adc.c

利用微處理器LPC2132去驅動LCD 128*64

#include "lpc21xx.h"
int adc(int channel)//ad convert result enarge 10 times
{
 int temp;

         
ADCR=0x1<<channel;
ADCR|=0x1200200;//ミㄨ锣传


while(((temp=ADDR)&0x80000000)==0);
//temp=ADDR;
temp>>=6;
temp&=0x3ff;//TEMP IS 0-3V PRESICION IS 1024


return (temp*33)/1024;

}