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kirl committed 2026-07-27 20:00:06 +08:00
commit a1cbf4a3c3
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.clangd
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CompileFlags:
# 指向 build 目录中的 compile_commands.json
CompilationDatabase: build/
# 移除 clang 不认识的 GCC 特有参数
Remove:
- -gstrict-dwarf
Diagnostics:
# 抑制嵌入式代码中常见的 unwanted 警告
Suppress:
- unused-parameter
- missing-prototypes
- redundant-decls
Index:
# 后台索引线程数
Background: Build
Completion:
AllScopes: true
.gitignore
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# 构建目录
build/
# 缓存目录
.cache/
.vscode/launch.json
Vendored
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{
"version": "0.2.0",
"configurations": [
{
"name": "MSPM0G3507 Debug",
"type": "cortex-debug",
"request": "launch",
"cwd": "${workspaceFolder}",
"executable": "${workspaceFolder}/build/blink.elf",
"servertype": "external",
"gdbTarget": "localhost:3333",
"device": "MSPM0G3507",
"runToEntryPoint": "main",
"preLaunchTask": "Start pyOCD Server"
}
]
}
.vscode/settings.json
Vendored
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{
"cmake.configureArgs": [
"-DCMAKE_TOOLCHAIN_FILE=${workspaceFolder}/gcc-arm-none-eabi.cmake",
"-DCMAKE_EXPORT_COMPILE_COMMANDS=ON"
],
"cmake.buildDirectory": "${workspaceFolder}/build",
"cmake.generator": "Ninja"
}
.vscode/tasks.json
Vendored
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{
"version": "2.0.0",
"tasks": [
{
"label": "Start pyOCD Server",
"type": "shell",
"command": "powershell",
"args": ["-ExecutionPolicy", "Bypass", "-File", "${workspaceFolder}/start_pyocd.ps1"],
"isBackground": true,
"problemMatcher": {
"owner": "pyocd",
"pattern": { "regexp": "." },
"background": {
"activeOnStart": true,
"beginsPattern": ".",
"endsPattern": "GDB server listening on port"
}
}
},
{
"label": "Configure",
"type": "process",
"command": "cmake",
"args": ["-G", "Ninja", "-S", "${workspaceFolder}", "-B", "${workspaceFolder}/build", "-DCMAKE_TOOLCHAIN_FILE=gcc-arm-none-eabi.cmake", "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON"],
"problemMatcher": []
},
{
"label": "Build",
"type": "shell",
"command": "ninja",
"args": ["-C", "build"],
"group": { "kind": "build", "isDefault": true },
"dependsOn": ["Configure"],
"problemMatcher": []
},
{
"label": "Flash",
"type": "shell",
"command": "python",
"args": ["-m", "pyocd", "flash", "-t", "mspm0g3507", "${workspaceFolder}/build/blink.elf"],
"problemMatcher": []
},
{
"label": "Build & Flash",
"dependsOrder": "sequence",
"dependsOn": ["Build", "Flash"],
"problemMatcher": []
}
]
}
CMakeLists.txt
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cmake_minimum_required(VERSION 3.20)
# 跳过编译器链接测试（裸机 ARM 无系统调用 _exit/_sbrk 等）
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
project(blink C)
# 输出固件带 .elf 后缀，pyOCD 自动识别格式
set(CMAKE_EXECUTABLE_SUFFIX ".elf")
set(SDK_DIR "C:/ti/mspm0_sdk_2_11_00_07")
set(SYSCONFIG_CLI "C:/ti/sysconfig_1.28.0/sysconfig_cli.bat")
set(DEVICE "MSPM0G350X")
set(PACKAGE "LQFP-64(PM)")
# ── SysConfig code generation ──────────────────────────────────────
set(SYSCFG_OUTPUT_DIR "${CMAKE_BINARY_DIR}/syscfg")
add_custom_command(
OUTPUT
"${SYSCFG_OUTPUT_DIR}/ti_msp_dl_config.c"
"${SYSCFG_OUTPUT_DIR}/ti_msp_dl_config.h"
"${SYSCFG_OUTPUT_DIR}/device_linker.lds"
"${SYSCFG_OUTPUT_DIR}/device.opt"
"${SYSCFG_OUTPUT_DIR}/device.lds.genlibs"
COMMAND cmd /c "${SYSCONFIG_CLI}"
--compiler gcc
--product "${SDK_DIR}/.metadata/product.json"
--device "${DEVICE}"
--package "${PACKAGE}"
--output "${SYSCFG_OUTPUT_DIR}"
"${CMAKE_SOURCE_DIR}/blink.syscfg"
DEPENDS "${CMAKE_SOURCE_DIR}/blink.syscfg"
COMMENT "Running SysConfig..."
)
# ── Source files ────────────────────────────────────────────────────
set(GEN_DIR ${SYSCFG_OUTPUT_DIR})
add_executable(${PROJECT_NAME}
src/main.c
"${GEN_DIR}/ti_msp_dl_config.c"
"${SDK_DIR}/source/ti/devices/msp/m0p/startup_system_files/gcc/startup_mspm0g350x_gcc.c"
)
# SysConfig outputs are dependencies
add_dependencies(${PROJECT_NAME} syscfg_gen)
add_custom_target(syscfg_gen DEPENDS "${GEN_DIR}/ti_msp_dl_config.c")
# ── Include directories ─────────────────────────────────────────────
target_include_directories(${PROJECT_NAME} PRIVATE
"${CMAKE_SOURCE_DIR}/include"
"${CMAKE_SOURCE_DIR}/src"
"${GEN_DIR}"
"${SDK_DIR}/source"
"${SDK_DIR}/source/third_party/CMSIS/Core/Include"
)
# ── Compile definitions & flags ─────────────────────────────────────
target_compile_definitions(${PROJECT_NAME} PRIVATE
__MSPM0G3507__
__USE_SYSCONFIG__
)
target_compile_options(${PROJECT_NAME} PRIVATE
-mcpu=cortex-m0plus
-march=armv6-m
-mthumb
-mfloat-abi=soft
-std=c99
-O2
-ffunction-sections
-fdata-sections
-g
-Wall
-gstrict-dwarf
)
# ── Linker flags ────────────────────────────────────────────────────
# Override SysConfig's linker script with G3507 (128KB Flash / 32KB SRAM)
set(LINKER_SCRIPT "${SDK_DIR}/source/ti/devices/msp/m0p/linker_files/gcc/mspm0g3507.lds")
target_link_options(${PROJECT_NAME} PRIVATE
-mcpu=cortex-m0plus
-march=armv6-m
-mthumb
-mfloat-abi=soft
-nostartfiles
-static
-Wl,--gc-sections
-Wl,-Map,${PROJECT_NAME}.map
-T${LINKER_SCRIPT}
-T${GEN_DIR}/device.lds.genlibs
-L${SDK_DIR}/source
--specs=nano.specs
--specs=nosys.specs
-lgcc
-lc
-lm
)
README.md
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# MSPM0G3507 LED Blink
基于 TI MSPM0G3507 的 LED 闪烁项目，纯命令行工具链（ARM GCC + CMake + Ninja + pyOCD），不依赖任何 IDE。
## 硬件
| 项目 | 说明 |
|------|------|
| 芯片 | MSPM0G3507 (Cortex-M0+, 80MHz, 128KB Flash / 32KB SRAM) |
| 调试器 | 通用 DAPLink / CMSIS-DAP |
| LED | PB9，低有效（低电平点亮） |
## 开发环境
| 工具 | 版本 | 用途 |
|------|------|------|
| arm-none-eabi-gcc | 15.2+ | 交叉编译器 |
| CMake | 3.20+ | 构建系统 |
| Ninja | 1.10+ | 构建后端 |
| Python | 3.10+ | pyOCD 运行环境 |
| pyOCD | 0.45+ | 烧录与调试 |
| SysConfig | 1.28+ | 引脚/时钟配置生成 |
| clangd | 18+ | LSP 语言服务器 (IntelliSense) |
| MSPM0 SDK | 2.11+ | 驱动库与启动文件 |
### 快速安装
```powershell
# pyOCD（含 MSPM0 Flash 算法）
pip install pyocd
python -m pyocd pack install MSPM0G3507
```
MSPM0 SDK 和 SysConfig 需从 [TI 官网](https://www.ti.com/tool/MSPM0-SDK) 下载安装。
## 构建
```powershell
# 配置（首次或 CMakeLists.txt 变更后）
# PowerShell 中 .cmake 需引号包裹，否则会被拆开
cmake -G Ninja -S . -B build "-DCMAKE_TOOLCHAIN_FILE=gcc-arm-none-eabi.cmake" -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
# 编译
ninja -C build
# 或 cd 进 build 目录后直接
cd build
ninja
```
### LSP / IntelliSense (clangd)
项目根目录已配置 `.clangd`，指向 `build/compile_commands.json`。
安装 VS Code 扩展 **clangd**（LLVM 官方）并**禁用** Microsoft C/C++ IntelliSense 即可使用。
## 烧录
一条命令搞定（自动连接、擦除、写入、校验、断开）：
```powershell
python -m pyocd flash -t mspm0g3507 build/blink.elf
```
输出示例：
```
Erased 1024 bytes (1 sector), programmed 1024 bytes (1 page)
```
## 调试（GDB）
需要两个终端协作，**先启动服务器再连 GDB**：
```powershell
# 终端 1：启动 GDB 服务器（保持运行）
# DAPLink 克隆版建议降频避免通信错误
python -m pyocd gdbserver -t mspm0g3507 -f 500000
# 等看到 "GDB server listening on port 3333" 后，
# 终端 2：启动 GDB
arm-none-eabi-gdb build/blink.elf
```
GDB 内手动连接：
```gdb
target remote :3333 # 连接 pyOCD 服务器
load # 烧录固件
monitor reset # 复位芯片
continue # 开始运行
```
常用命令：
```gdb
# ── 断点 ──────────────────────────
break main # main 函数入口断点
break src/main.c:20 # 文件行号断点
info breakpoints # 列出所有断点
delete 1 # 删除 1 号断点
# ── 运行 ──────────────────────────
monitor reset # 复位芯片
continue (缩写 c) # 继续运行
step (缩写 s) # 单步进入函数
next (缩写 n) # 单步跳过函数
finish (缩写 fin) # 执行到当前函数返回
# ── 查看 ──────────────────────────
print DELAY # 查看变量/宏
print/x GPIO_LED_LED_PIN # 十六进制查看
backtrace (缩写 bt) # 调用栈
info registers # 寄存器
# ── 退出 ──────────────────────────
quit # 退出 GDB
```
### 典型调试流程
```gdb
target remote :3333
load
break main
monitor reset
continue
# → 停在 main 第一行
next # 执行 SYSCFG_DL_init()
next # 进入 while(1)
print cycle # 检查 cycle 值
continue # LED 开始闪
# 按 Ctrl+C 暂停
break src/main.c:20 # 在看 CLEAR 还是 SET 的地方断
continue # 停在断点
next # 单步看 LED ON/OFF
```
## VS Code
安装 [Cortex-Debug](https://marketplace.visualstudio.com/items?itemName=marus25.cortex-debug) 扩展后：
| 操作 | 按键 |
|------|:--:|
| 编译 | `Ctrl+Shift+B` |
| 编译 + 烧录 | `Ctrl+Shift+P` → `Run Task` → **Build & Flash** |
| 调试 | `F5`（自动启动 pyOCD → 烧录 → 停在 `main`） |
断点、单步、变量查看全在图形界面操作。首次 `F5` 会启动 pyOCD，之后每次自动复用已有服务器。
## 项目结构
```
blink/
├── .vscode/ # VS Code 配置 (纳入 Git)
│ ├── settings.json # CMake 工具链配置
│ ├── launch.json # Cortex-Debug F5 调试
│ └── tasks.json # Ctrl+Shift+B 编译 / Build & Flash
├── .clangd # clangd IntelliSense 配置
├── .gitignore
├── CMakeLists.txt # CMake 构建配置
├── gcc-arm-none-eabi.cmake # ARM 交叉编译工具链
├── blink.syscfg # SysConfig 引脚/时钟配置
├── start_pyocd.ps1 # pyOCD 服务器自动启动脚本
├── src/
│ └── main.c # 应用代码
├── include/ # 应用头文件
├── lib/ # 第三方库
└── build/ # 构建产物 (gitignore)
└── blink.elf # 固件
```
blink.syscfg
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/**
* LED Blink configuration for MSPM0G3507
* LED on PB9, active low
*/
//@cliArgs --device "MSPM0G350X" --package "LQFP-64(PM)" --part "Default"
const GPIO = scripting.addModule("/ti/driverlib/GPIO", {}, false);
const GPIO1 = GPIO.addInstance();
const SYSCTL = scripting.addModule("/ti/driverlib/SYSCTL");
GPIO1.$name = "GPIO_LED";
GPIO1.port = "PORTB";
GPIO1.associatedPins.create(1);
GPIO1.associatedPins[0].$name = "LED";
GPIO1.associatedPins[0].assignedPin = "9";
SYSCTL.forceDefaultClkConfig = true;
SYSCTL.clockTreeEn = true;
gcc-arm-none-eabi.cmake
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# CMake toolchain file for ARM Cortex-M0+ (MSPM0)
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR arm)
# Skip linker test for bare-metal (avoids _exit/_sbrk etc.)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
set(ARM_TOOLCHAIN_DIR "C:/Program Files/Arm/GNU Toolchain mingw-w64-x86_64-arm-none-eabi")
set(CMAKE_C_COMPILER "${ARM_TOOLCHAIN_DIR}/bin/arm-none-eabi-gcc.exe")
set(CMAKE_CXX_COMPILER "${ARM_TOOLCHAIN_DIR}/bin/arm-none-eabi-g++.exe")
set(CMAKE_ASM_COMPILER "${ARM_TOOLCHAIN_DIR}/bin/arm-none-eabi-gcc.exe")
set(CMAKE_OBJCOPY "${ARM_TOOLCHAIN_DIR}/bin/arm-none-eabi-objcopy.exe")
set(CMAKE_SIZE "${ARM_TOOLCHAIN_DIR}/bin/arm-none-eabi-size.exe")
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
src/main.c
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/**
* LED Blink - MSPM0G3507
* LED on PB9, active low (低电平点亮)
*/
#include "ti_msp_dl_config.h"
/**
* @brief 毫秒级延时函数 (基于 CPU 忙等)
* @param ms 要延时的毫秒数
*
* 假设 CPUCLK_FREQ = 32 MHz, 1 ms ≈ 32000 cycles
*/
void delay(uint32_t ms)
{
uint32_t cycles_per_ms = CPUCLK_FREQ / 1000;
while (ms--) {
delay_cycles(cycles_per_ms);
}
}
int cycle = 0;
int main(void)
{
/* Initialize GPIO and clocks via SysConfig-generated code */
SYSCFG_DL_init();
while (1) {
/* LED ON: PB9 = LOW (active low) */
DL_GPIO_clearPins(GPIO_LED_PORT, GPIO_LED_LED_PIN);
delay(100);
/* LED OFF: PB9 = HIGH */
DL_GPIO_setPins(GPIO_LED_PORT, GPIO_LED_LED_PIN);
delay(100);
cycle++;
}
}
start_pyocd.ps1
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# 检查 pyOCD 是否已在运行，没有则启动
$port = 3333
$alreadyRunning = netstat -ano 2>$null | Select-String ":$port .*LISTENING"
if ($alreadyRunning) {
Write-Host "pyOCD already running on port $port"
} else {
Write-Host "Starting pyOCD GDB server..."
python -m pyocd gdbserver -t mspm0g3507 -f 500000
}