How can we control the RAK3172 over UART using the ESP32?

[mehmet]

I want to control rak3172 module over the ESP32 S3 boart via using UART. I want to send AT Commands to board and connect lorawan and start to comminicate. I found that library but I cant use it. “For a simple example, how can we check the version of the RAK3172 from the ESP32 with AT commands? (AT+VER=?)” I am using Arduino also

my circuit

also uart is woking good. I can send data each other esp32 to rak.

if I use serial monitor of Arduino IDE to check version
OUTPUT:

11:25:30.131 -> AT+VER=RUI_4.2.0_RAK3172-E
11:25:30.131 -> OK

[beegee (Bernd Giesecke)]

Answered you in GitHub

On the RAK31723 Evaluation Board, AT commands work only over the USB (== UART2).
If you need UART1 (ATTENTION UART1 does not work in low power mode) you have to explicit enable it with Serial1.begin(115200, RAK_AT_MODE);

[mehmet]

Yes I understood at least. schematic should like this. if esp32 send at command over the serial1 to rak3172’s serial1. rak will retrun the respond on serial1 again.