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#include <aduc812.h>
#include <intrins.h>
sbit led0=P3^4; //P3.4 jP3.7 ¨T 4 ê LED ￥êêL
sbit led1=P3^5;
sbit led2=P3^6;
sbit led3=P3^7;
sbit DQ = P2^4; //P2.4 ¨T DS18B20 ￥
L DQ
float data TMP[2]={0,0}; // |a￥ 2 ??′,| "[ 2 ' V¤
L=?;
unsigned char data f[2]={0,0}; //2T
^?1μ?,"0"1??,"1"1μ? b
unsigned char data disp_buf[4]={0,0,0,0}; //4 ê
5?￥′b ??
u
unsigned char data dot_position=0;
unsigned char data chno=0; //?
^ DS18B20
//iò
^ DS18B20 ￥1??
|1L??
ko
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2
^ V[ ? ? 8
^÷
unsigned char code SN[2][8]={ {16,62,148,60,0,0,0,247},{16,229,146,60,0,0,0,
87} };
//
3 0 j9Y?4
U? A jH ￥
unsigned char code
seg_table[ ]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,
0x77,0x7c,0x39,0x5e,0x79,0x71,0x6f,0x76};
unsigned char code CH[ ]={10,11,12,13,14,15,16,17}; //Y?4
U?￥
êM
//| 0.00 j999 -W￥??
1??
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A
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ê?
void ftochar(float valp)
{
if(valp<10.0)
{
dot_position=1;
valp *=100.0;
}
else if((valp>=10.0)&&(valp<100.0))
{
dot_position=2;
valp *=10.0;
}
else if((valp>=100.0)&&(valp<1000.0)) dot_position=3;
disp_buf[1]=(int)valp/100;
disp_buf[2]=((int)valp%100)/10;
disp_buf[3]=((int)valp%100)%10;
}
//ü
H 15 ±
ó￥f
void delay(unsigned char n)
{
do {
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_(); //_nop_()￥hóq1intrins.h
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
n--;
}while(n);
}
//DS18B20 ˉêf
?ˉê
H?é?
!9
void ow_reset(void)
{
DQ = 0; // DQ ?1?è
ü
delay(36); // ? 4800 s
DQ = 1; // DQ ?1úè
ü
delay(24); // ü
H? DS18B20
{?è
ü
}
//DS18B20 êf
? ê
H?é?
!9
unsigned char read_bit(void)
{
unsigned char i;
DQ = 0; // DQ ?1?è
ü
DQ = 1; // DQ ?1úè
ü
for (i=0; i<5; i++); // ü
H 150 s
return(DQ); // Rí DQ L￥è
ü
}
// DS18B20 êf
?ê
H?é?
!9
void write_bit(char bitval)
{
DQ = 0; // DQ ?1?è
ü
if(bitval==1) DQ =1; // ?T1 5DQ ?1úè
ü
delay(6); // ü
H[??è
ü
DQ = 1; // DQ ?1úè
ü
}
// VDS18B20 |3?￥f
unsigned char read_byte(void)
{
unsigned char i;
unsigned char value = 0;
for (i=0;i<8;i++)
{
if(read_bit()) value|=0x01<<i; //?¨ êf
￥ 8 ?êMê? 1 ?3?
delay(11); //ü
H[ ?/￥ê
}
return(value);
}
//3??DS18B20 ￥f
void write_byte(char val)
{
unsigned char i;
unsigned char temp;
for (i=0; i<8; i++) //
Q1 ê 1 ?3?s 8 Q??
{
temp = val>>i;
temp &= 0x01;
write_bit(temp); //?¨êf
}
delay(10); //ü
H
}
// VDS18B20 t?}
void read_temp ()
{
unsigned char i,j;
unsigned char a,b;
int mr;
for(j=0;j<2;j++) //1L??
k?[ 2
^1 è??ìQ
' V ? ? 8
^
÷
{
ow_reset(); //?¨ˉêf
delay(20);
write_byte (0x55); //?
ROM
￥
7
for(i=0;i<8;i++)
{
write_byte(SN[j][i]); //?
64 ê?
|
}
write_byte (0xbe); //?
| i7i ￥
7
a = read_byte(); // ?? |
ê??/
àμ
L=
P¨
H?
μ
b = read_byte(); // ié?n[4ú V L?
mr=b*256+a;
if((mr&0xf800)!=0) mr=-mr+1;
TMP[j]=mr*0.5;
}
}
//?
H T0 ?f
? 1 QA
U 1 ê
5
void Time_disp(void) interrupt 1
{
static unsigned char dispno=0; //
5ê|
TH0=0xee; //?
111.0592?
H5ms ￥
HWè
1 EE00H
TL0=0x00;
P3|=0xf0;
P0=seg_table[disp_buf[dispno]]; //°? -
5￥A
U
3?￥
if(dispno==dot_position) P0|=0x80; //? -êμl
?5
Kúê? 1
switch(dispno) //? ? -A
U￥
5¤YêêL
{
case 0,led0=0; break;
case 1,led1=0; break;
case 2,led2=0; break;
case 3,led3=0; break;
}
dispno++;
if(dispno==4) dispno=0;
}
//?
H T1 ?? f
50ms ? 1 Q
void Timer1(void) interrupt 3
{
static unsigned int count;
TH1=0x4c; //50ms ?￥
HWè
1 4C00H
TL1=0x00;
count++;
if(count>=20) //? 20 Q'1 1
e
{
count=0;
ftochar(TMP[chno]); //? -Y??￥?′D1??
A
U
u
disp_buf[0]=CH[chno]; //? -Y?￥4
U?￥
êM
A
U
u
n1
?
chno++;
if(chno= =2) chno=0; //??N
?￥
′' V ? ? 8
^÷
}
}
//?f
main( )
{
TMOD=0x11; //?
H T0 T1 ?Z
T 1 yT
EA=1;
ET0=1;
ET1=1;
TH0=0xee; //5ms ?￥
HWè
TL0=0x00;
TH1=0x4c; //50ms ?￥
HWè
TL1=0x00;
TR0=1;
TR1=1;
do {
ow_reset( ); //ˉê DS18B20
write_byte(0xcc);
write_byte(0x44); // ? 1820
read_temp( ); //?¨ |?￥f
,2Ti? TMP[ ]
F?
}while(1);
}
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SETB EX0 ??? 0
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LOOP1 MOV R6 #0FFH
LOOP2 NOP
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DJNZ R7LOOP1
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DJNZ R2FLASH ?ì
RETI Rí
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#include <aduc812.h>
#include <intrins.h>
sbit led0=P3^4; //P3.4 jP3.7 ¨T 4 ê LED ￥êêL
sbit led1=P3^5;
sbit led2=P3^6;
sbit led3=P3^7;
sbit DQ = P2^4; //P2.4 ¨T DS18B20 ￥
L DQ
float data TMP[2]={0,0}; // |a￥ 2 ??′,| "[ 2 ' V¤
L=?;
unsigned char data f[2]={0,0}; //2T
^?1μ?,"0"1??,"1"1μ? b
unsigned char data disp_buf[4]={0,0,0,0}; //4 ê
5?￥′b ??
u
unsigned char data dot_position=0;
unsigned char data chno=0; //?
^ DS18B20
//iò
^ DS18B20 ￥1??
|1L??
ko
!9
2
^ V[ ? ? 8
^÷
unsigned char code SN[2][8]={ {16,62,148,60,0,0,0,247},{16,229,146,60,0,0,0,
87} };
//
3 0 j9Y?4
U? A jH ￥
unsigned char code
seg_table[ ]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,
0x77,0x7c,0x39,0x5e,0x79,0x71,0x6f,0x76};
unsigned char code CH[ ]={10,11,12,13,14,15,16,17}; //Y?4
U?￥
êM
//| 0.00 j999 -W￥??
1??
i
A
U
uRíl
?￥
ê?
void ftochar(float valp)
{
if(valp<10.0)
{
dot_position=1;
valp *=100.0;
}
else if((valp>=10.0)&&(valp<100.0))
{
dot_position=2;
valp *=10.0;
}
else if((valp>=100.0)&&(valp<1000.0)) dot_position=3;
disp_buf[1]=(int)valp/100;
disp_buf[2]=((int)valp%100)/10;
disp_buf[3]=((int)valp%100)%10;
}
//ü
H 15 ±
ó￥f
void delay(unsigned char n)
{
do {
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_(); //_nop_()￥hóq1intrins.h
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
n--;
}while(n);
}
//DS18B20 ˉêf
?ˉê
H?é?
!9
void ow_reset(void)
{
DQ = 0; // DQ ?1?è
ü
delay(36); // ? 4800 s
DQ = 1; // DQ ?1úè
ü
delay(24); // ü
H? DS18B20
{?è
ü
}
//DS18B20 êf
? ê
H?é?
!9
unsigned char read_bit(void)
{
unsigned char i;
DQ = 0; // DQ ?1?è
ü
DQ = 1; // DQ ?1úè
ü
for (i=0; i<5; i++); // ü
H 150 s
return(DQ); // Rí DQ L￥è
ü
}
// DS18B20 êf
?ê
H?é?
!9
void write_bit(char bitval)
{
DQ = 0; // DQ ?1?è
ü
if(bitval==1) DQ =1; // ?T1 5DQ ?1úè
ü
delay(6); // ü
H[??è
ü
DQ = 1; // DQ ?1úè
ü
}
// VDS18B20 |3?￥f
unsigned char read_byte(void)
{
unsigned char i;
unsigned char value = 0;
for (i=0;i<8;i++)
{
if(read_bit()) value|=0x01<<i; //?¨ êf
￥ 8 ?êMê? 1 ?3?
delay(11); //ü
H[ ?/￥ê
}
return(value);
}
//3??DS18B20 ￥f
void write_byte(char val)
{
unsigned char i;
unsigned char temp;
for (i=0; i<8; i++) //
Q1 ê 1 ?3?s 8 Q??
{
temp = val>>i;
temp &= 0x01;
write_bit(temp); //?¨êf
}
delay(10); //ü
H
}
// VDS18B20 t?}
void read_temp ()
{
unsigned char i,j;
unsigned char a,b;
int mr;
for(j=0;j<2;j++) //1L??
k?[ 2
^1 è??ìQ
' V ? ? 8
^
÷
{
ow_reset(); //?¨ˉêf
delay(20);
write_byte (0x55); //?
ROM
￥
7
for(i=0;i<8;i++)
{
write_byte(SN[j][i]); //?
64 ê?
|
}
write_byte (0xbe); //?
| i7i ￥
7
a = read_byte(); // ?? |
ê??/
àμ
L=
P¨
H?
μ
b = read_byte(); // ié?n[4ú V L?
mr=b*256+a;
if((mr&0xf800)!=0) mr=-mr+1;
TMP[j]=mr*0.5;
}
}
//?
H T0 ?f
? 1 QA
U 1 ê
5
void Time_disp(void) interrupt 1
{
static unsigned char dispno=0; //
5ê|
TH0=0xee; //?
111.0592?
H5ms ￥
HWè
1 EE00H
TL0=0x00;
P3|=0xf0;
P0=seg_table[disp_buf[dispno]]; //°? -
5￥A
U
3?￥
if(dispno==dot_position) P0|=0x80; //? -êμl
?5
Kúê? 1
switch(dispno) //? ? -A
U￥
5¤YêêL
{
case 0,led0=0; break;
case 1,led1=0; break;
case 2,led2=0; break;
case 3,led3=0; break;
}
dispno++;
if(dispno==4) dispno=0;
}
//?
H T1 ?? f
50ms ? 1 Q
void Timer1(void) interrupt 3
{
static unsigned int count;
TH1=0x4c; //50ms ?￥
HWè
1 4C00H
TL1=0x00;
count++;
if(count>=20) //? 20 Q'1 1
e
{
count=0;
ftochar(TMP[chno]); //? -Y??￥?′D1??
A
U
u
disp_buf[0]=CH[chno]; //? -Y?￥4
U?￥
êM
A
U
u
n1
?
chno++;
if(chno= =2) chno=0; //??N
?￥
′' V ? ? 8
^÷
}
}
//?f
main( )
{
TMOD=0x11; //?
H T0 T1 ?Z
T 1 yT
EA=1;
ET0=1;
ET1=1;
TH0=0xee; //5ms ?￥
HWè
TL0=0x00;
TH1=0x4c; //50ms ?￥
HWè
TL1=0x00;
TR0=1;
TR1=1;
do {
ow_reset( ); //ˉê DS18B20
write_byte(0xcc);
write_byte(0x44); // ? 1820
read_temp( ); //?¨ |?￥f
,2Ti? TMP[ ]
F?
}while(1);
}
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@?
e b
ORG 0000H
LJMP MAIN ???
ORG 0003H ??? 0 ? g1?
LJMP EXTER ???
ORG 1000H
MAIN SETB IT0 ??? 0aμKμr
SETB EX0 ??? 0
?
SETB EA 9?
?
LOOP AJMP LOOP ???
ORG 1050H ??? ? g
EXTER MOV R2#0FFH ??ìQ
MOV A#01H §
′
FLASH RR A ·MBê
MOV R7 #0FFH
LOOP1 MOV R6 #0FFH
LOOP2 NOP
NOP èqü
H
DJNZ R6LOOP2
DJNZ R7LOOP1
MOV P1A §
DJNZ R2FLASH ?ì
RETI Rí
END
