這次簡(jiǎn)單的給PY32移植一下RT-Thread Nano

開(kāi)發(fā)板：PY32F003_StartKit （PY32F003F16U Flash 32K SRAM 4K）

IDE:MDK5

1.準(zhǔn)備工作

這里bsp我直接使用廠商提供的bsp，原本想要直接選擇芯片自己新建工程的，但是根據(jù)官方的教程一直沒(méi)有成功于是就直接用現(xiàn)成的bsp了

下載：點(diǎn)擊Pack installer

選擇RT-Thread進(jìn)行下載

Manage Rum-Time Environment，本次我們就只移植kernel，shell暫時(shí)我還用不上所以就先不移植了

2.清除重定義

rt-thread在運(yùn)行過(guò)程中會(huì)使用到HandFault_Handler和PendSV_Handler用于線程切換，異常處理，所以需要將py32f0xx_it.c中的這兩個(gè)函數(shù)刪除，否則鏈接時(shí)會(huì)提示重定義

還有mdk中main函數(shù)的入口函數(shù)extern int Super$main(void);原來(lái)是在system_py32f0xx.c中實(shí)現(xiàn)的，rtthread也進(jìn)行了接管在啟動(dòng)流程中是如下流程

rt_application_init->main_thread_entry->Super$main(void)，所以我們需要把system_py32f0xx.c中的刪除

3.完成rt_hw_board_init

void rt_hw_board_init(void)

{

/*

TODO 1: OS Tick Configuration

Enable the hardware timer and call the rt_os_tick_callback function

periodically with the frequency RT_TICK_PER_SECOND.

*/

/* Call components board initial (use INIT_BOARD_EXPORT()) */

HAL_Init();

APP_SystemClockConfig(); // 配置系統(tǒng)時(shí)鐘

SystemCoreClockUpdate(); // 對(duì)系統(tǒng)時(shí)鐘進(jìn)行更新

SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);

#ifdef RT_USING_COMPONENTS_INIT

rt_components_board_init();

#endif

#if defined(RT_USING_USER_MAIN) && defined(RT_USING_HEAP)

rt_system_heap_init(rt_heap_begin_get(), rt_heap_end_get());

#endif

}

4.修改內(nèi)存堆

因?yàn)檫@個(gè)芯片sram很小所以我這里就給了2KB

#define RT_HEAP_SIZE (2*1024)

static rt_uint8_t rt_heap[RT_HEAP_SIZE];

5.愉快的點(diǎn)燈

/**

@file main.c

@author MCU Application Team

@brief Main program body

• @attention

? Copyright (c) Puya Semiconductor Co.

All rights reserved.

? Copyright (c) 2016 STMicroelectronics.

All rights reserved.

This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the

License. You may obtain a copy of the License at:

opensource.org/licenses/BSD-3-Clause

*/

/* Includes ------------------------------------------------------------------*/

#include "main.h"

#include

/* Private define ------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private user code ---------------------------------------------------------*/

/* Private macro -------------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/

/**

@brief 應(yīng)用程序入口函數(shù).

@retval int

*/

static void APP_LedConfig(void);

int main(void)

{

APP_LedConfig();

while (1)

{

rt_thread_delay(500);

HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);

}

}

/* *

@brief 錯(cuò)誤執(zhí)行函數(shù)

@param 無(wú)

@retval 無(wú)

*/

void APP_ErrorHandler(void)

{

/* 無(wú)限循環(huán) */

while (1)

{

}

}

static void APP_LedConfig(void)

{

GPIO_InitTypeDef GPIO_InitStruct;

__HAL_RCC_GPIOB_CLK_ENABLE(); /* GPIOB時(shí)鐘使能 */

GPIO_InitStruct.Pin = GPIO_PIN_5;

GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; /* 推挽輸出 */

GPIO_InitStruct.Pull = GPIO_PULLUP; /* 使能上拉 */

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; /* GPIO速度 */

HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); /* GPIO初始化 */

}

#ifdef USE_FULL_ASSERT

/* *

@brief 輸出產(chǎn)生斷言錯(cuò)誤的源文件名及行號(hào)

@param file：源文件名指針

@param line：發(fā)生斷言錯(cuò)誤的行號(hào)

@retval 無(wú)

*/

void assert_failed(uint8_t *file, uint32_t line)

{

/* 用戶可以根據(jù)需要添加自己的打印信息,

例如: printf("Wrong parameters value: file %s on line %d\\r\\n", file, line) */

/* 無(wú)限循環(huán) */

while (1)

{

}

}

#endif /* USE_FULL_ASSERT */

/** ********************** (C) COPYRIGHT Puya END OF FILE *************/

結(jié)果：LED亮滅500ms.