SHY-678_MCU-course-design-2_31784_1749460226335.zip

/*ds18b20温度显示 **@CTBU^Shy^ **$version:v1.1 **#chinese_coding_standard:GB2312 */ #include "ds18b20.h" #include "nixie_tube.h" #include <reg52.h> //*********************************************************************** #define precision_level 1 //等级1 - 0.5分辨率 #define show_temperature 0 #define show_priod 1 #define show_upper_limit 2 //12.7 #define min_sampling_priod 100 #define max_sampling_priod 60000 //到60秒 #define max_temperature 120 sbit key_priod = P2^0; sbit key_inc = P2^1; sbit key_dec = P2^2; sbit key_ok = P2^3; sbit alarm = P3^4; //*********************************************************************** unsigned char run_state = show_temperature; float temperature_alarm_upper_limit = 17.5; unsigned char code seg_tab[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90, // seg//'0' '1' '2' '3' '4' '5' '6' '7' '8' '9' //code// 0 1 2 3 4 5 6 7 8 9 0x88,0x83,0xc6,0xa1,0xc1,0x89,0xff,0x9c,0x8c}; // seg//'a' 'b' 'c' 'd' 'U' 'H' ' ' '*' 'p' //code// a b c d e f 10 11 12 int temp = 0; int count = 0; unsigned char blink_position = 4; unsigned int sampling_priod = min_sampling_priod; //采样周期ms bit key_pressed = 0; unsigned char tc = 0; //*********************************************************************** void temp_display(int temperature); void upper_limit_display(float upper); void sampling_priod_display(unsigned int sampling_priod); void timer0_init(void); //10ms //*********************************************************************** void main(void) { EA = 1; ET0 =1; ds18b20_init(); //初始化DS18B20 ds18b20_precision_set(precision_level); //0.5 temp = ds18b20_read_temperature(); timer0_init(); P2 = 0xff; while(1) { switch(run_state) { case show_temperature: if(count > sampling_priod/20) { temp = ds18b20_read_temperature(); count = 0; if(temp>temperature_alarm_upper_limit*10) alarm=0; else alarm=1; } /*功能键检测*/ if(key_pressed==0&&key_priod==0) { key_pressed = 1; tc = 10; } delay200us(); if(tc) { tc--; if(!tc) { if(key_priod==0) { run_state = show_priod; key_pressed = 0; } else key_pressed = 0; //判定抖动 } } break; case show_priod: sampling_priod_display(sampling_priod); /*功能键检测*/ if(key_pressed==0&&(key_priod==0||key_inc==0||key_dec==0||key_ok==0)) { key_pressed = 1; tc = 10; } delay200us(); if(tc) { tc--; if(!tc) { if(key_priod==0||key_inc==0||key_dec==0||key_ok==0) { if(key_priod==0) { run_state = show_upper_limit; key_pressed = 0; } else if(key_inc==0) { blink_position--; if(blink_position==0) blink_position=4; key_pressed=0; } else if(key_dec==0) { switch(blink_position) { case 1: sampling_priod+=10000; if(sampling_priod>max_sampling_priod) sampling_priod-=max_sampling_priod/10000*10000; break; case 2: sampling_priod+=1000; if(sampling_priod>max_sampling_priod) sampling_priod-=max_sampling_priod/1000%10*1000; if(sampling_priod/1000%10==0) //消除进位 sampling_priod-=10000; break; case 3: sampling_priod+=100; if(sampling_priod>max_sampling_priod) sampling_priod-=max_sampling_priod/100%10*100; if(sampling_priod/100%10==0) sampling_priod-=1000; break; case 4: sampling_priod+=20; if(sampling_priod>max_sampling_priod) sampling_priod-=max_sampling_priod/10%10*10; if(sampling_priod/10%10==0) sampling_priod-=100; break; default: break; } key_pressed=0; } else if(key_ok==0) { run_state=show_temperature; blink_position=4; key_pressed=0; } else { key_pressed = 0; //判定抖动 } } else key_pressed = 0; //判定抖动 } } break; case show_upper_limit: upper_limit_display(temperature_alarm_upper_limit); /*功能键检测*/ if(key_pressed==0&&(key_priod==0||key_inc==0||key_dec==0||key_ok==0)) { key_pressed = 1; tc = 10; } delay200us(); if(tc) { tc--; if(!tc) { if(key_priod==0||key_inc==0||key_dec==0||key_ok==0) { if(key_priod==0) { run_state = show_priod; key_pressed = 0; } else if(key_inc==0) { blink_position--; if(blink_position==0) blink_position=4; key_pressed=0; } else if(key_dec==0) { switch(blink_position) { case 1: temperature_alarm_upper_limit+=100; if(temperature_alarm_upper_limit>max_temperature) temperature_alarm_upper_limit-=max_temperature/100*100; break; case 2: temperature_alarm_upper_limit+=10; if(temperature_alarm_upper_limit>max_temperature) temperature_alarm_upper_limit-=((int)(max_temperature/10))%10*10; if(((int)(temperature_alarm_upper_limit/10))%10==0) //消除进位 temperature_alarm_upper_limit-=100; break; case 3: temperature_alarm_upper_limit+=1; if(temperature_alarm_upper_limit>max_temperature) temperature_alarm_upper_limit-=((int)(max_temperature))%10; if(((int)(temperature_alarm_upper_limit))%10==0) temperature_alarm_upper_limit-=10; break; case 4: temperature_alarm_upper_limit+=0.5; if(temperature_alarm_upper_limit>max_temperature) temperature_alarm_upper_limit-=1; if(temperature_alarm_upper_limit-(int)(temperature_alarm_upper_limit)==0) temperature_alarm_upper_limit-=1; break; default: break; } key_pressed=0; } else if(key_ok==0) { run_state=show_temperature; blink_position=4; key_pressed=0; } else { key_pressed = 0; //判定抖动 } } else key_pressed = 0; //判定抖动 } } break; } } } //*********************************************************************** void temp_display(int temperature) { unsigned char temp[] = {0x10,0,0,0,0x11,0x0c}; int i = 0; for(i = 4;temperature;i--)//11.30 { temp[i-1] = temperature%10; temperature/=10; } single_tube_display(0,seg_tab[temp[0]]); single_tube_display(1,seg_tab[temp[1]]); single_tube_display(2,seg_tab[temp[2]]&0x7f); //与上小数点 single_tube_display(3,seg_tab[temp[3]]); single_tube_display(4,seg_tab[temp[4]]); single_tube_display(5,seg_tab[temp[5]]); } //*********************************************************************** void sampling_priod_display(unsigned int sampling_priod) { unsigned char priod[] = {0x12,0,0,0,0,0}; unsigned char i = 5; static unsigned int blink_time = 0; static bit blink_flag = 1; if(blink_flag) { if(++blink_time==30) blink_flag = 0; } else { if(--blink_time==0) blink_flag = 1; } while(i) { priod[i] = sampling_priod%10; sampling_priod/=10; i--; //11.26 } /*闪烁调整 所以每位必须点亮*/ // if(priod[1] == 0) priod[1] = 0x10; //空 // if(priod[2] == 0) priod[2] = 0x10; //空 single_tube_display(1,seg_tab[priod[0]]); switch(blink_position) { case 1: if(blink_flag) single_tube_display(2,seg_tab[priod[1]]); else single_tube_display(2,seg_tab[0x10]);//空 single_tube_display(3,seg_tab[priod[2]]); single_tube_d