Skip to content

Latest commit

 

History

History
22 lines (14 loc) · 1.33 KB

README.md

File metadata and controls

22 lines (14 loc) · 1.33 KB
Raw

Pico W Bluetooth Examples

The source for most of the Bluetooth examples is stored in pico-sdk/lib/btstack/example. There's a standalone example in pico-examples/pico_w/bt/standalone.

Debugging

To debug Bluetooth issues you can enable btstack debug output which also enables packet logging. Define WANT_HCI_DUMP=1 in your CMakeLists.txt file. Uncomment this line to enable debug in the btstack examples.

target_compile_definitions(picow_bt_example_common INTERFACE
    #WANT_HCI_DUMP=1 # This enables btstack debug
    )

Packet logging

To view packet logs, save the output from the debug port (e.g. the uart) to a file and afterwards run pico-sdk/lib/btstack/tool/create_packet_log.py <filename>. This will generate a file with the same name except for a pklg extension. This can be opened in the Wireshark application to analyze communications activity.

Link keys

By default, the last two sectors of flash are used to store Bluetooth link keys and this relies on the Bluetooth address. Old pre-release versions of the SDK had issues with some devices using a default Bluetooth address. If you experience issues with pairing try Resetting flash memory, see https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html#resetting-flash-memory