求助帖：ESP8266在FreeRTOS出现一个器奇怪的问题

yenhgng001

本小白在把ESP8266放进FreeRTOS时遇到了一些小问题，找了很久就是找不到问题出在哪里
以下是main函数

1. 
   
2. int main(void)
   
3. {
   
4. LED_Init();
   
5. USART1_Init();
   
6. ESP8266_Init();
   
7. 
   
8. xTaskCreate(vTask_LED_RED   ,"Task LED RED"   ,100 ,NULL,2,NULL);
   
9. xTaskCreate(vTask_LED_BLUE  ,"Task LED BLUE"  ,100 ,NULL,1,NULL);
   
10. xTaskCreate(vTask_ESP8266_Test,"Task ESP8266 Test",1000,NULL,3,NULL);
    
11. 
    
12. vTaskStartScheduler();
    
13. }
    

复制代码

在不运行第三个ESP8266的任务的情况下，前两个LED任务完全没问题

以下是vTask_ESP8266_Test()函数

1. 
   
2. void vTask_ESP8266_Test(void *vParameters){
   
3. char* respond;
   
4. ESP8266_Start();
   
5. 
   
6. while(1){
   
7.   ESP8266_SendString ( ENABLE, "GET http://baidu.com HTTP/1.0\r\n\r\n\r\n", 0, Single_ID_0 );
   
8.   printf("Send GET Request Done!\n");
   
9.   respond = ESP8266_ReceiveString(ENABLE);
   
10.   printf("%s",respond);
    
11.   vTaskDelay(5000/portTICK_RATE_MS);
    
12. }
    
13. }<div>
    
14. 
    
15. </div>

复制代码

ESP8266是按照野火裸机例程写的

这是ESP8266_Start()函数

1. 
   
2. void ESP8266_Start(){
   
3. 
   
4. printf ( "\r\n正在配置 ESP8266 ......\r\n" );
   
5. 
   
6. ESP8266_CH_ENABLE();
   
7. 
   
8. #if DEBUG
   
9. printf("CH Enable Done!\n");
   
10. #endif
    
11. 
    
12. ESP8266_AT_Test ();
    
13. 
    
14. #if DEBUG
    
15. printf("AT Test Done!\n");
    
16. #endif
    
17. 
    
18. ESP8266_Net_Mode_Choose ( STA );
    
19. 
    
20. #if DEBUG
    
21. printf("Choose STA Net Mode Done!\n");
    
22. #endif
    
23.   while ( ! ESP8266_JoinAP ( AP_SSID, AP_PASSWORD ) );
    
24. 
    
25. #if DEBUG
    
26. printf("Join AP Done!\n");
    
27. #endif
    
28. 
    
29. ESP8266_Enable_MultipleId ( DISABLE );
    
30. 
    
31. #if DEBUG
    
32. printf("Disable MultipleId Done!\n");
    
33. #endif
    
34. 
    
35. while ( ! ESP8266_Link_Server ( enumTCP, TcpServer_IP, TcpServer_Port, Single_ID_0 ) );
    
36. 
    
37. #if DEBUG
    
38. printf("Link Server Done!\n");
    
39. #endif
    
40. 
    
41. while ( ! ESP8266_UnvarnishSend () );
    
42. 
    
43. #if DEBUG
    
44. printf("Start UnvarnishSend Done!");
    
45. #endif
    
46. 
    
47. printf ( "\r\n配置 ESP8266完毕\r\n" );
    
48. }
    

复制代码

下面是中断函数

1. 
   
2. void USART3_IRQHandler ( void )
   
3. {
   
4. uint8_t ucCh;
   
5. 
   
6. if ( USART_GetITStatus ( ESP8266_USARTx, USART_IT_RXNE ) == SET )
   
7. {
   
8.   ucCh  = USART_ReceiveData( ESP8266_USARTx );
   
9.   
   
10.   if ( strEsp8266_Fram_Record .InfBit .FramLength < ( RX_BUF_MAX_LEN - 1 ) )                  
    
11.    strEsp8266_Fram_Record .Data_RX_BUF [ strEsp8266_Fram_Record .InfBit .FramLength ++ ]  = ucCh;
    
12. }
    
13.    
    
14. if ( USART_GetITStatus( ESP8266_USARTx, USART_IT_IDLE ) == SET )                                       
    
15. {
    
16.     strEsp8266_Fram_Record .InfBit .FramFinishFlag = 1;
    
17.   
    
18.   ucCh = USART_ReceiveData( ESP8266_USARTx );                                                   
    
19. 
    
20.   ucTcpClosedFlag = strstr ( strEsp8266_Fram_Record .Data_RX_BUF, "CLOSED\r\n" ) ? 1 : 0;
    
21.   }
    
22. }
    

复制代码

程序运行后一直到vTask_ESP8266_Test()函数的while循环里就开始出问题了，第一次发送GET请求是没有问题的，也能接收到响应，但是第二次就会卡住，连LED的也不闪了，好像整个系统都卡住了
下面是LED的任务

1. 
   
2. void vTask_LED_RED(void *vParameters){
   
3. while(1){
   
4.   LED_Switch(LED_RED,TURN_OFF);
   
5.   printf("LED_RED is OFF\n");
   
6.   vTaskDelay(1000/portTICK_RATE_MS); //Delay 1 sec
   
7.   LED_Switch(LED_RED,TURN_ON);
   
8.   printf("LED_RED is ON\n");
   
9.   vTaskDelay(1000/portTICK_RATE_MS);
   
10. }
    
11. }
    
12. void vTask_LED_BLUE(void *vParameters){
    
13. while(1){
    
14.   LED_Switch(LED_BLUE,TURN_ON);
    
15.   printf("LED_BLUE is ON\n");
    
16.   vTaskDelay(1000/portTICK_RATE_MS);
    
17.   LED_Switch(LED_BLUE,TURN_OFF);
    
18.   printf("LED_BLUE is OFF\n");
    
19.   vTaskDelay(1000/portTICK_RATE_MS);
    
20. }
    
21. }
    

复制代码

下面是串口打印的数据

1. 
   
2. 正在配置 ESP8266 ......
   
3. CH Enable Done!
   
4. LED_RED is OFF
   
5. LED_BLUE is ON
   
6. LED_RED is ON
   
7. LED_BLUE is OFF
   
8. AT Test Done!
   
9. LED_RED is OFF
   
10. LED_BLUE is ON
    
11. LED_RED is ON
    
12. LED_BLUE is OFF
    
13. Choose STA Net Mode Done!
    
14. LED_RED is OFF
    
15. .......  //这里各种 ON 和 OFF最多，可能是加入AP比较耗时间
    
16. LED_BLUE is OFF
    
17. Join AP Done!
    
18. LED_RED is OFF
    
19. LED_BLUE is ON
    
20. Disable MultipleId Done!
    
21. LED_RED is ON
    
22. LED_BLUE is OFF
    
23. LED_RED is OFF
    
24. LED_BLUE is ON
    
25. LED_RED is ON
    
26. LED_BLUE is OFF
    
27. LED_RED is OFF
    
28. LED_BLUE is ON
    
29. Link Server Done!
    
30. LED_RED is ON
    
31. LED_BLUE is OFF
    
32. Start UnvarnishSend Done!
    
33. 配置 ESP8266 完毕
    
34. Send GET Request Done!
    
35. Recive Function In!
    
36. Recive Function set Done!      //第一次就没问题
    
37. Recive Function while Done!
    
38. add \0 Done!
    
39. Recive Function Finished!
    
40. CLOSED
    
41. HTTP/1.1 200 OK
    
42. Server: nginx
    
43. Date: Thu, 20 Oct 2016 09:44:46 GMT
    
44. Content-Type: text/html
    
45. Content-Length: 163
    
46. Last-Modified: Thu, 25 Jun 2015 03:08:19 GMT
    
47. Connection: close
    
48. Accept-Ranges: bytes
    
49. <html>
    
50.     <head>
    
51.         <meta http-equiv="refresh" content="0; url=http://hndnserror7.wo.com.cn:8080/sj/index.html" />
    
52.     </head
    
53.     <body>
    
54.     </body>
    
55. </html>
    
56. LED_RED is OFF
    
57. LED_BLUE is ON
    
58. LED_RED is ON
    
59. LED_BLUE is OFF
    
60. LED_RED is OFF
    
61. LED_BLUE is ON
    
62. LED_RED is ON
    
63. LED_BLUE is OFF
    
64. LED_RED is OFF
    
65. LED_BLUE is ON
    
66. Send GET Request Done!
    
67. Recive Function In!
    
68. Recive Function set Done!    //问题就出在这了，这是第二次发送
    
69. 
    

复制代码

Recive Function In!
Recive Function set Done!这几句是在char * ESP8266_ReceiveString ( FunctionalState enumEnUnvarnishTx )函数里

1. 
   
2. char * ESP8266_ReceiveString ( FunctionalState enumEnUnvarnishTx ){
   
3. 
   
4. char * pRecStr = 0;
   
5. 
   
6. printf("Recive Function In!\n");
   
7. 
   
8. strEsp8266_Fram_Record .InfBit .FramLength = 0;
   
9. strEsp8266_Fram_Record .InfBit .FramFinishFlag = 0;
   
10. 
    
11. printf("Recive Function set Done!\n");
    
12. 
    
13. while ( ! strEsp8266_Fram_Record .InfBit .FramFinishFlag );
    
14. printf("Recive Function while Done!\n");
    
15. strEsp8266_Fram_Record .Data_RX_BUF [ strEsp8266_Fram_Record .InfBit .FramLength ] = '\0';
    
16. printf("add \\0 Done!\n");
    
17. 
    
18. if ( enumEnUnvarnishTx )
    
19.   pRecStr = strEsp8266_Fram_Record .Data_RX_BUF;
    
20. else
    
21. {
    
22.   if ( strstr ( strEsp8266_Fram_Record .Data_RX_BUF, "+IPD" ) )
    
23.    pRecStr = strEsp8266_Fram_Record .Data_RX_BUF;
    
24. }
    
25. printf("Recive Function Finished!\n");
    
26. return pRecStr;
    
27. }
    

复制代码

随风

估计是卡在esp8266的中断里了，连调试都卡住

yenhgng001

随风 发表于 2016-10-20 19:31
估计是卡在esp8266的中断里了，连调试都卡住

后来我尝试了一下，发现是因为我第二次发出去的请求没有响应，导致一直死循环等待响应，而esp8266的任务又是最高优先级，所以一直处于死循环，其他任务得不到执行。我尝试将请求发送到超级终端，然后手动响应一些东西（随便写点什么发过去），结果系统收到响应之后又继续正常执行了。或者调整优先级，把LED调的比ESP8266高,这样esp的死循环就不会影响LED了

flyleaf

yenhgng001 发表于 2016-10-20 23:17
后来我尝试了一下，发现是因为我第二次发出去的请求没有响应，导致一直死循环等待响应，而esp8266的任务 ...

把它设置成最高优先级是正确的，接收数据肯定比亮LED灯重要。
只要在循环等待的时候，加上系统的延时，这样的话，其它任务就有机会执行了

yenhgng001

flyleaf 发表于 2016-10-21 08:53
把它设置成最高优先级是正确的，接收数据肯定比亮LED灯重要。
只要在循环等待的时候，加上系统的延时， ...

好的，多谢