#include
//stdio.h, string.h are used for printf function prototype
#include
#include
sbit AD_CS = P1^2;
sbit AD_WR = P1^0;
sbit AD_RD = P1^1;
sbit AD_PORT = P0;
/**************************************
*
* Enable ADC
*
***************************************/
void AdcStart(void)
{
AD_CS = 0;
_nop_();
AD_WR = 0;
_nop_();
AD_WR = 1;
_nop_();
AD_CS = 1;
_nop_();
}
/**************************************
*
* Read ADC value
*
***************************************/
int AdcRead(void)
{
int temp;
AD_PORT = 0xFF; // Write high to PORT port before MCU reads AD value
AD_CS = 0;
_nop_();
AD_RD = 0;
_nop_();
_nop_();
_nop_();
temp = P0;
_nop_();
AD_RD = 1;
_nop_();
AD_CS = 1;
_nop_();
return temp;
}
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