AMiRo-OS

  /**

   * @brief   Calculates n-th address based on address of register 0.

   * @details Calculation: <scale value> = log2(<scaling factor>

   * )

   * @param[in]   base    Base address = frist register

   * @param[in]   inc     Jump to the next register inc times

   *

   * @return    Calculated register address

   */

  inline at42qt1050_lld_register_t at42qt1050_lld_addr_calc(const at42qt1050_lld_register_t base, const uint8_t inc) {

    apalDbgAssert(inc < 5);

    uint8_t double_result = 0; //16bit access

    switch (base) {

      case AT42QT1050_LLD_REG_KEYSIGNAL_0:         //2 4 2 2

      case AT42QT1050_LLD_REG_REFERENCEDATA_0:     //2 4 2 2

        double_result = 1;

      case AT42QT1050_LLD_REG_NEGATIVETHRESHOLD_0: //1 2 1 1

      case AT42QT1050_LLD_REG_PULSE_SCALE_0:       //1 2 1 1

      case AT42QT1050_LLD_REG_INTEGRATOR_AKS_0:    //1 2 1 1

      case AT42QT1050_LLD_REG_CHARGESHAREDELAY_0:  //1 2 1 1

      {

        uint8_t increase = ((inc>1)?inc+1:inc);

        return (at42qt1050_lld_register_t) (((uint8_t) base)+(increase << double_result));

      }

      default:

      {

        apalDbgPrintf("invalid base register 0x%04X\n", base);

        return (at42qt1050_lld_register_t) 0xFF; //does not exist

      }

    }

  }