test_yh.rar_3V6H_DS18B20温度显示_Q2L

/*********************************************************** 设计：余浩 班级：15电科1班 时间：2018年5月16日 ***********************************************************/ #include <reg52.h> #include <ds18b20.h> #include <ds1302.h> #define uchar unsigned char #define uint unsigned int unsigned char NUM[11] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff}; void SEG(char num,char WE) { P2 = P2 & 0xf0; if(num >10 ) num = num %10; P0 = NUM[num]; switch(WE) { case 1: P2 = P2 | 0x01;break; case 2: P2 = P2 | 0x02;break; case 3: P0 = P0 & 0x7f;P2 = P2 | 0x04;break; case 4: P2 = P2 | 0x08;break; default:break; } } void Prin_num(int num) { uint qian=0,shi=0,bai=0,ge=0; uint kai=1; if(num>=0) { qian = num/1000; if(qian != 0 ) kai =0; SEG(qian+kai*10,1); delay(10); bai = num%1000/100; if(bai != 0 ) kai =0; SEG(bai+kai*10,2); delay(10); shi = num%100/10; SEG(shi,3); delay(10); ge = num%10; SEG(ge,4); delay(10); } else { num = -num; P2 = P2 & 0xf0; P0 = 0xbf; P2 = P2 | 0x01; delay(10); bai = num%1000/100; if(bai != 0 ) kai =0; SEG(bai+kai*10,2); delay(10); shi = num%100/10; SEG(shi,3); delay(10); ge = num%10; SEG(ge,4); delay(10); } } void main() { int a=100; uint b=0; write_ds1302(0x84,0x12); //??? write_ds1302(0x82,0x00); write_ds1302(0x80,0x00); //????(81h?80h)??7 ?????0?,??????? P0 = 0xfe; P2 = 0x00; while(1) { //SEG(a++,4); // delay(500); // set_rtc(); read_rtc(); // tmpchange(); //if(tmp()>10000) // Prin_num(-(40960-tmp())%1000); //else // Prin_num(tmp()%1000); a--; Prin_num((min/16)*1000+(min%16)*100+(sec/16)*10+sec%16); } }