尝试在HTTP post中读取响应后出错

我正在研究PIC24F微控制器与M95 quectel调制解调器接口的HTTP协议

我正在尝试“POST”方法。我已经阅读了quectel的HTTP协议数据表

以下是发送HTTP post请求AT命令：

AT+QIFGCNT
AT+QHTTPURL
AT+QHTTPPOST
AT+QHTTPREAD
AT+QIDEACT

我根据这个流程顺序编写代码。我将这些命令放在无限while循环中。 第一次成功地从服务器读取响应时，没有问题，但后来出现了一个错误，如“http响应失败”或 位于+QHTTPREAD的“http获取无请求”

我必须重复整个HTTP post AT命令，还是只重复AT+QHTTPREAD命令

代码：

---

如果您使用的是相同的URL，那么就不需要了，只需从AT+QHTTPPOST开始

如果另一个URL用于另一个内容，则从AT+GHTTPURL开始

bool SendAtCommand_Response(char *command, char *response,int Delay);

    while(1)
{

                SendAtCommand_Response("AT\r","OK",500);
                uart1str("Modem is ready\r\n");
                Delayms(2000);
                uart1str("\r\n");
                clear();                        //clear response buffer
                SendAtCommand_Response("AT+CPIN?\r","OK",2000);
                Delayms(300);
                uart1str("\r\n");
                clear();
                SendAtCommand_Response("AT+QIFGCNT=0\r","OK",500);
                Delayms(300);
                uart1str("\r\n");
                clear();
                SendAtCommand_Response("AT+QICSGP=1,\"airtelGPRS.com\"\r","OK",500);
                Delayms(500);
                uart1str("APN is set\r\n");
                uart1str("\r\n");
                clear();
                SendAtCommand_Response("AT+QHTTPURL=37,30\r","CONNECT",500);
                uart1str("URL is set\r\n");
                clear();
                SendAtCommand_Response(HTTP_POST_URL_HS ,"OK",500);
                Delayms(500);
                uart1str("URL Sent\r\n");
                clear();
                SendAtCommand_Response("AT+QHTTPPOST=22,25,10\r","CONNECT",1000);
                Delayms(1000);
                uart1str("\r\n");
                clear();
                SendAtCommand_Response("imeino=865733024598757","OK",100);
                Delayms(1000);
                uart1str("HTTP data sent\r\n");
                uart1str("\r\n");
                clear();
                SendAtCommand_Response("AT+QHTTPREAD=30\r","CONNECT",3000);
                Delayms(200);
                clear();
                SendAtCommand_Response("AT+QIDEACT\r","DEACT OK",500);
                Delayms(200);
                clear();

}