1、完成实验例程中综合实验； 2、在综合实验基础上对ucos系统进行裁剪，创建三个任务： 任务一：LED常亮； 任务二：LED交替闪烁，上按键触发； 任务三：LED灭，下按键触发。

1. 综合实验代码：

#include "main.h"
#include "bsp_led.h"
#include "bsp_key.h"
#include "bsp_uart.h"
#include "bsp_delay.h"

#include "os.h"

#define TASK1_STACK_SIZE  256u
#define TASK2_STACK_SIZE  256u
#define TASK3_STACK_SIZE  256u

static OS_TCB Task1TCB;
static CPU_STK Task1Stack[TASK1_STACK_SIZE];
static void Task1(void* p_arg);

static OS_TCB Task2TCB;
static CPU_STK Task2Stack[TASK2_STACK_SIZE];
static void Task2(void* p_arg);

static OS_TCB Task3TCB;
static CPU_STK Task3Stack[TASK3_STACK_SIZE];
static void Task3(void* p_arg);

int main(void)
{
    HAL_Init();
    SystemClock_Config();

    LED_GPIO_Init();
    KEY_GPIO_Init();
    UART_GPIO_Init();
    Delay_Init();

    OS_ERR err;

    OSInit(&err);
    if (err != OS_ERR_NONE) {
        printf("OS init failed: %d\n", err);
        while (1);
    }

    OSTaskCreate(&Task1TCB, "Task1", Task1, NULL, 2u, &Task1Stack[0], TASK1_STACK_SIZE / 10u, TASK1_STACK_SIZE, 0u, 0u, NULL, (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR), &err);
    if (err != OS_ERR_NONE) {
        printf("Task1 create failed: %d\n", err);
        while (1);
    }

    OSTaskCreate(&Task2TCB, "Task2", Task2, NULL, 3u, &Task2Stack[0], TASK2_STACK_SIZE / 10u, TASK2_STACK_SIZE, 0u, 0u, NULL, (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR), &err);
    if (err != OS_ERR_NONE) {
        printf("Task2 create failed: %d\n", err);
        while (1);
    }

    OSTaskCreate(&Task3TCB, "Task3", Task3, NULL, 4u, &Task3Stack[0], TASK3_STACK_SIZE / 10u, TASK3_STACK_SIZE, 0u, 0u, NULL, (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR), &err);
    if (err != OS_ERR_NONE) {
        printf("Task3 create failed: %d\n", err);
        while (1);
    }

    OSStart(&err);
    if (err != OS_ERR_NONE) {
        printf("OS start failed: %d\n", err);
        while (1);
    }

    while (1);
}

void Task1(void* p_arg)
{
    (void)p_arg;
    while (1) {
        LED_ON();
        OSTimeDlyHMSM(0, 0, 1, 0, OS_OPT_TIME_HMSM_STRICT, NULL);
        LED_OFF();
        OSTimeDlyHMSM(0, 0, 1, 0, OS_OPT_TIME_HMSM_STRICT, NULL);
    }
}

void Task2(void* p_arg)
{
    (void)p_arg;
    while (1) {
        if (KEY1_PRESSED()) {
            LED_TOGGLE();
            OSTimeDlyHMSM(0, 0, 0, 500, OS_OPT_TIME_HMSM_STRICT, NULL);
        } else {
            OSTimeDlyHMSM(0, 0, 0, 10, OS_OPT_TIME_HMSM_STRICT, NULL);
        }
    }
}

void Task3(void* p_arg)
{
    (void)p_arg;
    while (1) {
        if (KEY2_PRESSED()) {
            LED_OFF();
            OSTimeDlyHMSM(0, 0, 0, 500, OS_OPT_TIME_HMSM_STRICT, NULL);
        } else {
            OSTimeDlyHMSM(0, 0, 0, 10, OS_OPT_TIME_HMSM_STRICT, NULL);
        }
    }
}

void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        Error_Handler();
    }

    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
    {
        Error_Handler();
    }
}

2. 裁剪ucos系统后的代码：

#include "main.h"
#include "bsp_led.h"
#include "bsp_key.h"
#include "bsp_uart.h"
#include "bsp_delay.h"

#include "os.h"

#define TASK1_STACK_SIZE  256u
#define TASK2_STACK_SIZE  256u
#define TASK3_STACK_SIZE  256u

static OS_TCB Task1TCB;
static CPU_STK Task1Stack[TASK1_STACK_SIZE];
static void Task1(void* p_arg);

static OS_TCB Task2TCB;
static CPU_STK Task2Stack[TASK2_STACK_SIZE];
static void Task2(void* p_arg);

static OS_TCB Task3TCB;
static CPU_STK Task3Stack[TASK3_STACK_SIZE];
static void Task3(void* p_arg);

int main(void)
{
    HAL_Init();
    SystemClock_Config();

    LED_GPIO_Init();
    KEY_GPIO_Init();
    UART_GPIO_Init();
    Delay_Init();

    OS_ERR err;

    OSInit(&err);
    if (err != OS_ERR_NONE) {
        printf("OS init failed: %d\n", err);
        while (1);
    }

    OSTaskCreate(&Task1TCB, "Task1", Task1, NULL, 2u, &Task1Stack[0], TASK1_STACK_SIZE / 10u, TASK1_STACK_SIZE, 0u, 0u, NULL, (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR), &err);
    if (err != OS_ERR_NONE) {
        printf("Task1 create failed: %d\n", err);
        while (1);
    }

    OSTaskCreate(&Task2TCB, "Task2", Task2, NULL, 3u, &Task2Stack[0], TASK2_STACK_SIZE / 10u, TASK2_STACK_SIZE, 0u, 0u, NULL, (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR), &err);
    if (err != OS_ERR_NONE) {
        printf("Task2 create failed: %d\n", err);
        while (1);
    }

    OSTaskCreate(&Task3TCB, "Task3", Task3, NULL, 4u, &Task3Stack[0], TASK3_STACK_SIZE / 10u, TASK3_STACK_SIZE, 0u, 0u, NULL, (OS_OPT_TASK_STK_CHK | OS_OPT_TASK_STK_CLR), &err);
    if (err != OS_ERR_NONE) {
        printf("Task3 create failed: %d\n", err);
        while (1);
    }

    OSStart(&err);
    if (err != OS_ERR_NONE) {
        printf("OS start failed: %d\n", err);
        while (1);
    }

    while (1);
}

void Task1(void* p_arg)
{
    (void)p_arg;
    while (1) {
        LED_ON();
        OSTimeDlyHMSM(0, 0, 1, 0, OS_OPT_TIME_HMSM_STRICT, NULL);
        LED_OFF();
        OSTimeDlyHMSM(0, 0, 1, 0, OS_OPT_TIME_HMSM_STRICT, NULL);
    }
}

void Task2(void* p_arg)
{
    (void)p_arg;
    while (1) {
        if (KEY1_PRESSED()) {
            LED_TOGGLE();
            OSTimeDlyHMSM(0, 0, 0, 500, OS_OPT_TIME_HMSM_STRICT, NULL);
        } else {
            OSTimeDlyHMSM(0, 0, 0, 10, OS_OPT_TIME_HMSM_STRICT, NULL);
        }
    }
}

void Task3(void* p_arg)
{
    (void)p_arg;
    while (1) {
        if (KEY2_PRESSED()) {
            LED_OFF();
            OSTimeDlyHMSM(0, 0, 0, 500, OS_OPT_TIME_HMSM_STRICT, NULL);
        } else {
            OSTimeDlyHMSM(0, 0, 0, 10, OS_OPT_TIME_HMSM_STRICT, NULL);
        }
    }
}

void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        Error_Handler();
    }

    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
    {
        Error_Handler();
    }
}

/* 裁剪ucos系统：去掉不需要的功能模块 */
#define OS_CFG_APP_HOOKS_EN                    DEF_DISABLED
#define OS_CFG_DBG_EN                           DEF_DISABLED
#define OS_CFG_SCHED_LOCK_TIME_MEAS_EN          DEF_DISABLED
#define OS_CFG_TICK_RATE_HZ                     1000u
#define OS_CFG_PRIO_MAX                         10u

#include "os_cfg.h"