we used RAKDAP1 to debug RAK31720 AND have followed all the steps as per the guide we got the same output as the memory erased but still the AT command is not working and the code is not uploading.
Could you help me to solve the issue.
Hi @moses ,
Few things you can check and try.
- Ensure that that baud rate is 11520.
- Try to send
AT,AT+VER=?orAT+RUN. If no replies, somethings is wrong on the UART pins. Confirm if UART wirings is stable. If these are jumper wires, that can be a possible reason. - Try to use different USB-Serial converter.
I checked all 3 check list you have given but the same thing is repeating.I have changed the jumper wire and the USB-Serial converter but no response from the board.Is there is any other thing i need to check to sort out this issue.
Just an idea to check the connectivity and your USB-Serial converter.
- Get STM32CubeProgrammer
- Connect device with your USB Serial converter to the computer
- Pull BOOT0 pin to 3V3
- Power up the RAK3172 (or initiate a RESET)
- Select correct USB port (under UART) in STM32CubeProgrammer
- Then push Connect
- If your USB Serial converter is connected correct, STM32CubeProgrammer can connect to the RAK3172
- If the connection does not work, you will get an error message
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