text: //*****************************************************************************
  //
  //  adc.h
  //
  //  Defines and Macros for the ADC.
  //
  //  Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
  //
  //
  //  Redistribution and use in source and binary forms, with or without
  //  modification, are permitted provided that the following conditions
  //  are met:
  //
  //    Redistributions of source code must retain the above copyright
  //    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.
  //
  //    Neither the name of Texas Instruments Incorporated nor the names of
  //    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" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  //  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  //  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  //  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  //  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  //  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  //  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  //  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  //  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  //  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  //
  //*****************************************************************************
  
  #ifndef __ADC_H__
  #define __ADC_H__
  
  //*****************************************************************************
  //
  // If building with a C++ compiler, make all of the definitions in this header
  // have a C binding.
  //
  //*****************************************************************************
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  //*****************************************************************************
  // Values that can be passed to APIs as ulChannel parameter
  //*****************************************************************************
  #define ADC_CH_0   0x00000000
  #define ADC_CH_1   0x00000008
  #define ADC_CH_2   0x00000010
  #define ADC_CH_3   0x00000018
  
  
  //*****************************************************************************
  //
  // Values that can be passed to ADCIntEnable(), ADCIntDisable()
  // and ADCIntClear() as ulIntFlags, and returned from ADCIntStatus()
  //
  //*****************************************************************************
  #define ADC_DMA_DONE        0x00000010
  #define ADC_FIFO_OVERFLOW   0x00000008
  #define ADC_FIFO_UNDERFLOW  0x00000004
  #define ADC_FIFO_EMPTY      0x00000002
  #define ADC_FIFO_FULL       0x00000001
  
  
  //*****************************************************************************
  //
  // API Function prototypes
  //
  //*****************************************************************************
  extern void ADCEnable(unsigned long ulBase);
  extern void ADCDisable(unsigned long ulBase);
  extern void ADCChannelEnable(unsigned long ulBase,unsigned long ulChannel);
  extern void ADCChannelDisable(unsigned long ulBase,unsigned long ulChannel);
  extern void ADCIntRegister(unsigned long ulBase, unsigned long ulChannel,
                      void (*pfnHandler)(void));
  extern void ADCIntUnregister(unsigned long ulBase, unsigned long ulChannel);
  extern void ADCIntEnable(unsigned long ulBase, unsigned long ulChannel,
                    unsigned long ulIntFlags);
  extern void ADCIntDisable(unsigned long ulBase, unsigned long ulChannel,
                    unsigned long ulIntFlags);
  extern unsigned long ADCIntStatus(unsigned long ulBase,unsigned long ulChannel);
  extern void ADCIntClear(unsigned long ulBase, unsigned long ulChannel,
                    unsigned long ulIntFlags);
  extern void ADCDMAEnable(unsigned long ulBase, unsigned long ulChannel);
  extern void ADCDMADisable(unsigned long ulBase, unsigned long ulChannel);
  extern void ADCTimerConfig(unsigned long ulBase, unsigned long ulValue);
  extern void ADCTimerEnable(unsigned long ulBase);
  extern void ADCTimerDisable(unsigned long ulBase);
  extern void ADCTimerReset(unsigned long ulBase);
  extern unsigned long ADCTimerValueGet(unsigned long ulBase);
  extern unsigned char ADCFIFOLvlGet(unsigned long ulBase,
                                     unsigned long ulChannel);
  extern unsigned long ADCFIFORead(unsigned long ulBase,
                                     unsigned long ulChannel);
  
  //*****************************************************************************
  //
  // Mark the end of the C bindings section for C++ compilers.
  //
  //*****************************************************************************
  #ifdef __cplusplus
  }
  #endif
  
  #endif // __ADC_H__
  
  