队列集
队列集简介
队列集相关API函数介绍
创建队列集
往队列集中添加队列
从队列集中移除队列
获取队列集中有有效消息的队列
队列集操作实验
代码
freertos_demo.c
/**
****************************************************************************************************
* @file freertos.c
* @author 正点原子团队(ALIENTEK)
* @version V1.4
* @date 2022-01-04
* @brief FreeRTOS 移植实验
* @license Copyright (c) 2020-2032, 广州市星翼电子科技有限公司
****************************************************************************************************
* @attention
*
* 实验平台:正点原子 探索者F407开发板
* 在线视频:www.yuanzige.com
* 技术论坛:www.openedv.com
* 公司网址:www.alientek.com
* 购买地址:openedv.taobao.com
*
****************************************************************************************************
*/
#include "freertos_demo.h"
#include "./SYSTEM/usart/usart.h"
#include "./BSP/LED/led.h"
#include "./BSP/LCD/lcd.h"
#include "./BSP/KEY/key.h"
#include "./SYSTEM/delay/delay.h"
#include "./MALLOC/malloc.h"
/*FreeRTOS*********************************************************************************************/
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"
/******************************************************************************************************/
/*FreeRTOS配置*/
/* START_TASK 任务 配置
* 包括: 任务句柄 任务优先级 堆栈大小 创建任务
*/
#define START_TASK_STACK_SIZE 128
#define START_TASK_PRIO 1
TaskHandle_t start_task_handler;
#define TASK1_STACK_SIZE 128
#define TASK1_PRIO 2
TaskHandle_t task1_handler;
#define TASK2_STACK_SIZE 128
#define TASK2_PRIO 3
TaskHandle_t task2_handler;
QueueSetHandle_t queue_set_handle;
QueueHandle_t queue_handle;
QueueHandle_t semphr_handle;
void start_task( void * pvParameters );
void task1( void * pvParameters )
{
uint8_t key = 0;
BaseType_t err;
while(1)
{
key = key_scan(0);
if(key == KEY0_PRES)
{
err = xQueueSend(queue_handle, &key, portMAX_DELAY);
if(err == pdTRUE)
{
printf("队列写入成功!!!\r\n");
}
}else if(key == KEY1_PRES)
{
err = xSemaphoreGive(semphr_handle);
if(err == pdPASS)
{
printf("信号量释放成功!!!\r\n");
}
}
}
}
void task2( void * pvParameters )
{
QueueSetMemberHandle_t member_handle;
uint8_t key;
BaseType_t err;
while(1)
{
member_handle = xQueueSelectFromSet(queue_set_handle, portMAX_DELAY);
if(member_handle == queue_handle)
{
err = xQueueReceive(member_handle, &key, portMAX_DELAY);
if(err == pdTRUE)
{
printf("queue_handle的值为:%d\r\n", key);
}
}else if(member_handle == semphr_handle)
{
err = xSemaphoreTake(member_handle, portMAX_DELAY);
if(err == pdTRUE)
{
printf("semphr_handle获取信号量成功!!!\r\n");
}
}
}
}
/******************************************************************************************************/
/**
* @brief FreeRTOS例程入口函数
* @param 无
* @retval 无
*/
void freertos_demo(void)
{
xTaskCreate(start_task, "start_task", START_TASK_STACK_SIZE, NULL, START_TASK_PRIO, &start_task_handler);
vTaskStartScheduler();
}
void start_task( void * pvParameters )
{
taskENTER_CRITICAL(); //进入临界区
queue_set_handle = xQueueCreateSet(2); //创建队列集,可以存放2个队列
if(queue_set_handle != NULL)
{
printf("队列集创建成功!!!\r\n");
}else
{
printf("队列集创建失败!!!\r\n");
}
queue_handle = xQueueCreate(1, sizeof(uint8_t)); //创建队列
if(queue_handle != NULL)
{
printf("队列创建成功!!!\r\n");
}else
{
printf("队列创建失败!!!\r\n");
}
semphr_handle = xSemaphoreCreateBinary(); //创建二值信号量
if(semphr_handle != NULL)
{
printf("二值信号量创建成功!!!\r\n");
}else
{
printf("二值信号量创建失败!!!\r\n");
}
xQueueAddToSet(queue_handle, queue_set_handle); //添加队列到队列集
xQueueAddToSet(semphr_handle, queue_set_handle); ////添加二值信号量到队列集
xTaskCreate(task1, "task1", TASK1_STACK_SIZE, NULL, TASK1_PRIO, &task1_handler);
xTaskCreate(task2, "task2", TASK2_STACK_SIZE, NULL, TASK2_PRIO, &task2_handler);
vTaskDelete(NULL);
taskEXIT_CRITICAL(); //退出临界区
}