    @field(val, field_name) =
+                        @as(FieldType, @enumFromInt(@as(U, @intFromEnum(@field(val, field_name))) ^
+                            @as(U, @intFromEnum(@as(FieldType, value)))));
+                },
+                else => |T| {
+                    @compileError("unsupported register field type '" ++ @typeName(T) ++ "'");
+                },
+            }
+        }
+
+        /// In field `field_name` of this register, toggle (only) all bits that are set in `value`.
+        /// A one-field version of toggle(), more helpful if `field_name` is comptime calculated.
+        pub inline fn toggleOne(addr: *volatile Self, comptime field_name: []const u8, value: anytype) void {
+            var val = read(addr);
+            toggleField(&val, field_name, value);
+            write(addr, val);
+        }
+
+        /// For each `.Field = value` entry of `fields`:
+        /// In field `F` of this register, toggle (only) all bits that are set in `value`.
+        pub inline fn toggle(addr: *volatile Self, fields: anytype) void {
+            var val = read(addr);
+            inline for (@typeInfo(@TypeOf(fields)).@"struct".field_names) |field_name| {
+                toggleField(&val, field_name, @field(fields, field_name));
+            }
+            write(addr, val);
+        }
+    };
+}

src/microcontroller/stm32g4/startup.zig

@@ -0,0 +1,47 @@
+pub const VectorTable = @import("STM32G431.zig").VectorTable;
+pub const InterruptHandle = @import("interrupt.zig").InterruptHandle;
+pub const stm32g4 = @import("STM32G431.zig");
+
+const Mcu = @import("Mcu").Mcu;
+
+const main = @import("Main").main;
+
+export fn resetHandler() callconv(.c) void {
+    _start();
+}
+
+pub export var vectors linksection(".vectors") = VectorTable{
+    .Reset = InterruptHandle{ .func = &resetHandler },
+};
+
+extern var _szero: u32;
+extern var _ezero: u32;
+extern var _sdata: u32;
+extern var _edata: u32;
+extern var _ldata: u32;
+export fn _start() callconv(.c) void {
+    const szero: [*]u8 = @ptrCast(&_szero);
+    const sdata: [*]u8 = @ptrCast(&_sdata);
+    const ldata: [*]u8 = @ptrCast(&_ldata);
+
+    const bss_len = @intFromPtr(&_ezero) - @intFromPtr(&_szero);
+    if (bss_len > 0) {
+        @memset(szero[0..bss_len], 0);
+    }
+
+    const data_len = @intFromPtr(&_edata) - @intFromPtr(&_sdata);
+    if (data_len > 0) {
+        @memcpy(sdata[0..data_len], ldata[0..data_len]);
+    }
+
+    // @compileLog(@typeInfo(Mcu));
+    const mcu = Mcu{
+        .isr_vectors = &vectors,
+    };
+    main(mcu) catch {};
+
+    // put error code in here
+    while (true) {
+        asm volatile ("nop");
+    }
+}

src/microcontroller/stm32g4/types/peripherals/ADC1.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/ADC12_Common.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/AES.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/COMP.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Comparator control and status register

src/microcontroller/stm32g4/types/peripherals/CORDIC.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/CRC.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/CRS.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/DAC1.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/DBGMCU.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/DMA1.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/DMAMUX.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// DMAMUX

src/microcontroller/stm32g4/types/peripherals/EXTI.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/FDCAN.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/FLASH.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Flash

src/microcontroller/stm32g4/types/peripherals/FMAC.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/GPIOA.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/GPIOB.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/GPIOC.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/I2C1.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/IWDG.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/LPTIM1.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Low power timer

src/microcontroller/stm32g4/types/peripherals/LPUART1.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Universal synchronous asynchronous receiver transmitter

src/microcontroller/stm32g4/types/peripherals/OPAMP.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/PWR.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/RCC.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/RNG.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/RTC.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/SAI.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Serial audio interface

src/microcontroller/stm32g4/types/peripherals/SPI1.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/SYSCFG.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/TAMP.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/TIM1.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Advanced-timers

src/microcontroller/stm32g4/types/peripherals/TIM15.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/TIM16.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// General purpose timers

src/microcontroller/stm32g4/types/peripherals/TIM2.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Advanced-timers

src/microcontroller/stm32g4/types/peripherals/TIM3.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/TIM6.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/UART4.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/UCPD1.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/USART1.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Universal synchronous asynchronous receiver transmitter

src/microcontroller/stm32g4/types/peripherals/USB_FS_device.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/microcontroller/stm32g4/types/peripherals/VREFBUF.zig

@@ -1,6 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
-
+const mmio = @import("../../mmio.zig");
 const types = @import("../../types.zig");
 
 /// Voltage reference buffer

src/microcontroller/stm32g4/types/peripherals/WWDG.zig

@@ -1,5 +1,4 @@
-const microzig = @import("microzig");
-const mmio = microzig.mmio;
+const mmio = @import("../../mmio.zig");
 
 const types = @import("../../types.zig");
 

src/root.zig

@@ -1,18 +0,0 @@
-// //! By convention, root.zig is the root source file when making a package.
-// const std = @import("std");
-// const Io = std.Io;
-
-// /// This is a documentation comment to explain the `printAnotherMessage` function below.
-// ///
-// /// Accepting an `Io.Writer` instance is a handy way to write reusable code.
-// pub fn printAnotherMessage(writer: *Io.Writer) Io.Writer.Error!void {
-//     try writer.print("Run `zig build test` to run the tests.\n", .{});
-// }
-
-// pub fn add(a: i32, b: i32) i32 {
-//     return a + b;
-// }
-
-// test "basic add functionality" {
-//     try std.testing.expect(add(3, 7) == 10);
-// }

stm32g431cbtx.ld

@@ -2,7 +2,6 @@ FLASH_SIZE = 0x1b580; /* 112k flash */
 SRAM_SIZE = 0x8000; /* 32k sram */
 STACK_SIZE = 0x400; /* 1k stack */
 
-
 ENTRY(resetHandler)
 
 MEMORY
@@ -33,7 +32,6 @@ SECTIONS
         __initial_stack_pointer = .;
     } > sram
 
-
     .data :
     {
         _sdata = .;
@@ -41,7 +39,7 @@ SECTIONS
         *(.data*)
         . = ALIGN(4);
         _edata = .;
-    } > sram AT> flash
+    } > sram
 
     _ldata = LOADADDR(.data);