Hello, I am using simple_at program to send sms. But it is not working. Commands like AT+CFUN?, AT+CFUN=1, AT+CEREG? are working, but when i use AT+CMGS command, other commands appear on the terminal and it shows error. I am not able to send sms.

[Jagruti]

[MJD093]

Hi there,

It looks like you are using the wrong AT application for what you are trying to do.

The simple_at application is designed to demonstrate hardcoded at commands one at a time and then shutdown. This application does not offer the ability to accept UART messages and run them, it is simply a demo program that runs and then sits idle until a reset.

The at_client application found in the ncs repository is an AT application that you can manually enter AT commands via the USB-UART bridge using the LTE Link Monitor for nRF Connect. If you flash that application to your device, you can enter all the commands you have tried to send in the image above.

[Jagruti]

Hi,

I have not send those commands, this is the output when I run the program "simple_at". I have modified simple_at program. 

I wrote these AT commands in the program: "AT+CGMM", "AT+CGDCONT?", "AT%XCBAND=?", "AT+CGSN=1",
"AT+CESQ", "AT+CFUN?", "AT+CFUN=1", "AT+CFUN?", "AT+CEREG?",
"AT%XSIM=1", "AT%XSIM?", "AT+CFUN?", "AT+CFUN=1",
"AT+CNMI=3,2,0,1", "AT+CNMI?"