第七届蓝桥杯初赛参赛源码+项目说明.zip

#include <STC15F2K60S2.H> #include "onewire.h" typedef unsigned char uchar; typedef unsigned int uint; sbit level = P3^4; sbit S7 = P3^0; sbit S6 = P3^1; sbit S5 = P3^2; sbit S4 = P3^3; sbit L1 = P0^0; sbit L2 = P0^1; sbit L3 = P0^2; uchar code dpnum[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf,0xff,0xc6}; uchar Fan_working_mode=1; uchar Fan_pwm; uchar count_t1=0; uchar count_t2=0; uchar Interface=0; uchar Fan_time_set=0; uchar Runtime=60; bit S7_state=0; uint temperature; void System_Init(); void Fan_mode(); void Timer0_Init(); void delayms(uchar ms); void key(); void display_bit(uchar pos,uchar dat); void Face(); void Timer1_Init(); uint DS18B20_Read(); void LED_working(); void main() { System_Init(); Timer0_Init(); Timer1_Init(); while(1) { key(); Fan_mode(); Face(); LED_working(); } } void System_Init() { P2 = (P2 & 0x1f) | 0x80; P0 = 0xff; P2 = (P2 & 0x1f) | 0xa0; P0 = 0x00; P2 = (P2 & 0x1f) | 0xc0; P0 = 0xff; P2 = (P2 & 0x1f) | 0xe0; P0 = 0xff; } void Fan_mode() { switch(Fan_working_mode) { case 1: Fan_pwm=20; break; case 2: Fan_pwm=30; break; case 3: Fan_pwm=70; break; } } void Timer0_Init() { TMOD |= 0X00; //16位自动重装模式 TH0 = (65536-10)/256; TL0 = (65536-10)%256; TR0 = 1; ET0 = 1; EA = 1; } void Timer0() interrupt 1 { count_t1++; if(count_t1 < Fan_pwm) level = 1; else if(count_t1 < 100) level = 0; else if(count_t1 == 100) { level = 1; count_t1=0; } } void delayms(uchar ms) { uint i,j; for(i=ms;i>0;i--) for(j=810;j>0;j--); } void key() { if(S4 == 0) { delayms(5); if(S4 == 0) { Fan_working_mode++; if(Fan_working_mode>3) Fan_working_mode=1; while(S4==0); } } else if(S5==0) { delayms(5); if(S5 == 0) { TR0 = 1; TR1 = 1; Fan_time_set+=60; if(Fan_time_set>120) Fan_time_set=0; Runtime = Fan_time_set; while(S5==0); } } else if(S6==0) { delayms(5); if(S6 == 0) { Runtime = 0; } } else if(S7==0) { delayms(5); if(S7 == 0) { if(S7_state==0) { Interface=1; S7_state=1; } else { Interface=0; S7_state=0; } } while(S7==0); } } void display_bit(uchar pos,uchar dat) { P2 = (P2 & 0x1f) | 0xc0; P0 = 0x01 << pos; P2 = (P2 & 0x1f) | 0xe0; P0 = dat; } void Face() { switch(Interface) { case 0: //工作模式和运行时间显示界面 if(Runtime==0) { TR0 = 0; TR1 = 0; level=0;//当计时结束时，停止pwm信号输出 } display_bit(0,dpnum[10]); delayms(1); display_bit(1,dpnum[Fan_working_mode]); delayms(1); display_bit(2,dpnum[10]); delayms(1); display_bit(3,dpnum[11]); delayms(1); display_bit(4,dpnum[0]); delayms(1); display_bit(5,dpnum[Runtime/100]); delayms(1); display_bit(6,dpnum[Runtime/10%10]); delayms(1); display_bit(7,dpnum[Runtime%10]); delayms(1); P2 = (P2 & 0x1f) | 0xc0; P0 = 0xff; P2 = (P2 & 0x1f) | 0xe0; P0 = 0xff; break; case 1: //温度显示界面 temperature=DS18B20_Read(); //如果倒计时没有结束，温度显示界面会一直闪烁，倒计时结束停止闪烁，把这句话放到main函数里面在界面1,2都会闪烁，猜测为定时器打开和温度读取同时进行的问题 if(Fan_time_set>120) Fan_time_set=0; //Runtime = Fan_time_set; //如果加上此句在温度显示界面倒计时一直重新赋值 if(Runtime==0) { TR0 = 0; TR1 = 0; level=0;//当计时结束时，停止pwm信号输出 } display_bit(0,dpnum[10]); delayms(1); display_bit(1,dpnum[4]); delayms(1); display_bit(2,dpnum[10]); delayms(1); display_bit(3,dpnum[11]); delayms(1); display_bit(4,dpnum[11]); delayms(1); display_bit(5,dpnum[temperature/10]); delayms(1); display_bit(6,dpnum[temperature%10]);//温度检测的时候除数为10 delayms(1); display_bit(7,dpnum[12]); delayms(1); P2 = (P2 & 0x1f) | 0xc0; P0 = 0xff; P2 = (P2 & 0x1f) | 0xe0; P0 = 0xff; break; } } void Timer1_Init() { TMOD |= 0X00; TH1 = (65536-10000)/256; TL1 = (65536-10000)%256; TR1 = 1; ET1 = 1; EA = 1; } void Timer1() interrupt 3 { count_t2++; if(count_t2 == 100) { Runtime--; count_t2=0; } } uint DS18B20_Read() { uchar LSB,MSB; uint temp; init_ds18b20(); Write_DS18B20(0xcc);//跳过ROM指令 Write_DS18B20(0x44);//开始温度转换 delayms(1); init_ds18b20(); Write_DS18B20(0xcc);//跳过ROM指令 Write_DS18B20(0xbe);//读取高速暂存器 LSB = Read_DS18B20(); MSB = Read_DS18B20(); init_ds18b20(); temp = (MSB << 8) | LSB; temp >>= 4; return temp; } void LED_working() { switch(Fan_working_mode) { case 1: P2 = (P2 & 0x1f) | 0x80; P0 = 0xff; L1 = 0; break; case 2: P2 = (P2 & 0x1f) | 0x80; P0 = 0xff; L2 = 0; break; case 3: P2 = (P2 & 0x1f) | 0x80; P0 = 0xff; L3 = 0; break; } if(Runtime==0) { P2 = (P2 & 0x1f) | 0x80; P0 = 0xff; delayms(1); } }