C监控CPU温度.docVIP

C语言编写的CPU测试温度程序 // Target : M8// Crystal: 8.0000Mhz /********************************************************************************? 不可在RESET时做LCD显示，因为DS18B20的复位回应时间只有80us,显示一个字符的时间?? 远大于这个值********************************************************************************/ #include iom8v.h#include macros.h#include 1602Driver.h #define? Set_DQ1??????? DDRC |= 0x08;? PORTC |= 0x08;???????? //总线拉高#define? Set_DQ0??????? DDRC |= 0x08;? PORTC = 0xf7;???????? //总线置低#define? Read_DQ??????? PINC0x08???????????????????????????? //读总线#define? MatchROM?????? 0xcc????????????????????????????????? //匹配ROM#define? WriteMode????? 0x4e????????????????????????????????? //写模式#define? TH???????????? 0x64????????????????????????????????? //设置温度上限100#define? TL???????????? 0x8a????????????????????????????????? //设置温度下限-10#define? MatchTemp????? 0x7f????????????????????????????????? //写温度匹配寄存器,12bit#define? ConverTem????? 0x44????????????????????????????????? //DS18B20温度转换命令#define? Get_Value????? 0xbe????????????????????????????????? //读取温度寄存器值??char DelayMs = 0;void port_init(void){?? DDRD? = 0xff;?? PORTD = 0xff;?? DDRB? = 0xff;?? PORTB = 0xff;?? DDRC? = 0xff;?? PORTC = 0xff;} //TIMER1 initialize - prescale:1// WGM: 0) Normal, TOP=0xFFFF// desired value: 15uSec// actual value: 14.875uSec (0.8%)void timer1_init(void){?TCCR1B = 0x00; //stop?TCNT1H = 0xFF; //setup?TCNT1L = 0x89;?OCR1AH = 0x00;?OCR1AL = 0x77;?OCR1BH = 0x00;?OCR1BL = 0x77;?ICR1H? = 0x00;?ICR1L? = 0x77;?TCCR1A = 0x00;?TCCR1B = 0x01; //start Timer} #pragma interrupt_handler timer1_ovf_isr:9void timer1_ovf_isr(void){?? //TIMER1 has overflowed?? TCNT1H = 0xFF; //reload counter high value?? TCNT1L = 0x89; //reload counter low value?? if (DelayMs 0)?? {????? DelayMs --;?? }??} void Delay_15us(unsigned int n)/*---Ms延时函数---*/{?? DelayMs=n;?? while(DelayMs 0);??} /****************************************************************? 功能：主机向总线写0?????????????????????????????