Regarding how to use AT command

[Seeli Powlin]

Hi ,
Can any one show me a small example regarding how to use AT commands inside the main() ?

 

[TiagoRibeiro]

This is my code in MPLABX C18 Compiler.
The command1 has the function to put the GSM module in mode to send SMS, after that just send another command along with the number you want to send the message then just write your message
hope this helps.:wink:

void main(){
         char command1[]="\r\nAT+CMGF=1\r\n";
         char command2[]="AT+CMGS=\"phonenumber\"\r";
         char command3[]="https://maps.google.com/maps?q=";
         Delay10KTCYx(200);
         puts1USART(command1);
         Delay10KTCYx(200);
         puts1USART(command2);
         Delay10KTCYx(200);
         puts1USART(command3);
}

 

[Seeli Powlin]

This is my code in MPLABX C18 Compiler.
The command1 has the function to put the GSM module in mode to send SMS, after that just send another command along with the number you want to send the message then just write your message
hope this helps.:wink:

void main(){
         char command1[]="\r\nAT+CMGF=1\r\n";
         char command2[]="AT+CMGS=\"phonenumber\"\r";
         char command3[]="https://maps.google.com/maps?q=";
         Delay10KTCYx(200);
         puts1USART(command1);
         Delay10KTCYx(200);
         puts1USART(command2);
         Delay10KTCYx(200);
         puts1USART(command3);
}

Hi,
Thank you for your reply.

For suppose, If i use some AT command, it should respond like OK.
For example:
1. Send command AT+GMR<cr>
2. Wait for response OK


Where this OK gets stored?
How i can check this?
Do i need to code for that OK response?
Guide me.

 

[TiagoRibeiro]

If you want to make a confirmation of OK, you need a UART for receiving char and store in a variable. After that u compare with another variable that has the expected data.
Or you can search for characters to receive, eg 'O' or 'K', or 'O' and 'K', so you do not need to use the memory space to store variables to compare.
This code I showed you, simply sends the command and waits a delay time to send the next. It worked for my tests. But do it the way u think this is safer for a stand-alone application.

 

[Seeli Powlin]

If you want to make a confirmation of OK, you need a UART for receiving char and store in a variable. After that u compare with another variable that has the expected data.
Or you can search for characters to receive, eg 'O' or 'K', or 'O' and 'K', so you do not need to use the memory space to store variables to compare.
This code I showed you, simply sends the command and waits a delay time to send the next. It worked for my tests. But do it the way u think this is safer for a stand-alone application.

Hi,
Thank you.

 

[TiagoRibeiro]

Look at this thread might help you with the codes...
https://www.edaboard.com/threads/303644/

 

[Seeli Powlin]

Hi,
Thank you.
I got your points and wrote codes.