///////////////////////////////////////////////////////////////////////////
////   Library for a 74595 Expanded Output Chip                        ////
////                                                                   ////
////   Any number of these chips may be connected in serise to get     ////
////   8 additional outputs per chip.  The cost is 3 I/O pins for      ////
////   any number of chips.                                            ////
////                                                                   ////
////   write_expanded_outputs(eo);  Writes the array eo to the chips   ////
////                                                                   ////
///////////////////////////////////////////////////////////////////////////
////        (C) Copyright 1996,2003 Custom Computer Services           ////
//// This source code may only be used by licensed users of the CCS C  ////
//// compiler.  This source code may only be distributed to other      ////
//// licensed users of the CCS C compiler.  No other use, reproduction ////
//// or distribution is permitted without written permission.          ////
//// Derivative programs created using this software in object code    ////
//// form are not restricted in any way.                               ////
///////////////////////////////////////////////////////////////////////////

#ifndef EXP_OUT_ENABLE1

#define EXP_OUT_ENABLE1  PIN_E2
#define EXP_OUT_CLOCK1   PIN_E1
#define EXP_OUT_DO1      PIN_E0
#define NUMBER_OF_74595x 1

#endif


void write_expanded_outputs1(BYTE* eox)
{
  BYTE ix;

  output_low(EXP_OUT_CLOCK1);
  output_low(EXP_OUT_ENABLE1);

  for(ix=1;ix<=NUMBER_OF_74595x*8;++ix)
  {
	  // Clock out bits from the eo array
    if((*(eox+(NUMBER_OF_74595x-1))&0x80)==0)
      output_low(EXP_OUT_DO1);
    else
      output_high(EXP_OUT_DO1);
   
	shift_left(eox,NUMBER_OF_74595x,0);
   	output_high(EXP_OUT_CLOCK1);
   	output_low(EXP_OUT_CLOCK1);
  }
  output_high(EXP_OUT_ENABLE1);
  output_low(EXP_OUT_ENABLE1);

}