message: Actually declare enc_index_cb
diff: @@ -193,6 +193,7 @@ void set_vel_setpoint(Motor_t* motor, float vel_setpoint, float current_feed_for
  void set_current_setpoint(Motor_t* motor, float current_setpoint);
  void step_cb(uint16_t GPIO_Pin);
  +void enc_index_cb(uint16_t GPIO_Pin, uint8_t motor_index);
  void pwm_trig_adc_cb(ADC_HandleTypeDef* hadc, bool injected);
  void vbus_sense_adc_cb(ADC_HandleTypeDef* hadc, bool injected);
  