STC12C5A60S2_ADC_CODE.rar_stc12c5a60s2_stc12c5a60s2 adc

#include <STC12C5A60S2.h> #include <intrins.h> #define HI 1 #define LO 0 #define true 1 #define false 0 typedef unsigned char BYTE; typedef unsigned int WORD; #define FOSC 18432000L #define BAUD 9600 /*Declare SFR associated with the ADC */ sfr ADC_LOW2 = 0xBE; //ADC low 2-bit result register /*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 #define ADC1 0 #define ADC2 1 #define ADC3 2 #define ADC4 3 #define ADC5 4 #define ADC6 5 #define ADC7 6 #define ADC8 7 unsigned int mSec; unsigned char SEC,MIN,cx=0; unsigned int Data =0; unsigned int ADC_Val = 0; unsigned int LC=0; /*---------------------------- Software delay function ----------------------------*/ void delay_ms(unsigned int DxVal) //@18.432MHz { unsigned char i, j; while(DxVal) { _nop_(); _nop_(); i = 18; j = 234; do { while (--j); } while (--i); DxVal--; } } /*---------------------------- Send one byte data to PC Input: dat (UART data) Output:- ----------------------------*/ void SendData( BYTE dat) { ES = LO; SBUF = dat; //Send current data while (!TI); //Wait for the previous data is sent TI = 0; //Clear TI flag ES = HI; } void PROMT(void) { SendData('\r'); SendData('\n'); SendData('>'); SendData('>'); } void Timer0Init(void) //100us@18.432MHz { AUXR &= 0x7F; //Timer clock is 12T mode TMOD &= 0xF0; //Set timer work mode TMOD |= 0x22; //Set timer work mode TL0 = 0x66; //Initial timer value TH0 = 0x66; //Set reload value TF0 = 0; //Clear TF0 flag TR0 = 1; //Timer0 start run } void IntInit(void) //function Interrupt { EX0=HI; IT0 = HI; ET0=LO; EX1=HI; IT1 =LO; ET1=LO; ES=HI; EA=HI; } /*---------------------------- Initial ADC sfr ----------------------------*/ void InitADC() { P1ASF = 0xFF; //Set all P1 as analog input port AUXR1 = 0x74; ADC_RES = 0; //Clear previous result ADC_CONTR = ADC_POWER | ADC_SPEEDLL | ADC_START | 0; delay_ms(2); //ADC power-on delay and Start A/D conversion } /*--------------------------- Get ADC result ----------------------------*/ WORD adc_read(BYTE ch) { unsigned int ADC_ValBuff; 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 ADC_ValBuff = ADC_RES; ADC_ValBuff = ADC_ValBuff << 8; ADC_ValBuff = ADC_ValBuff | ADC_RESL; return(ADC_ValBuff); //Return ADC result } /*---------------------------- Initial UART ----------------------------*/ void InitUart() { SCON = 0x5A; //8 bit data ,no parity bit //TMOD = 0x20; //T1 as 8-bit auto reload TH1 = TL1 = -(FOSC/12/32/BAUD); //Set Uart baudrate TR1 = 1; //T1 start running } unsigned char RxChar; void UART_IntService(void) interrupt 4 { if(TI) { TI = LO; return; } RxChar = SBUF; RI = 0; SendData(RxChar); } void Sent_ADC (unsigned int n,WORD ADC_Valx) { unsigned int N1; unsigned char N2; SendData(n); N2 = ADC_Valx/1000; SendData(N2 +'0'); N1 = ADC_Valx % 1000; SendData((N1/100)+'0'); N2 = N1%100; SendData((N2/10)+'0'); SendData((N2%10)+'0'); PROMT(); } void main (void) { Timer0Init(); InitUart(); IntInit(); InitADC(); while(1) { ADC_Val = adc_read(ADC1); Sent_ADC('A',ADC_Val); delay_ms(500); } }