合泰单片机智能充电器AD转换程序HT46R47_ADC
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#include "HT46R47-H.h"
extern void DelayNms(unsigned int ms);
unsigned int ADCStart(unsigned char chanl)
{
unsigned int k;
unsigned int adcbufL = 0;
unsigned int adcbufH = 0;
unsigned int adcdata = 0;
_eadi = 0; //disable interrupt
_adcr = 0x20|(0x07&chanl); //an0-an3 chanl=0x00,0x01,0x02,0x03 _acsr = 0x02; // fsys=4M 32分频Tad= 8us
_start = 0;
_start = 1;
_start = 0;
while(_eocb==1);
adcbufL = _adrl;
adcbufH = _adrh;
adcbufL = 0; //first time get out
adcbufH = 0;
DelayNms(1);
for(k=0;k<5;k++) //sample five times
{
_start = 0;
_start = 1;
_start = 0;
while(_eocb==1);
adcbufL = (unsigned int)(_adrl&0x01);
adcbufH = (unsigned int)_adrh;
adcdata += (unsigned int)((adcbufH<<1)+adcbufL);
DelayNms(1);
}
adcdata = adcdata/5;
_adcr = 0x00;
_acsr = 0x00;
return(adcdata);
}