AT+CMGL="ALL" ,hyperterminal في

  while(1) {
    GM862_Send(atc0);                 // Send "AT" string until GSM862 sets up its baud rade
    Delay_ms(100);                    // and gets it correctly
    if (Get_response() == GSM_OK)     // If GSM862 says "OK" on our baud rate we program can continue
      break;
  }

 GM862_Send(atc1);        // Disable command echo
 Wait_response(GSM_OK);

 GM862_Send(atc2);        // Set message type as TXT
 Wait_response(GSM_OK);

 while(1){
   GM862_Send(atc5);      // Delete all messages (if any)
   if (get_response() == GSM_OK) // If messages are deleted
     break; // break from while
   Delay_ms(500);
 }
 // blink as a sign that initialization is successfully completed
 Digital_OUTPUT = 0xFF;
 Delay_ms(500);
 Digital_OUTPUT = 0;

  // infinite loop
  while(1) 
  {
    GM862_Send(atc6);        // Read status of the messages and read message it self  "AT+CMGL=\"ALL\"";
    Delay_ms(100);           // Wait until the message is read

    while(1) 
    {
      GM862_Send(atc0);      // Wait until the module is ready   "AT";
      Delay_ms(50);
      if (Get_response() == GSM_OK)
        break;
    }

    if (Unread_flag)
    {
      if (PORT_flag)
      {        // Turn ON/OFF port D LEDs if there were new commands
        PORT_flag = 0;
        Digital_Output = Digital_O;
      }

      while(1) 
      {
        GM862_Send(atc0);    // Wait until the module is ready
        Delay_ms(50);
        if (Get_response() == GSM_OK)
          break;
      }

      if (status_req)
      {       // Send status SMS if it's been requested
        status_req = 0;
        Send_Status();
      }

      Unread_flag = 0;
    }

    while(1)
    {
      GM862_Send(atc5);  // Delete all messages (if any)
      Delay_ms(50);
      if (get_response() == GSM_OK) // If messages are deleted
        break;           // break from while
      Delay_ms(50);
      if (Unread_flag)
      {  // if we have received message in mean time
        Unread_flag = 0;
        break;           // break from while
      }
    }
    Wait();
  }
}

// Set of basic AT commands
const char atc0[] = "AT";                        // Every AT command starts with "AT"
const char atc1[] = "ATE0";                      // Disable command echo
const char atc2[] = "AT+CMGF=1";                 // TXT messages
      char atc3[] = "AT+CMGS=\"";                // sends SMS to desired number
const char atc4[] = "AT+CMGR=1";                 // Command for reading message from location 1 from inbox
const char atc5[] = "AT+CMGD=1,4";               // Erasing all messages from inbox
const char atc6[] = "AT+CMGL=\"ALL\"";           // Check status of received SMS
//

// Negotiate baud rate
  while(1) {
    GM862_Send(atc0);                            // Send "AT" string until GSM862 sets up its baud rade
    Delay_ms(100);                               // and gets it correctly
    if (Get_response() == GSM_OK)                // If GSM862 says "OK" on our baud rate we program can continue
      break;
  }
//

 GM862_Send(atc1);         // Disable command echo
 Wait_response(GSM_OK);

 GM862_Send(atc2);         // Set message type as TXT
 Wait_response(GSM_OK);

 GM862_Send(atc5);         // Delete all messages (if any)
 Wait_response(GSM_OK);

 Send_Status();            // Send Status after power-up
 Wait();

  while(1) {
    GM862_Send(atc4);      // Read SMS message on location 1

    while (1){
       rsp = Get_response();
       if (rsp == GSM_OK || rsp == GSM_ERROR) break;
    }

    if (status_req){       // Send status SMS if it's been requested
      status_req = 0;
      Send_Status();
     }

    if (rsp == GSM_OK){
    Wait();
    GM862_Send(atc5);      // Delete all messages (if any)

    while (1){
      rsp = Get_response();
      if (rsp == GSM_OK) break;
     }

    }
     Wait();
 }
}

// Negotiate baud rate
  while(1) {
    GM862_Send(atc0);                            // Send "AT" string until GSM862 sets up its baud rade
    Delay_ms(100);                               // and gets it correctly
    if (Get_response() == GSM_OK)                // If GSM862 says "OK" on our baud rate we program can continue
      break;
  }
//

 GM862_Send(atc1);         // Disable command echo
 Wait_response(GSM_OK);

 GM862_Send(atc2);         // Set message type as TXT
 Wait_response(GSM_OK);

 GM862_Send(atc5);         // Delete all messages (if any)
 Wait_response(GSM_OK);