#include "Uln2803Drive.h"		 


SUln2803Drive Uln2803;

volatile unsigned char idata	
    cPwmDriveBuffer[17];




unsigned char code cTableUnl2803DriveMask[]=
{
    0xfc, 0xf3,  0xcf,  0x3f,        
};
unsigned char code cTableUnl2803DrivePhase[] =    
{
  0x03, 0x01, 0x00, 0x02, 0x03, 
  0x0c, 0x08, 0x00, 0x04, 0x0c,  
  0x30, 0x10, 0x00, 0x20, 0x30,  
  0xc0, 0x40, 0x00, 0x80, 0xc0,  
};

unsigned int code wTableUnl2803DriveValue[] =
{
    0x0000, 0x0080, 0x0820, 0x1110, 0x2244, 0x2492, 0x4a52, 0x5554, 
	0xaaaa, 0xabaa, 0xbaae, 0xbbba, 0xeeee, 0xeefe, 0xf7f7, 0x7fff,


};


void Uln2803Drive(unsigned char cPort, unsigned char cPosition)
{
    unsigned long int
		wTemp;		
	unsigned char 
	    c,
	    cDriveValue,
		cPhaseValueLeft,
		cPhaseValueRight,
		cShieldValue; 

	cPosition       &= 0x3f;
	wTemp            = wTableUnl2803DriveValue[cPosition & 0x0f];	
	cPhaseValueLeft  = cTableUnl2803DrivePhase[(cPosition / 16) + (cPort * 5)];
	cPhaseValueRight = cTableUnl2803DrivePhase[(cPosition / 16) + (cPort * 5) + 1];		
	cShieldValue     = cTableUnl2803DriveMask[cPort];

	for (c = 0; c != 16; c ++)
	{		
		if (wTemp & 0x0001)
			cDriveValue = cPhaseValueRight;
		else
		    cDriveValue = cPhaseValueLeft;	 
		cPwmDriveBuffer[c] &=  cShieldValue;	   	
		cPwmDriveBuffer[c] |=  cDriveValue;
		wTemp >>= 1; 
	} 
	cPwmDriveBuffer[16] &=  cShieldValue;	   	
	cPwmDriveBuffer[16] |=  cPhaseValueRight;	
}