text: #ifndef _HAL_KEYFOB_RECEIVER_H_
  #define _HAL_KEYFOB_RECEIVER_H_
  
   /**
   * @defgroup hal_keyfob HAL Keyfob Receiver Module
   * @ingroup keyfob
   * @file hal_keyfob_receiver.h
   *
   * @author Chris Fredrickson
   * 
   * @{
   */
  
  /** Override default bit times to avoid conversion to us each time
   * 
   * These defines may need to change for the MSP430F5529
   */
  #ifndef KEYFOB_MIN_TIME_UNIT
  #define KEYFOB_MIN_TIME_UNIT ((280 * FCPU) / 16000000) //280us
  #endif
  
  #ifndef KEYFOB_MAX_TIME_UNIT
  #define KEYFOB_MAX_TIME_UNIT ((520 * FCPU) / 16000000) //520us
  #endif
  
  /** Initialize hardware required to measure time (in microseconds) between edges.
   * 
   */
  void hal_Keyfob_Init(void);
  
  /** @} */
  #endif // _HAL_KEYFOB_RECEIVER_H_
  