AT32F425-测评报告-FreeRTOS_08

维尔瓦

AT32F425-测评报告-FreeRTOS_08 [复制链接]

 

简述

本系列是基于雅特力-AT32F425R8T7-7开发板的测评报

 

例程位置：

 

  例程功能分析：

 

 

从源码中可以看到，该例程主要创建了两个线程。

线程1： led2_task_function     //让LED2翻转

线程2：led3_task_function  //让LED3翻转

 

  开启线程调度

 

我们在原有例程上稍加改动

在两个线程的执行函数中添加串口打印  

NOTE: 注意例子中使用的是串口1

 

然后编译下载

插上USB-TTL连接到电脑

打开设备管理器，查看串口对应的端口

 

随便打开一个串口助手

 

可以看到板子发送上来的数据，而且板子上的LED也会闪烁，说明两个线程都在正常运行着。 

 

那么我们可以照葫芦画瓢自己来写一个线程，感受FreeRTOS的线程创建过程

## 1. 申明线程句柄变量和线程处理函数

## 2. 初始化LED4

## 3. 创建线程

  

## 4. 定义线程函数实体

 
 

 ## 5. 观察现象

 

通过串口助手可以看到线程4成功创建且线程函数也在正常运行，板子上的LED4也跟着闪烁 

 

最后贴上我的测试代码

/**
  **************************************************************************
  * [url=home.php?mod=space&uid=1307177]@File[/url]     main.c
  * [url=home.php?mod=space&uid=252314]@version[/url]  v2.0.1
  * [url=home.php?mod=space&uid=311857]@date[/url]     2022-02-11
  * [url=home.php?mod=space&uid=159083]@brief[/url]    main program
  **************************************************************************
  *                       Copyright notice & Disclaimer
  *
  * The software Board Support Package (BSP) that is made available to 
  * download from Artery official website is the copyrighted work of Artery. 
  * Artery authorizes customers to use, copy, and distribute the BSP 
  * software and its related documentation for the purpose of design and 
  * development in conjunction with Artery microcontrollers. Use of the 
  * software is governed by this copyright notice and the following disclaimer.
  *
  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  *
  **************************************************************************
  */

#include "at32f425_board.h"
#include "at32f425_clock.h"
#include "FreeRTOS.h"
#include "task.h"

/** @addtogroup UTILITIES_examples
  * @{
  */
  
/** @addtogroup FreeRTOS_demo
  * @{
  */
TaskHandle_t led2_handler;
TaskHandle_t led3_handler;
TaskHandle_t led4_handler;

/* led2 task */
void led2_task_function(void *pvParameters);
/* led3 task */
void led3_task_function(void *pvParameters);
/* led3 task */
void led4_task_function_ourself(void *pvParameters);
/**
  * @brief  main function.
  * @param  none
  * @retval none
  */
int main(void)
{
  nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
  
  system_clock_config();
  
  /* init led2 and led3 */
  at32_led_init(LED2);
  at32_led_init(LED3);
  at32_led_init(LED4);
  
  /* init usart1 */
  uart_print_init(115200);
  
  /* enter critical */
  taskENTER_CRITICAL(); 

  /* create led2 task */
  if(xTaskCreate((TaskFunction_t )led2_task_function,     
                 (const char*    )"LED2_task",   
                 (uint16_t       )512, 
                 (void*          )NULL,
                 (UBaseType_t    )2,
                 (TaskHandle_t*  )&led2_handler) != pdPASS)
  {
    printf("LED2 task could not be created as there was insufficient heap memory remaining.\r\n");
  }        
  else
  {
    printf("LED2 task was created successfully.\r\n");
  }
  /* create led3 task */
  if(xTaskCreate((TaskFunction_t )led3_task_function,     
                 (const char*    )"LED3_task",   
                 (uint16_t       )512, 
                 (void*          )NULL,
                 (UBaseType_t    )2,
                 (TaskHandle_t*  )&led3_handler) != pdPASS) 
  {
    printf("LED3 task could not be created as there was insufficient heap memory remaining.\r\n");
  }
  else
  {
    printf("LED3 task was created successfully.\r\n");
  }
  
  
  
  /* create led4 task */
  if(xTaskCreate((TaskFunction_t )led4_task_function_ourself,     
                 (const char*    )"LED4_task_ourself",   
                 (uint16_t       )512, 
                 (void*          )NULL,
                 (UBaseType_t    )3,
                 (TaskHandle_t*  )&led4_handler) != pdPASS) 
  {
    printf("LED4 task could not be created as there was insufficient heap memory remaining.\r\n");
  }
  else
  {
    printf("LED4 task was created successfully.\r\n");
  }
 
  /* exit critical */            
  taskEXIT_CRITICAL();      
              
  /* start scheduler */            
  vTaskStartScheduler(); 
}

/* led2 task function */
void led2_task_function(void *pvParameters)
{
  while(1)
  {
    at32_led_toggle(LED2);
	  printf("at32_led_toggle(LED2)\n");
    vTaskDelay(1000);
  }
}

/* led3 task function */
void led3_task_function(void *pvParameters)
{
  while(1)
  {
    at32_led_toggle(LED3);
	  printf("at32_led_toggle(LED3)\n");
    vTaskDelay(500);
  }
}

/* led4 task function */
void led4_task_function_ourself(void *pvParameters)
{
  while(1)
  {
    at32_led_toggle(LED4);
	  printf("at32_led_toggle(LED4)\n");
    vTaskDelay(500);
  }
}

/**
  * @}
  */ 

/**
  * @}
  */ 

 

 

 

lugl4313820

有系统使用起来就是方便吧。

维尔瓦

lugl4313820 发表于 2022-5-4 15:18 有系统使用起来就是方便吧。

是的，多线程用起来就是爽

freebsder

维尔瓦 发表于 2022-5-6 08:26 是的，多线程用起来就是爽

同步比较麻烦。