pt100温度传感器c语言,pt100测温程序-LCD1602

迈不过友情╰ 2022-10-15 11:56 244阅读 0赞

原标题：pt100测温程序-LCD1602

![5882029bbd70fef4dda625292165161d.png][]

\#include"at89X52.h"

sbit LCD\_RS =P2^0;

sbit LCD\_RW =P2^1;

sbit LCD\_E =P2^2;

sbit ADC\_CS =P2^3;

sbit ADC\_WR =P3^6;

sbit ADC\_RD =P3^7;

\#define LCD\_DATA P0

unsigned char LcdBuf1\[10\]="";

unsigned char code Bmp001\[\]\[8\]=

\{0x06,0x09,0x09,0x06,0x00,0x00,0x00,0x00\},

\{0x06,0x09,0x10,0x10,0x10,0x09,0x06,0x00\}

\};

void dellay(unsigned int h)

while(h--); //0.01MS

void WriteDataLcd(unsigned char wdata)

LCD\_DATA=wdata;

LCD\_RS=1;

LCD\_RW=0;

LCD\_E=0;

dellay(1000);

LCD\_E=1;

void WriteCommandLcd(unsigned char wdata)

LCD\_DATA=wdata;

LCD\_RS=0;

LCD\_RW=0;

LCD\_E=0;

dellay(1000);

LCD\_E=1;

void lcd\_init(void)

LCD\_DATA=0;

WriteCommandLcd(0x38);

dellay(1000);

WriteCommandLcd(0x38);

dellay(1000);

WriteCommandLcd(0x01);

WriteCommandLcd(0x0c);

void display\_xy(unsigned char x,unsigned char y)

if(y==1)

x+=0x40;

x+=0x80;

WriteCommandLcd(x);

void display\_string(unsigned char x,unsigned char y,unsigned char \*s)

display\_xy(x,y);

while(\*s)

WriteDataLcd(\*s);

s++;

void Write\_CGRAM(unsigned char add,unsigned char \*char\_num)

unsigned i;

add=add<<3;

WriteCommandLcd(0x40|add+8);

for(i=0;i<8;i++)

WriteDataLcd(\*char\_num++);

void delayms()

int i;

for(i=110;i>0;i--);

void delay1s()

int i,j;

for(i=1000;i>0;i--);

for(j=110;j>0;j--);

void convert()

unsigned long value;

char i;

unsigned long res;

int temp,temp2;

int w;

P1=0xff;

ADC\_RD=0;

for(i=0;i<10;i++);

value=P1;

res=(float)(2550000+110000\*value/30)/(2550-11\*value/30);

temp=(float)(res\*10000-10000000)/3851-545;

temp2 = temp;

if(temp >= 0)

for(i=6;temp>0;i--)

LcdBuf1\[i\]=temp%10+48;

temp/=10;

if(temp < 0 )

w= -temp;

for(i=6;w>0;i--)

LcdBuf1\[i\]=w%10+48;

w/=10;

if(i>=0&&temp<0)

if(temp > -10)

LcdBuf1\[i\] = '0';

i--;

LcdBuf1\[i\] = '-';

i--;

/\* if(i==5)

LcdBuf1\[5\] = '0';

i --;

LcdBuf1\[4\] = '-';

i--; \*/

for(;i>=0;i--)

LcdBuf1\[i\]=' ';

for(i=0;i<5;i++)

LcdBuf1\[i\]=LcdBuf1\[i+1\];

if(LcdBuf1\[4\]==' ')LcdBuf1\[4\]='0';

LcdBuf1\[5\]='.';

LcdBuf1\[7\]=1;

LcdBuf1\[8\]='C';

WriteCommandLcd(0x84);

display\_string(3,0,LcdBuf1);

ADC\_RD=1;

ADC\_WR=0;

for(i=0;i<10;i++)

ADC\_WR=1;

delayms();

main()

unsigned char i;

lcd\_init();

for(i=0;i<2;i++)

Write\_CGRAM(i,Bmp001\[i\]);

ADC\_CS=0;

ADC\_WR=0;

for(i=0;i<10;i++);

ADC\_WR=1;

while(1)

convert();

delay1s();

责任编辑：

[5882029bbd70fef4dda625292165161d.png]: /images/20221014/3f29a4206c5842058cb4caffac0cea17.png

pt100温度传感器c语言,pt100测温程序-LCD1602

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