rak3272S serial communication

WisBlock
1

We are testing the serial communication of the RAK3272S breakout board. When using Arduino IDE or the RAK_SERIAL_PORT TOOL provided by your company, the command “at+ver=?” works and responds normally. However, when using a general serial program like PortMon, we do not receive any response (photo attached). Is there any difference we should be aware of?

The RAK3272S is connected to the computer via USB to TTL. The power and ground are connected, and RX is connected to TX, and TX is connected to RX. The settings are 115200, 8N1. And I used a uart 2-pin.

스크린샷 2024-09-27 205352
스크린샷 2024-09-27 2053521162×374 131 KB

2

When you use a “standard” serial terminal, make sure that the commands are sent with a trailing CR/LF. Otherwise the device will ignore the commands.

I am not sure how to set this in SerialPortMon, seems to be a very old application, I can’t find it.