dfg.zip_STC12C5608AD

#include "reg51.h" #include "intrins.h" typedef unsigned char BYTE; typedef unsigned int WORD; /*Declare SFR associated with the ADC */ sfr ADC_CONTR = 0xC5; //ADC control register sfr ADC_DATA = 0xC6; //ADC high 8-bit result register sfr ADC_LOW2 = 0xBE; //ADC low 2-bit result register sfr P1M0 = 0x91; //P1 mode control register0 sfr P1M1 = 0x92; //P1 mode control register1 /*Define ADC operation const for ADC_CONTR*/ #define ADC_POWER 0x80 //ADC power control bit #define ADC_FLAG 0x10 //ADC complete flag #define ADC_START 0x08 //ADC start control bit #define ADC_SPEEDLL 0x00 //420 clocks #define ADC_SPEEDL 0x20 //280 clocks #define ADC_SPEEDH 0x40 //140 clocks #define ADC_SPEEDHH 0x60 //70 clocks void InitADC(); void SendData(BYTE dat); BYTE GetADCResult(BYTE ch); void Delay(WORD n); void main() { InitADC(); //Init ADC sfr while (1) { GetADCResult(0); //Show Channel0 } } /*---------------------------- Get ADC result ----------------------------*/ BYTE GetADCResult(BYTE ch) { ADC_CONTR = ADC_POWER | ADC_SPEEDLL | ch | ADC_START; _nop_(); //Must wait before inquiry _nop_(); _nop_(); _nop_(); while (!(ADC_CONTR & ADC_FLAG));//Wait complete flag ADC_CONTR &= ~ADC_FLAG; //Close ADC return ADC_DATA; //Return ADC result } /*---------------------------- Initial ADC sfr ----------------------------*/ void InitADC() { P1 = P1M0 = P1M1 = 0xff; //Set all P1 as Open-Drain mode ADC_DATA = 0; //Clear previous result ADC_CONTR = ADC_POWER | ADC_SPEEDLL; Delay(2); //ADC power-on and delay } /*---------------------------- Software delay function ----------------------------*/ void Delay(WORD n) { WORD x; while (n--) { x = 5000; while (x--); } }