[嵌入式]STM32F103C8T6移植uC/OS-III

一、项目生成与文件处理

1.CubeMX生成项目文件

• 打开stm32 cubeMX，选择芯片stm32f103c8，配置RCC
  
• 配置SYS
  
• 设置PC13为GPIO_Output用于点亮LED灯
  
• 设置串口USART1
  
• 设置工程
  
• 生成代码，在main函数中的while循环里添加语句

while (1)
  {
 
		HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_SET);
		HAL_Delay(500);
		HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);
		HAL_Delay(500);
  }

• 仿真设置
  
• 编译，仿真运行，观察波形图，可以看到电平周期性变化，证明代码没有问题
  

2.uCOSIII源码文件处理

• 下载uCOSIII源码：

官网下载（速度较慢）：http://micrium.com/downloadcenter/
网盘下载（推荐）提取码：1234：https://pan.baidu.com/s/10RqsDRecbmVteWmDv2oUNQ

• 目录如下（在这个页面建立uC-BSP和uC-CONFIG这两个文件夹，是为了方便后面导入）
  
• 在uC-BSP新建bsp.c和bsp.h，空文件，等导入之后再加代码
• 给文件夹uC-CONFIG添加以下文件（从以下路径复制过来）
  
• 将uCOS相关文件复制到HAL工程的MDK-ARM文件夹下
  

3.将uCOS文件添加到项目

• 接下来打开keil，点击小方块Manage Project Items，为项目增加下面这几个分组
• 注意！在添加文件时文件类型选择所有文件
  
• 为分组CPU添加文件，点击CPU–>Add Files…，选中以下文件，Add
  
• 为分组LIB添加文件
  
• 为分组SOURCE添加文件
  
• 为分组CONFIG添加文件
  
• 为分组PORT添加文件
  
• 为分组BSP添加文件
  
• 添加完成，点击OK
  
• 导入文件路径
  

二、代码编辑

• 为bsp.c和bsp.h添加代码

// bsp.h
#ifndef  __BSP_H__
#define  __BSP_H__

#include "stm32f1xx_hal.h"

void BSP_Init(void);

#endif

// bsp.c
#include "includes.h"

#define  DWT_CR      *(CPU_REG32 *)0xE0001000
#define  DWT_CYCCNT  *(CPU_REG32 *)0xE0001004
#define  DEM_CR      *(CPU_REG32 *)0xE000EDFC
#define  DBGMCU_CR   *(CPU_REG32 *)0xE0042004

#define  DEM_CR_TRCENA                   (1 << 24)
#define  DWT_CR_CYCCNTENA                (1 <<  0)

CPU_INT32U  BSP_CPU_ClkFreq (void)
{
    return HAL_RCC_GetHCLKFreq();
}

void BSP_Tick_Init(void)
{
	CPU_INT32U cpu_clk_freq;
	CPU_INT32U cnts;
	cpu_clk_freq = BSP_CPU_ClkFreq();
	
	#if(OS_VERSION>=3000u)
		cnts = cpu_clk_freq/(CPU_INT32U)OSCfg_TickRate_Hz;
	#else
		cnts = cpu_clk_freq/(CPU_INT32U)OS_TICKS_PER_SEC;
	#endif
	OS_CPU_SysTickInit(cnts);
}



void BSP_Init(void)
{
	BSP_Tick_Init();
	MX_GPIO_Init();
}


#if (CPU_CFG_TS_TMR_EN == DEF_ENABLED)
void  CPU_TS_TmrInit (void)
{
    CPU_INT32U  cpu_clk_freq_hz;


    DEM_CR         |= (CPU_INT32U)DEM_CR_TRCENA;                /* Enable Cortex-M3's DWT CYCCNT reg.                   */
    DWT_CYCCNT      = (CPU_INT32U)0u;
    DWT_CR         |= (CPU_INT32U)DWT_CR_CYCCNTENA;

    cpu_clk_freq_hz = BSP_CPU_ClkFreq();
    CPU_TS_TmrFreqSet(cpu_clk_freq_hz);
}
#endif


#if (CPU_CFG_TS_TMR_EN == DEF_ENABLED)
CPU_TS_TMR  CPU_TS_TmrRd (void)
{
    return ((CPU_TS_TMR)DWT_CYCCNT);
}
#endif


#if (CPU_CFG_TS_32_EN == DEF_ENABLED)
CPU_INT64U  CPU_TS32_to_uSec (CPU_TS32  ts_cnts)
{
	CPU_INT64U  ts_us;
  CPU_INT64U  fclk_freq;

 
  fclk_freq = BSP_CPU_ClkFreq();
  ts_us     = ts_cnts / (fclk_freq / DEF_TIME_NBR_uS_PER_SEC);

  return (ts_us);
}
#endif
 
 
#if (CPU_CFG_TS_64_EN == DEF_ENABLED)
CPU_INT64U  CPU_TS64_to_uSec (CPU_TS64  ts_cnts)
{
	CPU_INT64U  ts_us;
	CPU_INT64U  fclk_freq;


  fclk_freq = BSP_CPU_ClkFreq();
  ts_us     = ts_cnts / (fclk_freq / DEF_TIME_NBR_uS_PER_SEC);
	
  return (ts_us);
}
#endif

• 修改main.c文件代码

/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "gpio.h"
#include "usart.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <includes.h>
#include "stm32f1xx_hal.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* 任务优先级 */
#define START_TASK_PRIO		3
#define LED0_TASK_PRIO		4
#define MSG_TASK_PRIO		5

/* 任务堆栈大小	*/
#define START_STK_SIZE 		64
#define LED0_STK_SIZE 		64
#define MSG_STK_SIZE 		64//任务堆大小过大会报错，可以试着改小一点

/* 任务栈 */	
CPU_STK START_TASK_STK[START_STK_SIZE];
CPU_STK LED0_TASK_STK[LED0_STK_SIZE];
CPU_STK MSG_TASK_STK[MSG_STK_SIZE];
/* 任务控制块 */
OS_TCB StartTaskTCB;
OS_TCB Led0TaskTCB;
OS_TCB MsgTaskTCB;
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

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

/* USER CODE BEGIN PV */

/* 任务函数定义 */
void start_task(void *p_arg);
static  void  AppTaskCreate(void);
static  void  AppObjCreate(void);
static  void  led_pc13(void *p_arg);
static  void  send_msg(void *p_arg);
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /**Initializes the CPU, AHB and APB busses clocks 
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /**Initializes the CPU, AHB and APB busses clocks 
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
	OS_ERR  err;
	OSInit(&err);
  HAL_Init();
	SystemClock_Config();
	//MX_GPIO_Init(); 这个在BSP的初始化里也会初始化
  MX_USART1_UART_Init();	
	/* 创建任务 */
	OSTaskCreate((OS_TCB     *)&StartTaskTCB,                /* Create the start task                                */
				 (CPU_CHAR   *)"start task",
				 (OS_TASK_PTR ) start_task,
				 (void       *) 0,
				 (OS_PRIO     ) START_TASK_PRIO,
				 (CPU_STK    *)&START_TASK_STK[0],
				 (CPU_STK_SIZE) START_STK_SIZE/10,
				 (CPU_STK_SIZE) START_STK_SIZE,
				 (OS_MSG_QTY  ) 0,
				 (OS_TICK     ) 0,
				 (void       *) 0,
				 (OS_OPT      )(OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR),
				 (OS_ERR     *)&err);
	/* 启动多任务系统，控制权交给uC/OS-III */
	OSStart(&err);            /* Start multitasking (i.e. give control to uC/OS-III). */
               
}


void start_task(void *p_arg)
{
	OS_ERR err;
	CPU_SR_ALLOC();
	p_arg = p_arg;
	
	/* YangJie add 2021.05.20*/
  BSP_Init();                                                   /* Initialize BSP functions */
  //CPU_Init();
  //Mem_Init();                                                 /* Initialize Memory Management Module */

#if OS_CFG_STAT_TASK_EN > 0u
   OSStatTaskCPUUsageInit(&err);  		//统计任务                
#endif
	
#ifdef CPU_CFG_INT_DIS_MEAS_EN			//如果使能了测量中断关闭时间
    CPU_IntDisMeasMaxCurReset();	
#endif

#if	OS_CFG_SCHED_ROUND_ROBIN_EN  		//当使用时间片轮转的时候
	 //使能时间片轮转调度功能,时间片长度为1个系统时钟节拍，既1*5=5ms
	OSSchedRoundRobinCfg(DEF_ENABLED,1,&err);  
#endif		
	
	OS_CRITICAL_ENTER();	//进入临界区
	/* 创建LED0任务 */
	OSTaskCreate((OS_TCB 	* )&Led0TaskTCB,		
				 (CPU_CHAR	* )"led_pc13", 		
                 (OS_TASK_PTR )led_pc13, 			
                 (void		* )0,					
                 (OS_PRIO	  )LED0_TASK_PRIO,     
                 (CPU_STK   * )&LED0_TASK_STK[0],	
                 (CPU_STK_SIZE)LED0_STK_SIZE/10,	
                 (CPU_STK_SIZE)LED0_STK_SIZE,		
                 (OS_MSG_QTY  )0,					
                 (OS_TICK	  )0,					
                 (void   	* )0,					
                 (OS_OPT      )OS_OPT_TASK_STK_CHK|OS_OPT_TASK_STK_CLR,
                 (OS_ERR 	* )&err);				
				 
	/* 创建LED1任务 */
	OSTaskCreate((OS_TCB 	* )&MsgTaskTCB,		
				 (CPU_CHAR	* )"send_msg", 		
                 (OS_TASK_PTR )send_msg, 			
                 (void		* )0,					
                 (OS_PRIO	  )MSG_TASK_PRIO,     	
                 (CPU_STK   * )&MSG_TASK_STK[0],	
                 (CPU_STK_SIZE)MSG_STK_SIZE/10,	
                 (CPU_STK_SIZE)MSG_STK_SIZE,		
                 (OS_MSG_QTY  )0,					
                 (OS_TICK	  )0,					
                 (void   	* )0,				
                 (OS_OPT      )OS_OPT_TASK_STK_CHK|OS_OPT_TASK_STK_CLR, 
                 (OS_ERR 	* )&err);
				 
	OS_TaskSuspend((OS_TCB*)&StartTaskTCB,&err);		//挂起开始任务			 
	OS_CRITICAL_EXIT();	//进入临界区
}
/**
  * 函数功能: 启动任务函数体。
  * 输入参数: p_arg 是在创建该任务时传递的形参
  * 返 回 值: 无
  * 说    明：无
  */
static  void  led_pc13 (void *p_arg)
{
  OS_ERR      err;

  (void)p_arg;

  BSP_Init();                                                 /* Initialize BSP functions                             */
  CPU_Init();

  Mem_Init();                                                 /* Initialize Memory Management Module                  */

#if OS_CFG_STAT_TASK_EN > 0u
  OSStatTaskCPUUsageInit(&err);                               /* Compute CPU capacity with no task running            */
#endif

  CPU_IntDisMeasMaxCurReset();

  AppTaskCreate();                                            /* Create Application Tasks                             */

  AppObjCreate();                                             /* Create Application Objects                           */

  while (DEF_TRUE)
  {
		HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_RESET);
		OSTimeDlyHMSM(0, 0, 0, 500,OS_OPT_TIME_HMSM_STRICT,&err);
		HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,GPIO_PIN_SET);
		OSTimeDlyHMSM(0, 0, 0, 500,OS_OPT_TIME_HMSM_STRICT,&err);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
static  void  send_msg (void *p_arg)
{
  OS_ERR      err;

  (void)p_arg;

  BSP_Init();                                                 /* Initialize BSP functions                             */
  CPU_Init();

  Mem_Init();                                                 /* Initialize Memory Management Module                  */

#if OS_CFG_STAT_TASK_EN > 0u
  OSStatTaskCPUUsageInit(&err);                               /* Compute CPU capacity with no task running            */
#endif

  CPU_IntDisMeasMaxCurReset();

  AppTaskCreate();                                            /* Create Application Tasks                             */

  AppObjCreate();                                             /* Create Application Objects                           */

  while (DEF_TRUE)
  {
			printf("hello world \r\n");
		OSTimeDlyHMSM(0, 0, 0, 500,OS_OPT_TIME_HMSM_STRICT,&err);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}


/* USER CODE BEGIN 4 */
/**
  * 函数功能: 创建应用任务
  * 输入参数: p_arg 是在创建该任务时传递的形参
  * 返 回 值: 无
  * 说    明：无
  */
static  void  AppTaskCreate (void)
{
  
}


/**
  * 函数功能: uCOSIII内核对象创建
  * 输入参数: 无
  * 返 回 值: 无
  * 说    明：无
  */
static  void  AppObjCreate (void)
{

}

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */

  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{ 
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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

• 将启动文件startup_…里这两处的PendSV_Handler和Systick_Handler改为OS_CPU_PendSVHandler和OS_CPU_SysTickHandler
  
  

• 在app_cfg.h里有两处修改

#define APP_CFG_SERIAL_EN DEF_ENABLED 改为#define APP_CFG_SERIAL_EN DEF_DISABLED

#define APP_TRACE BSP_Ser_Printf改为#define APP_TRACE (void)

• 在includes.h里有两处修改

在#include <bsp.h> 后面加上
#include “gpio.h”
#include “app_cfg.h”

将#include <stm32f10x_lib.h> 改为
#include “stm32f1xx_hal.h”

• 在lib_cfg.h里修改堆空间的宏定义，它原本是27K，但这块板子RAM一共才20k，修改为5k
  
• 由于我们使用了printf函数，需要在usart.c文件中添加以下代码完成printf重定向，记得添加头文件"stdio.h"

/* USER CODE BEGIN 1 */
int fputc(int ch,FILE *f){
	HAL_UART_Transmit(&huart1,(uint8_t *)&ch,1,0xffff);
	return ch;
}
/* USER CODE END 1 */

• 参数配置
  

• 烧录运行
  
  板子上运行效果如下（可以看到PC13和RXD的指示灯在闪烁，说明在发送数据）
  

三、总结

很麻烦！在文件添加过程中一定要仔细，一不小心就加错了，加重复了，代码编译不报错，但不能运行，很大可能是参数配置的问题。

参考文献

https://blog.csdn.net/qq_45659777/article/details/121570886
https://blog.csdn.net/junseven164/article/details/121534916