Modem AT commands

General
1

Hi, I have a LTE CAT1 PI hat (Seeed) on my Rpi and I’m trying to use node-red to configure the APN using AT commands and the UART connection.
If I send:
**msg.payload=“AT/r/n”; **
return msg;
I get “OK” from the modem, if I want to set the APN I need to send AT+UPSD=0,1,”APN.name”
Can anyone tell me how I put this command into a payload?

2

With an inject node.

3

I think his/her problem is around the quotes.

Inject node set to string:

AT+UPSD=0,1,\”APN.name\”/r/n
1 Like
4

Ah yes, sorry, I answered too quickly!

5

Hi all, sorted it! I needed to use single quotes
Msg.payload = ‘AT+UPSD=0,1,”APN.name” \r\n’