I have an AS923 RAK 5205 and I am using the recommended RAK Serial Port Tool. However, any AT command I sent only prompts an “ERROR: 86” message, which corresponds to “The device has not joined a LoRa network” based on the AT command manual.
I don’t have a gateway that supports AS923 currently, which is why I am trying to change the region of the RAK 5205 device using “at+set_config=lora:region:US915”
I am quite confused about why this is even happening because AT commands are simply serial commands and shouldn’t require the device to join a LoRa network. How can I debug this?
Thank you!
Consistent ERROR: 86 whenever I send an AT command
I have also tried to write to serial port using pyserial and monitor using minicom, what other alternatives are there?
FYI, I have tried another device (in US915 region) on the same computer and the same software, and all AT commands work fine (even when it has not joined a LoRa network) @carlrowan
What FW version you tried to upload? Via STM32CubeProg or via RAK DFU? Did you perform an erase first if you use STM32CubeProg?
If you erase the FW (no new FW uploaded yet) and you try to send AT command, did you receive any reply (just for sanity check but we should expect no reply since it is empty).
STM32CubeProg, and I did erase it before burning the image.
I tried your sanity test and the reply is empty as expected (empty as in just empty spaces) @carlrowan