【GD32F427开发板试用】RT-THREAD标准版 移植使用

本篇文章来自极术社区与兆易创新组织的GD32F427开发板评测活动，更多开发板试用活动请关注极术社区网站。作者：打盹的消防车

前言：

无意在微信看到了GD做活动，想到了第一时间体验一下，搭配RT-THREAD，也很方便使用。

主要：本文只使用keil进行测试验证，gcc和iar需自行修改

硬件准备：

GD32F427 start开发板+TTL(方便查看shell数据)

移植篇:

我们不需要从头移植，因为rt-thread已经有GD的bsp了，我们将gd32450z-eval复制改名成gd32427v-start

随后将最新的标准库替换掉

因为GD的库API是一样的，我们只需要把芯片差异处修改一下：

Libraries\SConscript:

import rtconfigfrom building import *# get current directorycwd = GetCurrentDir()# The set of source files associated with this SConscript file.src = Glob('GD32F4xx_standard_peripheral/Source/*.c')src += [cwd + '/CMSIS/GD/GD32F4xx/Source/system_gd32f4xx.c']#add for startup scriptif rtconfig.PLATFORM in ['gcc']:    src += [cwd + '/CMSIS/GD/GD32F4xx/Source/GCC/startup_gd32f407_427.S']elif rtconfig.PLATFORM in ['armcc', 'armclang']:    src += [cwd + '/CMSIS/GD/GD32F4xx/Source/ARM/startup_gd32f407_427.s']elif rtconfig.PLATFORM in ['iccarm']:    src += [cwd + '/CMSIS/GD/GD32F4xx/Source/IAR/startup_gd32f407_427.s']path = [    cwd + '/CMSIS/GD/GD32F4xx/Include',    cwd + '/CMSIS',    cwd + '/GD32F4xx_standard_peripheral/Include',]if GetDepend(['RT_USING_BSP_USB']):    path += [cwd + '/GD32F4xx_usb_driver/Include']    src  += [cwd + '/GD32F4xx_usb_driver/Source']CPPDEFINES = ['USE_STDPERIPH_DRIVER']CPPDEFINES += ['GD32F427']group = DefineGroup('Libraries', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)Return('group')

board.h:

#ifndef __BOARD_H__#define __BOARD_H__#include #define EXT_SDRAM_BEGIN    (0xC0000000U) /* the begining address of external SDRAM */#define EXT_SDRAM_END      (EXT_SDRAM_BEGIN + (32U * 1024 * 1024)) /* the end address of external SDRAM *///  Internal SRAM memory size[Kbytes] //  Default: 64#ifdef __ICCARM__// Use *.icf ram symbal, to avoid hardcode.extern char __ICFEDIT_region_RAM_end__;#define GD32_SRAM_END   &__ICFEDIT_region_RAM_end__#else#define GD32_SRAM_SIZE  192#define GD32_SRAM_END   (0x20000000 + GD32_SRAM_SIZE * 1024)#endif#ifdef __CC_ARMextern int Image$$RW_IRAM1$$ZI$$Limit;#define HEAP_BEGIN    (&Image$$RW_IRAM1$$ZI$$Limit)#elif __ICCARM__#pragma section="HEAP"#define HEAP_BEGIN    (__segment_end("HEAP"))#elseextern int __bss_end;#define HEAP_BEGIN    (&__bss_end)#endif#define HEAP_END   GD32_SRAM_END#endif//*** <<>>    ***

#ifdef BSP_USING_UART0    { USART0,     // uart peripheral index USART0_IRQn,// uart iqrn RCU_USART0, RCU_GPIOB, RCU_GPIOB,// periph clock, tx gpio clock, rt gpio clock GPIOB, GPIO_AF_7, GPIO_PIN_6,    // tx port, tx alternate, tx pin GPIOB, GPIO_AF_7, GPIO_PIN_7,   // rx port, rx alternate, rx pin &serial0, "uart0",    },    #endif

#include #include #include "drv_gpio.h"#define LED2_PIN    GET_PIN(C, 6)int main(void){    rt_pin_mode(LED2_PIN, PIN_MODE_OUTPUT);    while (1)    { rt_pin_write(LED2_PIN, PIN_LOW); rt_thread_mdelay(500); rt_pin_write(LED2_PIN, PIN_HIGH); rt_thread_mdelay(500);    }}