catalogue
2.4 creating a basic stm32 framework
2.5 import file and add header function path
two point six Open keil and add item
5.1 create a new debug.ini file
5.3 enter the commissioning interface
1, Get uC/OS-III source code
Link: https://pan.baidu.com/s/1_Wk-hbeQ7KrvnoA0GwJXdA
Extraction code: qwer
2, Create folder
2.1 new folder
Create two new folders, UC BSP and UC config, which will be used later.
2.2 create an empty file
Create bsp.c and bsp.h files
2.3 import source code
2.4 creating a basic stm32 framework
Set gpio pins pb0 and PB1 to observe the led flashing under two task tasks, and set serial port usart1. The interrupt does not need to be turned on. At the same time, sys,rcc, and clock72MHZ should be set
For detailed pin settings, refer to: stm32 interrupt and serial DMA communication under stm32cubemx_ Laul Ken Yi's blog - CSDN blog
2.5 import file and add header function path
Import the source folder just created into the cubemx project directory just created
two point six Open keil and add item
Add six groups
2.6.1 add the blank files bsp.c and bsp.h just created under BSP and file. 
2.6.2 add 8 files under CONFIG
2.6.3 add 20 files in SOURCE
2.6.4 add 3 files under port
2.6.5 add 6 files under CPU
Including 3 under UC CPU and 3 under realview
2.6.6 add 10 files under lib
Similar to 2.6.6 CPU
2.7 add file compilation path
3, Rewrite code
3.1 modify startup file
PendSV_Handler -----> OS_CPU_PendSVHandler
SysTick_Handler -----> OS_CPU_SysTickHandler
Remember that there are two changes
3.2 modify CONFIG/app_cfg.h
#define APP_CFG_SERIAL_EN DEF_ENABLED ------#define APP_CFG_SERIAL_EN DEF_DISABLED
#define APP_TRACE BSP_Ser_Printf -------#define APP_TRACE (void)
3.3 modify CONFIG/includes.h
Add after #include < BSP. H >
#include "gpio.h"
#include "app_cfg.h"
Set #include < stm32f10x_ Change lib. H > to #include "stm32f1xx_hal.h"
3.4 modify BSP/bsp.c
// bsp.c
// 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
3.5 bsp.h
// bsp.h
#ifndef __BSP_H__ #define __BSP_H__ #include "stm32f1xx_hal.h" void BSP_Init(void); #endif
3.6 CONFIG/lib_cfg.h
lib_ Modify the macro definition of heap space in CFG. H, which was originally 27K, but the total RAM of this board is only 20k, which is modified to 5k
3.7 usart.c
Parameter configuration
Add header file
Add redirection printf function
/* 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 */
3.8 main.c
/* 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 */
/* Task priority */
#define START_TASK_PRIO 3
#define LED0_TASK_PRIO 4
#define MSG_TASK_PRIO 5
#define LED1_TASK_PRIO 6
/* Task stack size */
#define START_STK_SIZE 96
#define LED0_STK_SIZE 64
#define MSG_STK_SIZE 64
#define LED1_STK_SIZE 64
/* Task stack */
CPU_STK START_TASK_STK[START_STK_SIZE];
CPU_STK LED0_TASK_STK[LED0_STK_SIZE];
CPU_STK MSG_TASK_STK[MSG_STK_SIZE];
CPU_STK LED1_TASK_STK[LED1_STK_SIZE];
/* Task control block */
OS_TCB StartTaskTCB;
OS_TCB Led0TaskTCB;
OS_TCB MsgTaskTCB;
OS_TCB Led1TaskTCB;
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* Task function definition */
void start_task(void *p_arg);
static void AppTaskCreate(void);
static void AppObjCreate(void);
static void led_pb0(void *p_arg);
static void send_msg(void *p_arg);
static void led_pb1(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(); This will also be initialized in BSP initialization
MX_USART1_UART_Init();
/* Create task */
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);
/* Start the multitasking system and give control to 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); //Statistical tasks
#endif
#ifdef CPU_CFG_INT_DIS_MEAS_EN // If enabled, measure the interrupt off time
CPU_IntDisMeasMaxCurReset();
#endif
#if OS_CFG_SCHED_ROUND_ROBIN_EN // When using time slice rotation
//Enable the time slice rotation scheduling function. The time slice length is 1 system clock beat, i.e. 1*5=5ms
OSSchedRoundRobinCfg(DEF_ENABLED,1,&err);
#endif
OS_CRITICAL_ENTER(); //Enter critical zone
/* Create LED0 task */
OSTaskCreate((OS_TCB * )&Led0TaskTCB,
(CPU_CHAR * )"led_pb0",
(OS_TASK_PTR )led_pb0,
(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);
/* Create LED1 task */
OSTaskCreate((OS_TCB * )&Led1TaskTCB,
(CPU_CHAR * )"led_pb1",
(OS_TASK_PTR )led_pb1,
(void * )0,
(OS_PRIO )LED1_TASK_PRIO,
(CPU_STK * )&LED1_TASK_STK[0],
(CPU_STK_SIZE)LED1_STK_SIZE/10,
(CPU_STK_SIZE)LED1_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);
/* Create MSG task */
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); //Suspend start task
OS_CRITICAL_EXIT(); //Enter critical zone
}
/**
* Function function: start the task function body.
* Input parameter: p_arg is the formal parameter passed when the task was created
* Return value: None
* Description: None
*/
static void led_pb0 (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(GPIOB,GPIO_PIN_0,GPIO_PIN_RESET);
OSTimeDlyHMSM(0, 0, 1, 0,OS_OPT_TIME_HMSM_STRICT,&err);
HAL_GPIO_WritePin(GPIOB,GPIO_PIN_0,GPIO_PIN_SET);
OSTimeDlyHMSM(0, 0, 1, 0,OS_OPT_TIME_HMSM_STRICT,&err);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
static void led_pb1 (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(GPIOB,GPIO_PIN_1,GPIO_PIN_RESET);
OSTimeDlyHMSM(0, 0, 3, 0,OS_OPT_TIME_HMSM_STRICT,&err);
HAL_GPIO_WritePin(GPIOB,GPIO_PIN_1,GPIO_PIN_SET);
OSTimeDlyHMSM(0, 0, 3, 0,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 uc/OS \r\n");
OSTimeDlyHMSM(0, 0, 2, 0,OS_OPT_TIME_HMSM_STRICT,&err);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/* USER CODE BEGIN 4 */
/**
* Function function: create application task
* Input parameter: p_arg is the formal parameter passed when the task was created
* Return value: None
* Description: None
*/
static void AppTaskCreate (void)
{
}
/**
* Function function: uCOSIII kernel object creation
* Input parameters: None
* Return value: None
* Description: None
*/
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****/
4, Operation results
task1 and task2,led display, one is 1s flashing alternately, and the other is 3s flashing alternately
task3 serial output
5, Keil 5 simulation
Analysis background: Based on the uC/Os operating system transplanted under stm32cubemx, three task tasks, two LED tasks and serial output tasks are realized.
See the blog for specific projects
Porting uC/OS-III operating system based on stm32cubemx_ Laul Ken Yi's blog - CSDN blog
5.1 create a new debug.ini file
New text file
Enter the following debug configuration, otherwise keil simulation will report an error
map 0x40000000, 0x40007FFF read write // APB1 map 0x40010000, 0x400157FF read write // APB2 map 0x40020000, 0x4007FFFF read write // AHB1 map 0x50000000, 0x50060BFF read write // AHB2 map 0x60000000, 0x60000FFF read write // AHB3 map 0xE0000000, 0xE00FFFFF read write // CORTEX-M4 internal peripherals
And save it as an. ini file in the project directory. Remember to change the save type to all files.
5.2 open keil magic wand
Add the debug file just created at ②.
5.3 enter the commissioning interface
Set the corresponding pin to be observed. Use serial port 1, pb0 and PB1 mentioned in the previous blog.
Knowledge points:
GPIOB_IDR is the IDR register of GPIO. Its function is to read the status of the corresponding I/O port:
For example, gpioa - > IDR & 0x0001 is the level state of PA-1, and the 16 bits of IDR register correspond to P0-P1 of the GPIO
5.4 waveform results
Analysis: first look at the serial port output. One grid corresponds to 1s. When passing through two grids, that is, 2s serial port outputs a signal. For PB0, 1s is on and 1s is off in the project. It can be seen from the simulation diagram that 1s is high level and 1s is low level. For PB1, it can be seen from the number grid that 3s is a high level and 3s is a low level, which corresponds to 3s once set in the project.
6, Summary
Through the transplantation of uC/OS operating system, we have a general understanding of the realization of functions through the operating system. Through the simulation of waveform, we have a deeper understanding of the working principle of the protocol. It can be seen that the simulated waveform is basically consistent with the actual waveform, and it is still relatively easy when there is a boss.
Reference: zero dead angle play STM32F103 - guide.pdf
Simulation waveform analysis based on keil and real waveform capture based on logic analyzer_ Laul Ken Yi's blog - CSDN blogPorting uC/OS-III operating system based on stm32cubemx_ Laul Ken Yi's blog - CSDN blog