温度计C语言程序.doc

/*/MCU头文件#include #include 延时：nop/数据结构定义#define U8unsigned char 8字节 无符号字符型 2 8 256#define U16unsigned int 16字节 整型 2 16 65535#define VU8volatile unsigned char 定义字符#define VU16volatile unsigned int/数码管段码/const unsigned char led_7=0x3f,0x06,0x5b,0x4f,/ 0x66,0x6d,0x7d,0x07,/ 0x7f,0x6f,0x77,0x7c,/ 0x39,0x5e,0x79,0x71,/ 0x00,0xff,0x40,0x80;/const unsigned char position=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;const unsigned char led_7_a=0xc0,0xf9,0xa4,0xb0, 0x99,0x92,0x82,0xf8,段 0x80,0x90,0x88,0x83, 0xc6,0xa1,0x86,0x8e, 0xff,0x00,0xbf,0x7f;/const unsigned char position_a=0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80;const unsigned char position_a=0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01;位/数码管段码/const unsigned char led_7_a=0xA0,0xBE,0x62,0x2A,/ 0x3C,0x29,0x21,0xBA,/ 0x20,0x28,0x30,0x25,/ 0xE1,0x26,0x61,0x71,/ 0xff,0x00,0x7F,0xDF;/const unsigned char position_a=0x40,0x20,0x10,0x80,0x08,0x04,0x02,0x01;/IO口定义#define SEGP0 段接P0口#define DIGP2 位接P2口#define KEYP3 按键sbit DQ = P10; 位寻址 DS18b20 数据输入/出端sbit BEEP = P11; 蜂鸣器/按键功能定义#define SET0xfe#define UP0xfd 四键#define DOWN0xfb#define BACK0xf7#define WATCH0xef#define SVE 0xdf#define DATA0xbf#define CHANG0x7f/设置位标志定义#define TEMP_L_01 八位数码管低位第一位#define TEMP_L_12#define TEMP_L_23#define TEMP_L_34#define TEMP_H_05#define TEMP_H_16#define TEMP_H_27#define TEMP_H_38/缓冲区VU8move = 0;VU8buffer8=0,0,0,0,0,0,0,0; 初值VU8 count_1 = 0, count_2 = 0; /秒计数器VU8 count_dis = 0;/显示计数器VU8 count_flash = 0;/闪烁计数器VU8 flag_1s = 0;/1s标志VU8 flash_set = 0;/闪烁标志VU8 count_key = 0;/按键消抖计数器VU8flag_key = 0;/按键按下标志VU8 key_backup = 0;/按键状态保存寄存器（储存上时刻状态）VU8 key_value = 0;/按键值VU8 set = 0;/设置状态寄存器VU16 Temper = 0;/温度寄存器volatile char Temp_h4=0,8,2,16;/温度上限寄存器volatile char Temp_l4=0,6,2,16;/温度下线寄存器/11us延时函数void delay(U16 t) 内部经过定义 11us 汇编周期为11usfor(; t0; t-); /汇编指令结果所需时间/DS18B20复位函数void ow_reset(void) 先复后写再读char presence = 1; /判断是否循环复位，0跳出复位while(presence)while(presence)DQ = 1;_nop_(); /空指令，代表延时1us/_nop_();DQ = 0;/从高拉倒低delay(50);/550usDQ = 1;delay(6);/66uspresence = DQ;/presence = 0 复位成功,继续下一步delay(45);/500uspresence = DQ;DQ = 1;/拉高电平/DS18B20写命令函数void write_byte(U8 val)U8 i;for(i=8; i0; i-) /串行移八次DQ = 1;_nop_();_nop_();DQ = 0;/从高拉倒低_nop_();/5 us_nop_();_nop_();_nop_();_nop_();if(val&0x01)/最低位移出DQ = 1;elseDQ = 0;delay(6);/66 usval = 1;/右移1位DQ = 1;delay(1);/DS18B20读1字节函数U8 read_byte(void)U8 i;U8 value = 0;for(i=8; i0; i-)DQ = 1;_nop_();_nop_();value = 1;DQ = 0;_nop_();/4us_nop_();_nop_();_nop_();DQ = 1;_nop_();/4us_nop_();_nop_();_nop_();if(DQ)value |= 0x80; /把数据读回来delay(6);/66us/等待DQ = 1;return value;/读出温度函数void read_temp(void)U8 temp_data2 ; /俩个八位ow_reset(); /总线复位delay(200);write_byte(0xcc); /发命令使用ROMwrite_byte(0x44); /发转换命令使用总线ow_reset(); /delay(1);write_byte(0xcc); /发命令write_byte(0xbe); /发送读指令temp_data0=read_byte(); /读温度值的第字节temp_data1=read_byte(); /读温度值的高字节 Temper = (U16)temp_data1 8)/设置八位set = 1;break;case BACK:set = 0;/返回break;default:break; /报警温度设置void Temp_Set(void)BEEP = 1;/设置时关闭报警switch(set)case TEMP_L_0:if(key_value = UP)if(+Temp_l0 9)Temp_l0 = 0;if(key_value = DOWN)if(-Temp_l0 9)Temp_l1 = 0;if(key_value = DOWN)if(-Temp_l1 9)Temp_l2 = 0;if(key_value = DOWN)if(-Temp_l2 9)Temp_h0 = 0;if(key_value = DOWN)if(-Temp_h0 9)Temp_h1 = 0;if(key_value = DOWN)if(-Temp_h1 9)Temp_h2 = 0;if(key_value = DOWN)if(-Temp_h2 =temp_l_r & temp_now_r 4; /移位4次 右移 小数没有 是整数 s = (Temper&0x000f)*100/16; /小数转换0.0625buffer7 = s/10;buffer6 = z%10;buffer5 = z/10;buffer4 = 16;buffer3 = 16;buffer2 = 16;buffer1 = 16;buffer0 = 16;void Temp_Buff(void)if(set 0)/显示设置温度Current_Set();else/显示当前温度Temp_Now();/显示缓冲区数据void Display(void)Temp_Buff();/数据送入缓冲区DIG = led_7_a17; / /先关掉当前显示的，再显示传输来的值if(move = 6 | (move=2&set!=0) ) / /设置小数点位置 俩个小数点SEG = led_7_abuffermove & led_7_a19; / /显示数和小数点elseSEG = led_7_abuffermove;DIG = position_amove; / /动态扫描if(+move = 8)move = 0;/定时器初始化void Init_Time(void)TMOD = 0x22; 00100010 方式2 自动重装初值 2 8 256 TH0=TL0 (256-6)*1us=250us)TH0 = 6; TL0 = 6;TH1 = 6;TL1= 6;TR0 = 1; ET0 = 1;TR1 = 1; ET1 = 1; EA = 1;int main(void)Init_Time();while(1)if(set = 0)if(flag_1s = 1)flag_1s = 0;EA = 0;/关闭中断read_temp();EA = 1; /开启中断/报警Ring();if(flag_key = 2)flag_key = 0;Key_Switch();/温度设置if(set 0)Temp_Set();/定时器0中断void Time_0(void) interrupt 1/实时时间if(+count_1 = 40)count_1 = 0;if(+count_2 = 100)count_2 = 0;flag_1s = 1;/1s/定时器1中断void Time_1(void) interrupt 3/显示扫描if(+count_dis = 10)count_dis = 0;Display();/闪烁if(+count_flash = 100)count_