receiving message to PIC through GSM modem

[pic+gsm]

Can someone help me pleas I am not sure how I can receive a text message from the GSM such as LED1ON and switch an LED1 on I have tried few ways but I can’t make it work

void readtheUSART(char *recbuffer)
 {
    unsigned char recivedata;

       do 
		{
		       recivedata = ReadUSART();
		       *recbuffer++ = recivedata;
		}
	 while (recivedata != '\n');  
}

/////////////////////////////////////////////
// in my main 
////////////////////////////////////////////

    char readmessage[10];
    char readnewline[50];
    char message_index;
    
    // Set Text Mode
	Comm("AT+CMGF=1\r\n");
    delay(300);

    
    // Read last SMS
    delay(300);
   for (aa= 0; aa<13; aa++)  //  recv2 = AT+CMGR=1\r\n;
	{
        if (recv2[aa] == 0)
            break;
       WriteUSART(recv2[aa]);
        while ( BusyUSART() );
    }

    // Read +CMGL: <index>,<status>,<from_address>,<mr>,<scts>
    readtheUSART(readnewline);
    // Read message led1on, led1off 
    readtheUSART(readmessage);
    // Read newline
    readtheUSART(readnewline);
    
    // Read message and return the value back
    if(memcmp("LED1ON", &readmessage, 6) == 0) {
        led1 = 1;
    } else if(memcmp("LED1OFF", &readmessage, 7) == 0) {
        led1 = 0;
    }
    
    // Delete last message
    delay(300);
	for (aa= 0; aa<13; aa++)  //   recv3 = AT+CMGD=1\r\n
	{
        if (recv3[aa] == 0)
            break;
        WriteUSART(recv3[aa]);
       while ( BusyUSART() );
    }

 

[siongboon]

What is your GSM modem?
What are you using to receive the message?

Can someone help me pleas I am not sure how I can receive a text message from the GSM such as LED1ON and switch an LED1 on I have tried few ways but I can’t make it work

void readtheUSART(char *recbuffer)
 {
    unsigned char recivedata;

       do 
		{
		       recivedata = ReadUSART();
		       *recbuffer++ = recivedata;
		}
	 while (recivedata != '\n');  
}

/////////////////////////////////////////////
// in my main 
////////////////////////////////////////////

    char readmessage[10];
    char readnewline[50];
    char message_index;
    
    // Set Text Mode
	Comm("AT+CMGF=1\r\n");
    delay(300);

    
    // Read last SMS
    delay(300);
   for (aa= 0; aa<13; aa++)  //  recv2 = AT+CMGR=1\r\n;
	{
        if (recv2[aa] == 0)
            break;
       WriteUSART(recv2[aa]);
        while ( BusyUSART() );
    }

    // Read +CMGL: <index>,<status>,<from_address>,<mr>,<scts>
    readtheUSART(readnewline);
    // Read message led1on, led1off 
    readtheUSART(readmessage);
    // Read newline
    readtheUSART(readnewline);
    
    // Read message and return the value back
    if(memcmp("LED1ON", &readmessage, 6) == 0) {
        led1 = 1;
    } else if(memcmp("LED1OFF", &readmessage, 7) == 0) {
        led1 = 0;
    }
    
    // Delete last message
    delay(300);
	for (aa= 0; aa<13; aa++)  //   recv3 = AT+CMGD=1\r\n
	{
        if (recv3[aa] == 0)
            break;
        WriteUSART(recv3[aa]);
       while ( BusyUSART() );
    }

 

[pic+gsm]

What is your GSM modem? my GSM is using AT commands (TC35)
What are you using to receive the message? pic 18F

 

[siongboon]

Do you know how to receive text message using PIC18?

What is your GSM modem? my GSM is using AT commands (TC35)
What are you using to receive the message? pic 18F

 

[pic+gsm]

look at this page it might help u..

https://tutorial.cytron.com.my/2011/12/08/control-and-monitor-via-sms/comment-page-1/#comment-90392