Currently Bluetooth support is limited to AVR based chips. For Bluetooth 2.1, QMK has support for RN-42 modules. For more recent BLE protocols, currently only the Adafruit Bluefruit SPI Friend is directly supported. BLE is needed to connect to iOS devices. Note iOS does not support mouse input.
|[Bluefruit LE SPI Friend](https://www.adafruit.com/product/2633)|Bluetooth Low Energy|SPI |`BLUETOOTH_DRIVER = AdafruitBLE`|nRF51822 |
Not Supported Yet but possible:
* [Bluefruit LE UART Friend](https://www.adafruit.com/product/2479). [Possible tmk implementation found in](https://github.com/tmk/tmk_keyboard/issues/514)
@ -23,16 +23,17 @@ Currently The only bluetooth chipset supported by QMK is the Adafruit Bluefruit
A Bluefruit UART friend can be converted to an SPI friend, however this [requires](https://github.com/qmk/qmk_firmware/issues/2274) some reflashing and soldering directly to the MDBT40 chip.
<!-- FIXME: Document bluetooth support more completely. -->
## Bluetooth Rules.mk Options
The currently supported Bluetooth chipsets do not support [N-Key Rollover (NKRO)](reference_glossary.md#n-key-rollover-nkro), so `rules.mk` must contain `NKRO_ENABLE = no`.