shishi.zip_AD电压采集_c51 报警_c51 采集_tlc2543_tlc2543电压表

#include<reg52.h> #include<intrins.h> #define uchar unsigned char #define uint unsigned int sbit clock = P1^3; sbit d_in = P1^2; sbit d_out = P1^1; sbit _cs = P1^0; sbit wei1 = P1^4; //高位位选,低电平有效 sbit wei2 = P1^5; sbit wei3 = P1^6; sbit wei4 = P1^7; //低位位选 sbit ring = P3^2; //sbit sw1 = P3^2; //sbit sw2 = P3^3; //sbit sw3 = P3^4; uchar a1,b1,c1,d1; float sum; float sum_final1; uint shangxian; uchar duan[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; uchar duan_dot[] = {0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef}; //uchar wei[] = {0x08,0x04,0x02,0x01}; void delay1(unsigned char b) { unsigned char a; for(; b > 0; b--) for(a = 22; a > 0; a--); } //void display1(uchar a, uchar b, uchar c, uchar d) //{ // // // wei4 = 0; // P2 = duan[d];//|0x80; // wei4 = 1; // delay1(1); // //wei4 = 1; // // wei3 = 0; // //p2 = 0xff; // P2 = duan[c]; // wei3 = 1; // delay1(1); // //wei3 = 1; // // // //p2 = 0xff; // wei2 = 0; // //P2 = dan[b]|0x80; // P2 = duan[b]; // wei2 = 1; // delay1(1); // //wei2 = 1; // // wei1 = 0; // //p2 = 0xff; // P2 = duan_dot[a];///|0x80; // wei1 = 1; // delay1(1); // //wei1 = 1; //} void display1(uchar a, uchar b, uchar c, uchar d) { P2 = duan[d]; wei4 = 1; delay1(50); wei4 = 0; P2 = duan[c]; wei3 = 1; delay1(50); wei3 = 0; P2 = duan[b]; wei2 = 1; delay1(50); wei2 = 0; P2 = duan_dot[a]; wei1 = 1; delay1(50); wei1 = 0; } /*void display2(uchar c, uchar d) { P0 = 0x40; wei3 = 1; delay1(50); wei3 = 0; P0 = duan[c]; wei2 = 1; delay1(50); wei2 = 0; P0 = duan[d]; wei1 = 1; delay1(50); wei1 = 0; } */ /*void display3(uint gao) { uchar x, y; x = gao / 10; y = gao % 10; P0 = duan[x]; wei2 = 1; delay1(50); wei2 = 0; P0 = duan[y]; wei1 = 1; delay1(50); wei1 = 0; } */ uint read(uchar port) { uchar i, al = 0, ah = 0; unsigned long ad; clock = 0; _cs = 0; port <<= 4;//什么意思 for(i = 0; i < 4; i++) { d_in = port & 0x80; clock = 1; clock = 0; port <<= 1; } d_in = 0; for(i = 0; i < 8; i++) { clock = 1; clock = 0; } _cs = 1; delay1(5); _cs = 0; for(i = 0; i < 4; i++) { clock = 1; ah <<= 1; if(d_out) ah |= 0x01; clock = 0; } for(i = 0; i < 8; i++) { clock = 1; al <<= 1; if(d_out) al |= 0x01; clock = 0; } _cs = 1; ad = (uint)ah; ad <<= 8; ad |= al; return(ad); } /* void getkey() interrupt 0 { delay1(50); if(sw1 == 0) { while(sw1 == 0); wei3 = 0; wei4 = 0; while(1) { if(sw2 == 0) { delay1(50); if(sw2 == 0) { shangxian++; while(sw2 == 0); } } if(sw3 == 0) { delay1(50); if(sw3 == 0) { shangxian--; while(sw3 == 0); } } display3(shangxian); if(sw1 == 0) { delay1(50); if(sw1 == 0) { while(sw1 == 0); break; } } } } } */ void main() { /* wei1 = 0; wei2 = 0; wei3 = 0; wei4 = 0; ring = 0; while(1) { if(sw3 == 0) { delay1(50); if(sw3 == 0) { wei1 = ~wei1; while(sw3 == 0); } } }*/ ring = 0; wei1 = 1; wei2 = 1; wei3 = 1; wei4 = 1; P2 = 0x00; // double rp; // double temp; sum = 0; sum_final1 = 0; shangxian = 4; // TCON = 0x01; // IE = 0x81; while(1) { uint j; for(j = 0; j < 128; j++) { sum += read(0); display1(a1, b1, c1, d1); // if(sum_final1 < 0) // display2(c1, d1); } sum = sum / 128;//采样128次，求平均 sum_final1 = (sum / 4095) * 5; //转换成电压值 // sum_final1 /= 6.93; // rp = (5 + 2 * sum_final1) * 80 / (5 - 2 * sum_final1); // temp = (rp - 100) / 0.39 - 19; //减去焦耳热引起的温度偏差 if(sum_final1 > shangxian) ring = 1; else ring = 0; sum_final1 = sum_final1 * 100; a1 = (int)sum_final1 / 1000; b1 = (int)sum_final1 % 1000 / 100; c1 = (int)sum_final1 % 1000 % 100 /10; d1 = (int)sum_final1 % 10; display1(a1, b1, c1, d1); // sum = 0; // sum_final1 = 0; /* if(sum_final1 < 0) { c1 = (int)sum_final1 /10; d1 = (int)sum_final1 %10; display2(c1, d1); }*/ } //while(1) //{ //ring = 1; //_cs = 0; //} }