STC12C5410AD触摸屏代码4线制(电阻式)

#include "stc12c5410ad.h" #include "intrins.h" sfr ADC_RES = 0xC6; //ADC high 8-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 static code unsigned char Tab[4][4]={{'0','1','2','3'},{'4','5','6','7'},{'8','9','a','b'},{12,13,14,15}}; void Delay(unsigned int n) { unsigned int x; while (n--) { x = 5000; while (x--); } } void InitADC(void) { P1 = P1M0 = P1M1 = 0xff; //Set all P1 as Open-Drain mode ADC_RES = 0; //Clear previous result ADC_CONTR = ADC_POWER | ADC_SPEEDLL; Delay(2); //ADC power-on and delay } unsigned char GetADCResult(unsigned char 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_RES; //Return ADC result } static unsigned char ScanKey(void) { unsigned char x=0,y=0; P1M1 |= ((1<<7)|(1<<5)); P1M0 &=~ ((1<<7)|(1<<5)); P1 &=~ (1<<7);//X+为GND P1 |= (1<<5);//X-为VCC P1M0 |= ((1<<6)|(1<<4)); P1M1 &=~ ((1<<6)|(1<<4));//Y+为Hi-Z 且Y-作为AD口使用 // Delay(5); x = GetADCResult(6); P1M1 |= ((1<<4)|(1<<6)); P1M0 &=~ ((1<<4)|(1<<6)); P1 &=~ (1<<4);//Y+为GND P1 |= (1<<6);//Y-为VCC P1M0 |= ((1<<7)|(1<<5)); P1M1 &=~ ((1<<7)|(1<<5));//X+为Hi-Z 且X-作为AD口使用 // Delay(5); y = GetADCResult(5); return Tab[x/75][y/64];//返回键值 } /*---------------------------- Initial UART ----------------------------*/ void InitUart(void) { PCON &= 0x7f; //波特率不倍速 SCON = 0x50; //8位数据,可变波特率 AUXR |= 0x40; //定时器1时钟为Fosc,即1T AUXR &= 0xfe; //串口1选择定时器1为波特率发生器 TMOD &= 0x0f; //清除定时器1模式位 TMOD |= 0x20; //设定定时器1为8位自动重装方式 TL1 = 0xDC; //设定定时初值 TH1 = 0xDC; //设定定时器重装值 ET1 = 0; //禁止定时器1中断 TR1 = 1; //启动定时器1 ES = 1; EA = 1; } void SendData(unsigned char dat) { EA=0; SBUF = dat; //Send current data while (!TI); //Wait for the previous data is sent TI = 0; //Clear TI flag EA=1; } static void Sys_init(void) { P1M0 |= ((1<<2)|(1<<3)); P1M1 &=~ ((1<<2)|(1<<3)); InitUart(); InitADC(); } void main(void) { Sys_init(); while(1) { ScanKey(); } } void getch(void) interrupt 4 { unsigned char a; EA=0;//清除中断标志，硬件置位，软件清零 RI=0; a=SBUF; //接受串口缓冲区数据 if(a==0x80) { // ShowResult(6); //Show Channel6 // ShowResult(7); //Show Channel7 SendData(ScanKey()); } EA=1; }