PY32移植RT-Thread Nano记录

这次简单的给PY32移植一下RT-Thread Nano

开发板：PY32F003_StartKit （PY32F003F16U Flash 32K SRAM 4K）

IDE:MDK5

1.准备工作

这里bsp我直接使用厂商提供的bsp，原本想要直接选择芯片自己新建工程的，但是根据官方的教程一直没有成功于是就直接用现成的bsp了

下载：点击Pack installer

选择RT-Thread进行下载

Manage Rum-Time Environment，本次我们就只移植kernel，shell暂时我还用不上所以就先不移植了

2.清除重定义
rt-thread在运行过程中会使用到HandFault_Handler和PendSV_Handler用于线程切换，异常处理，所以需要将py32f0xx_it.c中的这两个函数删除，否则链接时会提示重定义

还有mdk中main函数的入口函数extern int Super$main(void);原来是在system_py32f0xx.c中实现的，rtthread也进行了接管在启动流程中是如下流程

rt_application_init->main_thread_entry->Super$main(void)，所以我们需要把system_py32f0xx.c中的删除

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(); // 配置系统时钟
  SystemCoreClockUpdate(); // 对系统时钟进行更新
  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.修改内存堆
  因为这个芯片sram很小所以我这里就给了2KB

#define RT_HEAP_SIZE (2*1024)
static rt_uint8_t rt_heap[RT_HEAP_SIZE];
5.愉快的点灯
/**

@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 应用程序入口函数.
@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 错误执行函数
@param 无
@retval 无
/
void APP_ErrorHandler(void)
{
/ 无限循环 /
while (1)
{
}
}
static void APP_LedConfig(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_GPIOB_CLK_ENABLE(); / GPIOB时钟使能 /
GPIO_InitStruct.Pin = GPIO_PIN_5;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; / 推挽输出 /
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 输出产生断言错误的源文件名及行号
@param file：源文件名指针
@param line：发生断言错误的行号
@retval 无
/
void assert_failed(uint8_t file, uint32_t line)
{
/ 用户可以根据需要添加自己的打印信息,
例如: printf("Wrong parameters value: file %s on line %drn", file, line) /
/ 无限循环 /
while (1)
{
}
}
#endif / USE_FULL_ASSERT /
/ ********************** (C) COPYRIGHT Puya END OF FILE *************/

结果：LED亮灭500ms