text: /* --COPYRIGHT--,BSD
   * Copyright (c) 2013, Texas Instruments Incorporated
   * All rights reserved.
   *
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   *
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   *    notice, this list of conditions and the following disclaimer.
   *
   * *  Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
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   *    its contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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   * --/COPYRIGHT--*/
  //*****************************************************************************
  //
  //wdt_a.c - Driver for the WDT_A Module.
  //
  //*****************************************************************************
  #include "inc/hw_regaccess.h"
  #include "wdt_a.h"
  #ifdef  __IAR_SYSTEMS_ICC__
  #include "deprecated/IAR/msp430xgeneric.h"
  #else
  #include "deprecated/CCS/msp430xgeneric.h"
  #endif
  #include "assert.h"
  
  //*****************************************************************************
  //
  //! Holds the Watchdog Timer.
  //!
  //! \param baseAddress is the base address of the WDT_A module.
  //!
  //! This function stops the watchdog timer from running, that way no interrupt
  //! or PUC is asserted.
  //!
  //! \return None
  //
  //*****************************************************************************
  void WDT_A_hold (uint32_t baseAddress)
  {
      //Set Hold bit
      uint8_t newWDTStatus = ( HWREG8(baseAddress + OFS_WDTCTL_L) | WDTHOLD );
  
      HWREG16(baseAddress + OFS_WDTCTL) = WDTPW + newWDTStatus;
  }
  
  //*****************************************************************************
  //
  //! Starts the Watchdog Timer.
  //!
  //! \param baseAddress is the base address of the WDT_A module.
  //!
  //! This function starts the watchdog timer functionality to start counting
  //! again.
  //!
  //! \return NONE
  //
  //*****************************************************************************
  void WDT_A_start (uint32_t baseAddress)
  {
      //Reset Hold bit
      uint8_t newWDTStatus =
          ( HWREG8(baseAddress + OFS_WDTCTL_L) & ~(WDTHOLD) );
  
      HWREG16(baseAddress + OFS_WDTCTL) = WDTPW + newWDTStatus;
  }
  
  //*****************************************************************************
  //
  //! Clears the timer counter of the Watchdog Timer.
  //!
  //! \param baseAddress is the base address of the WDT_A module.
  //!
  //! This function clears the watchdog timer to 0x0000h.
  //!
  //! \return None
  //
  //*****************************************************************************
  void WDT_A_resetTimer (uint32_t baseAddress)
  {
      //Set Counter Clear bit
      uint8_t newWDTStatus =
          ( HWREG8(baseAddress + OFS_WDTCTL_L) | WDTCNTCL );
  
      HWREG16(baseAddress + OFS_WDTCTL) = WDTPW + newWDTStatus;
  }
  
  //*****************************************************************************
  //
  //! Sets the clock source for the Watchdog Timer in watchdog mode.
  //!
  //! \param baseAddress is the base address of the WDT_A module.
  //! \param clockSelect is the clock source that the watchdog timer will use.
  //!        Valid values are
  //!        \b WDT_A_CLOCKSOURCE_SMCLK [Default]
  //!        \b WDT_A_CLOCKSOURCE_ACLK
  //!        \b WDT_A_CLOCKSOURCE_VLOCLK
  //!        \b WDT_A_CLOCKSOURCE_XCLK
  //!        Modified bits are \b WDTSSEL of \b WDTCTL register.
  //! \param clockDivider is the divider of the clock source, in turn setting the
  //!       watchdog timer interval.
  //!        Valid values are
  //!        \b WDT_A_CLOCKDIVIDER_2G
  //!        \b WDT_A_CLOCKDIVIDER_128M
  //!        \b WDT_A_CLOCKDIVIDER_8192K
  //!        \b WDT_A_CLOCKDIVIDER_512K
  //!        \b WDT_A_CLOCKDIVIDER_32K [Default]
  //!        \b WDT_A_CLOCKDIVIDER_8192
  //!        \b WDT_A_CLOCKDIVIDER_512
  //!        \b WDT_A_CLOCKDIVIDER_64
  //!        Modifed bits are \b WDTIS and \b WDTHOLD of \b WDTCTL register.
  //!
  //! This function sets the watchdog timer in watchdog mode, which will cause a
  //! PUC when the timer overflows. When in the mode, a PUC can be avoided with a
  //! call to WDT_A_resetTimer() before the timer runs out.
  //!
  //! \return None
  //
  //*****************************************************************************
  void WDT_A_watchdogTimerInit (uint32_t baseAddress,
      uint8_t clockSelect,
      uint8_t clockDivider)
  {
      HWREG16(baseAddress + OFS_WDTCTL) =
          WDTPW + WDTCNTCL + WDTHOLD + clockSelect + clockDivider;
  }
  
  //*****************************************************************************
  //
  //! Sets the clock source for the Watchdog Timer in timer interval mode.
  //!
  //! \param baseAddress is the base address of the WDT_A module.
  //! \param clockSelect is the clock source that the watchdog timer will use.
  //!        Valid values are
  //!        \b WDT_A_CLOCKSOURCE_SMCLK [Default]
  //!        \b WDT_A_CLOCKSOURCE_ACLK
  //!        \b WDT_A_CLOCKSOURCE_VLOCLK
  //!        \b WDT_A_CLOCKSOURCE_XCLK
  //!        Modified bits are \b WDTSSEL of \b WDTCTL register.
  //! \param clockDivider is the divider of the clock source, in turn setting the
  //!       watchdog timer interval.
  //!        Valid values are
  //!        \b WDT_A_CLOCKDIVIDER_2G
  //!        \b WDT_A_CLOCKDIVIDER_128M
  //!        \b WDT_A_CLOCKDIVIDER_8192K
  //!        \b WDT_A_CLOCKDIVIDER_512K
  //!        \b WDT_A_CLOCKDIVIDER_32K [Default]
  //!        \b WDT_A_CLOCKDIVIDER_8192
  //!        \b WDT_A_CLOCKDIVIDER_512
  //!        \b WDT_A_CLOCKDIVIDER_64
  //!        Modifed bits are \b WDTIS and \b WDTHOLD of \b WDTCTL register.
  //!
  //! This function sets the watchdog timer as timer interval mode, which will
  //! assert an interrupt without causing a PUC.
  //!
  //! \return None
  //
  //*****************************************************************************
  void WDT_A_intervalTimerInit (uint32_t baseAddress,
      uint8_t clockSelect,
      uint8_t clockDivider)
  {
      HWREG16(baseAddress + OFS_WDTCTL) =
          WDTPW + WDTCNTCL + WDTHOLD + WDTTMSEL + clockSelect + clockDivider;
  }
  
  //*****************************************************************************
  //
  //Close the Doxygen group.
  //! @}
  //
  //*****************************************************************************
  
  