RAK11160 : Custom Bluetooth Services on ESP32-C2

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1

Hi Rak Team,

I am currently working with the RAK11160 module. I understand that the default firmware allows us to use AT commands to manage Wi-Fi and Bluetooth connectivity effectively. Also, I know that we can flash custom firmware to the esp32-c2.

My specific question are:

  1. Is it possible to develop and run our own custom Bluetooth services directly on the internal ESP32-C2 chip?

  2. If the above is correct and we upload custom code to the ESP32-C2, I assume this overwrites the factory AT command firmware. Is that correct?

2

Welcome to the forum @Yohanjoseph

Yes, you can flash a custom firmware on the ESP32-C2 of the RAK11160.
The STM32WLE5 will still support AT commands for LoRa and LoRaWAN and it will keep the option to connect the ESP32-C2’s UART to the main UART of the module. But the ESP32-C2 will no longer support the Espressif AT commands to control WiFi and BLE. You will have to handle this inside your custom application.

3

Hi Bernd,

Thank you for the quick response! That clarifies the firmware situation.

Is there a way to add Bluetooth services without completely overwriting the factory firmware in the ESP32-C2?

4

I am not very familiar with the Espressif AT command interface, but according to Espressif AT Command Set there are commands to use Bluetooth.

5

Hi Bernd,

Thank you for the information.