CircuitPython BLE
CircuitPython BLE UART Example
It's easy to use Adafruit AirLift ESP32 co-processor boards for Bluetooth Low Energy
(BLE) with CircuitPython. When you reset the ESP32, you can put it in WiFi mode (the
default), or in BLE mode; you cannot use both modes simultaenously.
Here's a simple example of using BLE to connect CircuitPython with the Bluefruit
Connect app. Use CircuitPython 6.0.0 or later.
Note: Don't confuse the ESP32 with the ESP32-S2, which is a different module with a
similar name. The ESP32-S2 does not support BLE.
Adafruit Airlift Bitsy ESP32 Add-On Wiring
If you have an Adafruit Airlift Bitsy ESP32 Add-On, you will need to solder three
jumpers closed on the bottom side of the board to enable BLE. The rest of the ESP32
pins you need are already jumpered to certain ItsyBitsy pins.
Update the AirLift Firmware
You will need to update the AirLift's firmware to at least version 1.7.1. Previous versions
of the AirLift firmware do not support BLE.
Follow the instructions in the guide below, and come back to this page when you've
upgraded the AirLift's firmware:
Upgrade External ESP32 AirLift
https://adafru.it/RdC
Currently the AirLift support for CircuitPython only provides BLE peripheral
support. BLE central is under development. So you cannot connect to BLE
devices like Heart Rate monitors, etc., but you can act as a BLE peripheral
yourself.
©Adafruit Industries
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