paldos.hpp

一个嵌入式系统的C代码

//*************************************************************************
//  MODULE : Pal - Program Abstraction Layer for the RCOS system	  *
//  AUTHOR : Ron Chernich                                                 *
//  PURPOSE: Definition of a class to provide platform dependant services *
//           for timer interrupts, raw keyboard buffer access and low     *
//           level mouse events.					  *
//  HISTORY:                                                              *
//   29-OCT-93  Created to make "Timer" more platform independant	  *
//*************************************************************************

#ifndef _RCOS_PAL

  #include <stdlib.h>
  #include "rcos.hpp"


  //////////////////////////////////////
  // Protos for low level keyboard and timer services
  //
  BOOL   PalKeyReady (void);	     // Return state of input keyboard buffer
  UINT16 PalGetKey (void);	     // get next value from keyboard buffer
  UINT32 PalGetVec (UINT16);	     // get (flat) vector to service routine
  void   PalSetVec (UINT16, UINT32); // replace vector of service interrupt
  UINT32 PalGetTime (void); 	     // get milliseconds since midnight
  void   PalInitClk (void);	     // Setup for 1mS clock resolution
  void   PalResetClk (void);	     // Restore original resolution


  ////////////////////
  // define constants for DOS based mouse functions..
  //
  #define MM_Driver     0x33		// Standard MS-DOS mouse interrupt
  #define MM_Reset	0x00		// Reset mouse driver
  #define MM_Show	0x01		// show mouse pointer
  #define MM_Hide	0x02		// Hide mouse cursor
  #define MM_SetH	0x07		// Set horizontal movement limits
  #define MM_SetV	0x08		// Set vertical movement limits
  #define MM_SetISR	0x0C		// Set user defined service routine
  #define MM_Smart	0x10		// Conditional cursor hide
  #define MM_MouseMove	0x01		// Mask for movement notification
  #define MM_LBdown	0x02		// Mask for left button pressed
  #define MM_LBup	0x04		// Mask for left button released

  /////////////
  // Protos for low level mouse services.. Notice the "Hide Pointer" routine
  // takes optional args.  If they default, just turn the begger off.  If
  // a rect region is given, use "smart" blanking; ie pointer turns off
  // only if it is in, or moves into the specified region.
  //
  BOOL PalMouseInit (void);	        // Prepare mouse for use (if installed)
  void PalMouseReset (void);	        // restore anything done by Init
  BOOL PalMouseEvent (INT16*, INT16*);  // get location of last click (if any)
  void PalMousePointerOn (void);        // display pointer
  void PalMousePointerOff (INT16 = -1, INT16 = -1, INT16 = -1, INT16 = -1);

  #define _RCOS_PAL
#endif

/********************************** eof **********************************/