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/************************************************************
STC12C5A60S2 11.0592MHz
************************************************************/
#include <STC12C5A60S2.h>
#include <intrins.h>
#include <math.h>
#define uchar unsigned char
#define uint unsigned int
#define nop _nop_()
#define RECEIVE_SIZE 255
#define SEND_TEMP_ELECTRICITY_VALUE 0XFF
#define SEND_TEMP1_VALUE 0X00
#define SEND_TEMP2_VALUE 0X01
sbit TP2_alm = P2^2;
sbit TP1_alm = P2^1;
sbit F_PG = P1^4;
sbit F_pwm = P1^3;
sbit TP2 = P1^1;
sbit TP1 = P1^0;
uint n2, ValueDelayCount=0, CT_conut1 = 0, CT_conut2 = 0;
uint ReceiveBuf[6]=0,ReceiveTotal=0;
float value = 0;
int temp1, temp2;
char *reg;
char temp1buf[6] = 0, temp2buf[6] = 0;
int len1 = 0, len2 = 0;
const double eps = 1e-11;
void T1init(void){
AUXR |= 0x40;
TMOD &= 0x0F;
TMOD |= 0x10;
TL1 = 0xCD;
TH1 = 0xD4;
TF1 = 0;
TR1 = 1;
ET1=1;
EA=1;
}
void delay_ms(uint n){
uint i,j;
for (i=0;i<n*10;i++)
for(j=0;j<363;j++);
}
/*
void delay_us(uint t){
do{
nop; nop;
nop; nop;
nop; nop;
nop; nop;
nop; nop;
}while(t--);
}
*/
void delay_us(uchar t){ // 延時:1.6us~232us
uchar i;
for(i = t; i > 0 ; i--);
}
/*
void Delay_T0(uint t) { // t = time(us) * fosc(MHz) - 45 延時:5us ~ 5ms
AUXR |= 0x80;
TMOD &= 0xF0;
TMOD |= 0x01;
t = 65536 - t;
TL0 = t;
TH0 = t >> 8;
TR0 = 1;
while (!TF0);
TR0 = 0;
TF0 = 0;
}
*/
void UART1_Init(void){ // 115200bps @11.0592MHz
PCON &= 0x7F;
SCON = 0x50;
AUXR |= 0x04;
BRT = 0xFD;
AUXR |= 0x01;
AUXR |= 0x10;
ES = 1;
}
void SendByte(uint SendData){
SBUF = SendData;
while(TI == 0);
TI = 0;
}
/*************************************
* DS18B20溫度傳感器控制函數 *
*************************************/
void TP1_DS18B20_Rst(void){
TP1 = 0;
delay_us(250);
delay_us(250);
delay_us(250); // 延時 750us
TP1 = 1;
delay_us(15); // 延時 15us
nop;
}
void TP2_DS18B20_Rst(void){
TP1 = 0;
delay_us(250); // 延時 750us
delay_us(250);
delay_us(250);
TP1 = 1;
delay_us(15); // 延時 15us
}
uint TP1_DS18B20_Check(void){
uint retry=0;
while(TP1&&retry<200){
retry++;
delay_us(1);
}
if(retry>=200)
return 1;
else
retry=0;
while(!TP1&&retry<240){
retry++;
delay_us(1);
}
if(retry>=240)
return 1;
return 0;
}
uint TP2_DS18B20_Check(void)
{
uint retry=0;
while(TP2&&retry<200){
retry++;
delay_us(1);
}
if(retry>=200)
return 1;
else
retry=0;
while(!TP2&&retry<240){
retry++;
delay_us(1);
}
if(retry>=240)
return 1;
return 0;
}
void TP1_DS18B20_Write_Byte(uint dat){
uint i;
uint testb;
for(i=0; i<8; i++){
testb=dat&0x01;
dat=dat>>1;
if(testb){
TP1=0; // Write 1
delay_us(2); // 2us
TP1=1;
delay_us(60); // 60us
}else{
TP1=0; // Write 0
delay_us(60);
TP1=1;
delay_us(2);
}
}
}
void TP2_DS18B20_Write_Byte(uint dat){
uint i;
uint testb;
for(i=0; i<8; i++){
testb=dat&0x01;
dat=dat>>1;
if(testb){
TP2=0; // Write 1
delay_us(2); // 2us
TP2=1;
delay_us(60); // 60us
}else{
TP2=0; // Write 0
delay_us(60);
TP2=1;
delay_us(2);
}
}
}
uint TP1_DS18B20_Read_Bit(void){
uint dat;
TP1 = 0;
delay_us(1); // 2us
TP1 = 1;
delay_us(12); // 12us
if(TP1)dat = 1;
else dat = 0;
delay_us(50); // 50us
return dat;
}
uchar TP1_DS18B20_Read_Byte(void){
uint i,j,dat;
dat=0;
for(i=1;i<=8;i++){
j=TP1;
dat=(j<<7)|(dat>>1);
}
return dat;
}
uchar TP2_DS18B20_Read_Bit(void){
uint dat;
TP2 = 0;
delay_us(1); // 2us
TP2 = 1;
delay_us(12); // 12us
if(TP2)dat = 1;
else dat = 0;
delay_us(50); // 50us
return dat;
}
uchar TP2_DS18B20_Read_Byte(void){
uint i,j,dat;
dat=0;
for(i=1;i<=8;i++){
j=TP2;
dat=(j<<7)|(dat>>1);
}
return dat;
}
void TP1_DS18B20_Start(void){
TP1_DS18B20_Rst();
TP1_DS18B20_Check();
TP1_DS18B20_Write_Byte(0xcc);
TP1_DS18B20_Write_Byte(0x44);
}
void TP2_DS18B20_Start(void){
TP2_DS18B20_Rst();
TP2_DS18B20_Check();
TP2_DS18B20_Write_Byte(0xcc);
TP2_DS18B20_Write_Byte(0x44);
}
short TP1_DS18B20_ReadTemperature(void){
uint TL,TH;
uint temp;
short tem;
EA = 0;
TP1_DS18B20_Start ();
TP1_DS18B20_Rst();
TP1_DS18B20_Check();
TP1_DS18B20_Write_Byte(0xCC);
TP1_DS18B20_Write_Byte(0xBE);
TL = TP1_DS18B20_Read_Byte();
TH = TP1_DS18B20_Read_Byte();
EA = 1;
if(TH>7){
TH=~TH;
TL=~TL;
temp=0;
}else temp=1;
tem=TH;
tem<<=8;
tem+=TL;
tem=(float)tem*0.625;
if(temp)
return tem;
else
return -tem;
}
short TP2_DS18B20_ReadTemperature(void){
uint TL,TH;
uint temp;
short tem;
EA = 0;
TP1_DS18B20_Start ();
TP1_DS18B20_Rst();
TP1_DS18B20_Check();
TP1_DS18B20_Write_Byte(0xCC);
TP1_DS18B20_Write_Byte(0xBE);
TL = TP1_DS18B20_Read_Byte();
TH = TP1_DS18B20_Read_Byte();
EA = 1;
if(TH>7){
TH=~TH;
TL=~TL;
temp=0;
}else temp=1;
tem=TH;
tem<<=8;
tem+=TL;
tem=(float)tem*0.625;
if(temp)
return tem;
else
return -tem;
}
void float_to_str(char *str,float num){
int high;
float low, tp;
char *start=str;
int n=0;
char ch[20];
int i;
high=(int)num;
low=num-high;
while(high>0){
ch[n++]='0'+high%10;
high=high/10;
}
for(i=n-1;i>=0;i--){
*str++=ch[i];
}
num -= (int)num;
tp = 0.1;
*str++='.';
while(num > eps){
num -= tp * (int)(low * 10);
tp /= 10;
*str++='0'+(int)(low*10);
low=low*10.0-(int)(low*10);
}
*str='\0';
str=start;
}
void time1(void) interrupt 3
{
CY = 0;
TL1 += 0xDA;
TH1 = 0xD4 + (uchar)CY;
n2 ++;
if(n2 == 250){
temp1 = TP1_DS18B20_ReadTemperature();
float_to_str(&temp1buf,temp1);
}else if(n2 >= 500){
n2 = 0;
temp2 = TP2_DS18B20_ReadTemperature();
float_to_str(&temp2buf,temp2);
}
ValueDelayCount++;
}
void UART1_Int(void) interrupt 4
{
if(RI==1)
{
RI=0;
ReceiveBuf[ReceiveTotal]=SBUF;
ReceiveTotal++;
if(ReceiveTotal>=RECEIVE_SIZE)
{
ReceiveTotal=RECEIVE_SIZE;
}
}
}
void SendTEMPValue(void){
if(ValueDelayCount>=500){ //500ms
ValueDelayCount=0;
SendByte(SEND_TEMP_ELECTRICITY_VALUE);
SendByte(SEND_TEMP1_VALUE);
for(len1 = 0; len1 < 6; len1++){
SendByte(temp1buf[len1]);
}
SendByte(SEND_TEMP_ELECTRICITY_VALUE);
SendByte(SEND_TEMP2_VALUE);
for(len2 = 0; len2 < 6; len2++){
SendByte(temp2buf[len2]);
}
}
}
void main(void){
P1M1=0x00;
P1M0=0xFF;
P2M1=0x00;
P2M0=0xFF;
TP1_alm = 0;
TP2_alm = 0;
UART1_Init();
delay_ms(500);
T1init();
delay_ms(500);
TP1_alm = 1;
TP2_alm = 1;
while (1){
SendTEMPValue();
}
}

復制代碼

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