Source code of the firmware running in the Crazyflie 2.X nRF51822. This microcontroller has a couple of roles:
- Power management (ON/OFF logic and battery handling)
- Radio communication
- Enhanced Shockburst compatible with Crazyradio (PA)
- Bluetooth low energy using the Nordic Semiconductor S130 stack
- One-wire memory access
- Output a 8mhz high precision clock to STM32 (only on brushless and without BLE).