第十一届蓝桥杯单片机省赛第二场，省一代码

#include "iic.h" #include "onewire.h" #include "time.h" #include "key.h" #include "dis.h" #include "main.h" #include "stdio.h" #include "stc15f2k60s2.h" //数码管显示缓存 unsigned char dis_buf[10]={" "}; //显示模式 //1:数据界面 //2:参数界面 unsigned char dis_mode = 1;//数码管显示模式 //设置模式 //1:设置上限 //2：设置下限 unsigned char set_mode = 1; //工作标志位定义 bit job1_flag;//数码管显示5ms bit job2_flag;//按键扫描50ms bit job3_flag;//数码管显示处理100ms bit job4_flag;//电压测量200ms bit job5_flag;//温度测量400ms float wendu = 0.0;//温度 unsigned char tmax = 30,tmin = 20;//温度上下限 unsigned char tmax_old = 30,tmin_old = 20;//上一次温度上下限 //函数声明 void job1();//数码管显示5ms void job2();//按键扫描50ms void job3();//数码管显示处理100ms void job4();//电压输出与LED指示灯函数 void job5();//温度测量400ms void all_set(unsigned char dat);//外设控制 void led_set(unsigned char dat);//LED控制 //主函数 void main() { dis_init(); Timer1Init(); dis_init(); led_set(0xff); all_set(0x00); while(1) { //判断工作标志位 if(job1_flag) { job1_flag = 0; job1(); } if(job2_flag) { job2_flag = 0; job2(); } if(job3_flag) { job3_flag = 0; job3(); } if(job4_flag) { job4_flag = 0; job4(); } if(job5_flag) { job5_flag = 0; job5(); } } } void job1()//数码管显示5ms { display(dis_buf); } void job2()//按键扫描50ms { key_scan(); if(s7_flag) { s7_flag = 0; if(dis_mode == 2) { if(set_mode == 1) { tmax-=1; } else if(set_mode == 2) { tmin-=1; } if(tmin == 255) { tmin = 0; } if(tmax == 255) { tmax = 0; } } } else if(s6_flag) { s6_flag = 0; if(dis_mode == 2) { if(set_mode == 1) { tmax+=1; } else if(set_mode == 2) { tmin+=1; } if(tmin>99) { tmin = 99; } if(tmax>99) { tmax = 99; } } } else if(s5_flag) { s5_flag = 0; if(set_mode == 1) { set_mode = 2; } else if(set_mode == 2) { set_mode = 1; } } else if(s4_flag) { s4_flag = 0; if(dis_mode == 1) { dis_mode = 2; set_mode = 2; tmax_old = tmax; tmin_old = tmin; } else if(dis_mode == 2) { dis_mode = 1; if(tmin>tmax) { tmax = tmax_old; tmin = tmin_old; } } } } void job3()//数码管显示处理100ms { switch(dis_mode) { case 1:sprintf(dis_buf,"C %2.0f",wendu);break; case 2:sprintf(dis_buf,"P %2bu %2bu",tmax,tmin);break; } } void job4()//电压输出200ms与LED指示灯函数 { if(wendu>tmax) { pcf_dac((unsigned char)(4.0/5.0*255)); led_set(~0x01); } else if((wendu<=tmax) && (wendu >= tmin)) { pcf_dac((unsigned char)(3.0/5.0*255)); led_set(~0x02); } else if(wendu < tmin) { pcf_dac((unsigned char)(2.0/5.0*255)); led_set(~0x04); } if(tmin>tmax) { led_set(~0x08); } } void job5()//温度测量400ms { wendu = rd_temperature()*0.0625; } void all_set(unsigned char dat) { P2 = ((P2&0x1f)|0xA0); P0 = dat; P2 = (P2&0x1f); } void led_set(unsigned char dat) { P2 = ((P2&0x1f)|0x80); P0 = dat; P2 = (P2&0x1f); }