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STM32F103 FreeRTOS ???????????

??????????????? STM32F103 ??????? FreeRTOS ???????????????????? LED ???UART ?????

1. ?? Keil ???

????????? Keil C51 ????Keil ? FreeRTOS ?????????????????????????

2. STM32F103 ????

?? STM32F103 ???????????????????? Keil ????? USB ?????????????? Baud????? 115200?????

3. ?? FreeRTOS ??

? OpenMCU_RTOS ??????? STM32F1XX ??????HAL??????????

OpenMCU_RTOS\arch\STM32\STM32F1XX\CMSIS\Device\ST\STM32F1xx\Source\Templates

4. ????

? Keil ??????????????? STM32F103 ??????????????

• ?????startup_stm32f103x6.s
• HAL ???stm32f1xx_hal.c

???????? CPU ????? 48 MHz???????????? FreeRTOS ??????

5. ?? FreeRTOS ????

?? FreeRTOSConfig.h ??????????????????????????????????????????????

6. ????????

?????????????? LED ???UART ?????????????

/* ????? HAL ??? */
#include "stm32f1xx_hal.h"
#include "stm32f1xx_hal_uart.h"
#include "stm32f1xx_hal_GPIO.c"
/* ??????? */
#define TASK_LED_PRIORITY 1
#define TASK_UART_PRIORITY 2
/* ????? */
#define LED_TASK_STACK_SIZE 100
#define UART_TASK_STACK_SIZE 100
/* ?? ID */
uint32_t led_task_id;
uint32_t uart_task_id;
/* LED ?? */
bool led_state = false;
/* ???? prototypes */
void led_task(void *args);
void uart_task(void *args);
/* ????? */
void init_GPIO_and_UART(void);
/* ????? */
UART_HandleTypeDef uart_handle;
/* ?????? */
void sys_init(void);
/* ????????? */
void read_UART_data(void);
/* ??????? */
TaskDescriptor *tasks;
/* ???? */
uint32_t task_create TaskDescriptor *taskDescriptor, uint32_t priority, uint32_t stackSize, uint32_t *taskID);
/* ???? */
void vTaskStart(void *taskDescriptor);
/* ????? */
void init_UART(void) {
    uart_handle.Instance = UART_1;
    uart_handle.BaudRate = 115200;
    HAL_UART_Init(&uart_handle);
}
/* GPIO ??? */
void init_GPIO_and_UART(void) {
    GPIO_InitTypeDef GPIO_InitStruct;
    // ??? GPIO ??
    GPIO_InitStruct.Pin = GPIO_PIN_x;  // ?????????????
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_Init(GPIO_UART_IRQn, &GPIO_InitStruct);
    // ??? UART
    init_UART();
}
/* LED ???? */
void led_task(void *args) {
    while(1) {
        // ?????? LED
        if(led_state) {
            GPIO_WriteBit(GPIO_LED, 1 << LED_OUTPUT_PIN);
            led_state = 0;
        } else {
            GPIO_WriteBit(GPIO_LED, 0);
            led_state = 1;
        }
        vTaskDelay(1000);  // ?? 1 ?
    }
}
/* ???????? */
void uart_task(void *args) {
    while(1) {
        if(UART_GetIT(&uart_handle) != 0) {
            char data = UART_ReadData(&uart_handle);
            printf("?????%c\r\n", data);
            vTaskDelay(500);  // ?? 0.5 ?
        }
    }
}
/* ????? */
int main() {
    // ?????
    sys_init();
    // ???????
    tasks = malloc( sizeof(TaskDescriptor) );
    tasks->taskName = "LED";
    tasks->priority = TASK_LED_PRIORITY;
    tasks->stackSize = LED_TASK_STACK_SIZE;
    led_task_id = task_create( tasks, TASK_LED_PRIORITY, LED_TASK_STACK_SIZE, &led_task_id );
    vTaskStart( tasks );
    tasks->taskName = "UART";
    tasks->priority = TASK_UART_PRIORITY;
    tasks->stackSize = UART_TASK_STACK_SIZE;
    uart_task_id = task_create( tasks, TASK_UART_PRIORITY, UART_TASK_STACK_SIZE, &uart_task_id );
    vTaskStart( tasks );
    for( ;; );  // ??????
}

7. ???????

? Keil ????????????????????????????

// ????? Baudrate ??
BDOPATH "COM3"
BAUD 115200
// USB ??????? Baudrate
// ???? USB ??????????
// (???????????? Baudrate)
// #define   UART_DEVICE   UART_1
// #define   UART_BAUD    115200
// ???????
# define   UART_IRQ    14  // ???????????
// ?????
# define   UART_CLK     48000000  // ????????????

8. ???????

? Keil ???????????????????????????????????????????????? STM32F103 ??

9. ?????

??????? USB ???????? Keil ??????? UART ??? LED ??????????????????????? LED ????????????

10. ?????

????????? LED ?UART ??????????????????????????????????????

?????????????? STM32F103 ? FreeRTOS ??????????????????????????????????