text: //*****************************************************************************
  //
  // comp.h - Prototypes for the analog comparator driver.
  //
  // Copyright (c) 2005-2013 Texas Instruments Incorporated.  All rights reserved.
  // Software License Agreement
  // 
  //   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.
  // 
  // This is part of revision 10007 of the Stellaris Peripheral Driver Library.
  //
  //*****************************************************************************
  
  #ifndef __COMP_H__
  #define __COMP_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 ComparatorConfigure() as the ulConfig
  // parameter.  For each group (i.e. COMP_TRIG_xxx, COMP_INT_xxx, etc.), one of
  // the values may be selected and combined together with values from the other
  // groups via a logical OR.
  //
  //*****************************************************************************
  #define COMP_TRIG_NONE          0x00000000  // No ADC trigger
  #define COMP_TRIG_HIGH          0x00000880  // Trigger when high
  #define COMP_TRIG_LOW           0x00000800  // Trigger when low
  #define COMP_TRIG_FALL          0x00000820  // Trigger on falling edge
  #define COMP_TRIG_RISE          0x00000840  // Trigger on rising edge
  #define COMP_TRIG_BOTH          0x00000860  // Trigger on both edges
  #define COMP_INT_HIGH           0x00000010  // Interrupt when high
  #define COMP_INT_LOW            0x00000000  // Interrupt when low
  #define COMP_INT_FALL           0x00000004  // Interrupt on falling edge
  #define COMP_INT_RISE           0x00000008  // Interrupt on rising edge
  #define COMP_INT_BOTH           0x0000000C  // Interrupt on both edges
  #define COMP_ASRCP_PIN          0x00000000  // Dedicated Comp+ pin
  #define COMP_ASRCP_PIN0         0x00000200  // Comp0+ pin
  #define COMP_ASRCP_REF          0x00000400  // Internal voltage reference
  #ifndef DEPRECATED
  #define COMP_OUTPUT_NONE        0x00000000  // No comparator output
  #endif
  #define COMP_OUTPUT_NORMAL      0x00000000  // Comparator output normal
  #define COMP_OUTPUT_INVERT      0x00000002  // Comparator output inverted
  
  //*****************************************************************************
  //
  // Values that can be passed to ComparatorSetRef() as the ulRef parameter.
  //
  //*****************************************************************************
  #define COMP_REF_OFF            0x00000000  // Turn off the internal reference
  #define COMP_REF_0V             0x00000300  // Internal reference of 0V
  #define COMP_REF_0_1375V        0x00000301  // Internal reference of 0.1375V
  #define COMP_REF_0_275V         0x00000302  // Internal reference of 0.275V
  #define COMP_REF_0_4125V        0x00000303  // Internal reference of 0.4125V
  #define COMP_REF_0_55V          0x00000304  // Internal reference of 0.55V
  #define COMP_REF_0_6875V        0x00000305  // Internal reference of 0.6875V
  #define COMP_REF_0_825V         0x00000306  // Internal reference of 0.825V
  #define COMP_REF_0_928125V      0x00000201  // Internal reference of 0.928125V
  #define COMP_REF_0_9625V        0x00000307  // Internal reference of 0.9625V
  #define COMP_REF_1_03125V       0x00000202  // Internal reference of 1.03125V
  #define COMP_REF_1_134375V      0x00000203  // Internal reference of 1.134375V
  #define COMP_REF_1_1V           0x00000308  // Internal reference of 1.1V
  #define COMP_REF_1_2375V        0x00000309  // Internal reference of 1.2375V
  #define COMP_REF_1_340625V      0x00000205  // Internal reference of 1.340625V
  #define COMP_REF_1_375V         0x0000030A  // Internal reference of 1.375V
  #define COMP_REF_1_44375V       0x00000206  // Internal reference of 1.44375V
  #define COMP_REF_1_5125V        0x0000030B  // Internal reference of 1.5125V
  #define COMP_REF_1_546875V      0x00000207  // Internal reference of 1.546875V
  #define COMP_REF_1_65V          0x0000030C  // Internal reference of 1.65V
  #define COMP_REF_1_753125V      0x00000209  // Internal reference of 1.753125V
  #define COMP_REF_1_7875V        0x0000030D  // Internal reference of 1.7875V
  #define COMP_REF_1_85625V       0x0000020A  // Internal reference of 1.85625V
  #define COMP_REF_1_925V         0x0000030E  // Internal reference of 1.925V
  #define COMP_REF_1_959375V      0x0000020B  // Internal reference of 1.959375V
  #define COMP_REF_2_0625V        0x0000030F  // Internal reference of 2.0625V
  #define COMP_REF_2_165625V      0x0000020D  // Internal reference of 2.165625V
  #define COMP_REF_2_26875V       0x0000020E  // Internal reference of 2.26875V
  #define COMP_REF_2_371875V      0x0000020F  // Internal reference of 2.371875V
  
  //*****************************************************************************
  //
  // Prototypes for the APIs.
  //
  //*****************************************************************************
  extern void ComparatorConfigure(unsigned long ulBase, unsigned long ulComp,
                                  unsigned long ulConfig);
  extern void ComparatorRefSet(unsigned long ulBase, unsigned long ulRef);
  extern tBoolean ComparatorValueGet(unsigned long ulBase, unsigned long ulComp);
  extern void ComparatorIntRegister(unsigned long ulBase, unsigned long ulComp,
                                    void (*pfnHandler)(void));
  extern void ComparatorIntUnregister(unsigned long ulBase,
                                      unsigned long ulComp);
  extern void ComparatorIntEnable(unsigned long ulBase, unsigned long ulComp);
  extern void ComparatorIntDisable(unsigned long ulBase, unsigned long ulComp);
  extern tBoolean ComparatorIntStatus(unsigned long ulBase, unsigned long ulComp,
                                      tBoolean bMasked);
  extern void ComparatorIntClear(unsigned long ulBase, unsigned long ulComp);
  
  //*****************************************************************************
  //
  // Mark the end of the C bindings section for C++ compilers.
  //
  //*****************************************************************************
  #ifdef __cplusplus
  }
  #endif
  
  #endif // __COMP_H__
  