Home Page › Forums › Raspberry Pi Shields › Unable to use UART for AT commands.
Tagged: AT, EC25, UART
I’ve got a https://sixfab.com/product/quectel-ec25-mini-pcle-4glte-module/ together with a https://sixfab.com/product/raspberry-pi-3g-4glte-base-shield-v2/.
My problem is that I can not make the EC25 accept AT commands on the UART port i.e. the port that goes to serial I/O pins on the Raspberry Pi pin header. Operating through USB is OK though but I would prefer the UART.
You will need to short the UART RESISTOR pads, available under the shield.
For AT commands, minicom or any serial monitor can be used.
Thank you. Had not looked on the back side of the shield :-).