STC12C5616AD--10位AD转换串口显示

/*------------------------------------------------------------------*/ /* --- STC MCU Limited ---------------------------------------------*/ /* --- STC12C56xx Series MCU A/D Conversion Demo -------------------*/ /* --- 外部晶振：11.0592MHz /* --- 9600 -----------------------------------------*/ /* If you want to use the program or the program referenced in the */ /* article, please specify in which data and procedures from STC */ /*------------------------------------------------------------------*/ #include "reg51.h" #include "STC_Y3_UART.h" typedef unsigned char uchar; typedef unsigned int uint; /*Declare SFR associated with the ADC */ sfr AUXR = 0x8e; 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 sbit P32 = P3^2; void InitUart(); void SendData(uchar dat); void Delay(uint n); void InitADC(); uchar ch = 0; //ADC channel NO. bit ADC_over_flag; uchar data0,data1,data2,data3; uchar Vdat0,Vdat1,Vdat2,Vdat3; uint Vout,AD10_store,ADTEMP,i; unsigned long zdata; void main(void) { InitUART(); InitADC(); //Init ADC sfr AUXR |= 0x10; //set EADCI IE = 0xa0; //Enable ADC interrupt and Open master interrupt switch ADC_DATA = 0; //Start A/D conversion AD10_store = 0; while(1) { if(P32==0) { PrintString(" STC_Y3_UART SENGD TEST \r\n"); } if(ADC_over_flag) { ADC_over_flag = 0; PrintString("ADC"); //SendByte(HEX2ASCII(ch>>4)); SendByte(HEX2ASCII(ch)); //Show Channel NO. AD10_store =(AD10_store|ADC_DATA)&0x00ff; AD10_store = (AD10_store<<2)|(ADC_LOW2&0X03); ADTEMP = AD10_store; data3 = AD10_store/1000; i = AD10_store%1000; data2 = i/100; i = i%100; data1 = i/10; data0 = i%10; SendByte(' '); SendByte(HEX2ASCII(data3)); //Get ADC high 8-bit result and Send to UART SendByte(HEX2ASCII(data2)); //Get ADC high 8-bit result and Send to UART SendByte(HEX2ASCII(data1)); SendByte(HEX2ASCII(data0)); SendByte(' '); zdata = (unsigned long)ADTEMP*5000; Vout = (uint)(zdata/1023); Vdat3 = (uchar)(Vout/1000); i = Vout%1000; Vdat2 = (uchar)(i/100); Vdat1 = (uchar)(i%100/10); Vdat0 = (uchar)(i%100%10); SendByte(HEX2ASCII(Vdat3)); SendByte('.'); SendByte(HEX2ASCII(Vdat2)); //Get ADC high 8-bit result and Send to UART SendByte(HEX2ASCII(Vdat1)); SendByte(HEX2ASCII(Vdat0)); SendByte('V'); SendByte(' '); //if you want show 10-bit result, uncomment next line // SendData(ADC_LOW2); //Show ADC low 2-bit result Delay(50); AD10_store = 0; if (++ch > 7) { ch = 0; //switch to next channel SendByte(0x0d); //发回车 SendByte(0x0a); //发回车 } ADC_CONTR = ADC_POWER | ADC_SPEEDLL | ADC_START | ch; } } } /*---------------------------- ADC interrupt service routine ----------------------------*/ void adc_isr() interrupt 5 using 1 { ADC_CONTR &= !ADC_FLAG; //Clear ADC interrupt flag // SendByte(ch); //Show Channel NO. // SendByte(ADC_DATA); //Get ADC high 8-bit result and Send to UART ADC_over_flag = 1; //if you want show 10-bit result, uncomment next line // SendData(ADC_LOW2); //Show ADC low 2-bit result //if (++ch > 7) ch = 0; //switch to next channel //ADC_CONTR = ADC_POWER | ADC_SPEEDLL | ADC_START | ch; } /*---------------------------- 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 | ADC_START | ch; Delay(2); //ADC power-on delay and Start A/D conversion } /*---------------------------- Software delay function ----------------------------*/ void Delay(uint n) { uint x; while (n--) { x = 5000; while (x--); } }