งานที่ 12 Digital Thermometer using PIC Microcontroller and LM35 Temperature Sensor

code

// LCD module connections
sbit LCD_RS at RB2_bit;
sbit LCD_EN at RB3_bit;
sbit LCD_D4 at RB4_bit;
sbit LCD_D5 at RB5_bit;
sbit LCD_D6 at RB6_bit;
sbit LCD_D7 at RB7_bit;

sbit LCD_RS_Direction at TRISB2_bit;
sbit LCD_EN_Direction at TRISB3_bit;
sbit LCD_D4_Direction at TRISB4_bit;
sbit LCD_D5_Direction at TRISB5_bit;
sbit LCD_D6_Direction at TRISB6_bit;
sbit LCD_D7_Direction at TRISB7_bit;
// End LCD module connections

int t;
char a;
char lcd[] = "000 Degree";

void main()
{
  ADCON1 = 0x04;
  Lcd_Init();
  Lcd_Cmd(_LCD_CURSOR_OFF);

  do
  {
    Lcd_Cmd(_LCD_CLEAR);
    Lcd_out(1,1, "Temperature:");
    t = ADC_Read(0);

    t = t * 0.4887;
    a = t%10;
    lcd[2] = a + '0';

    t = t/10;
    a = t%10;
    lcd[1] = a + '0';

    t = t/10;
    a = t%10;
    lcd[0] = a + '0';

    Lcd_out(2,1,lcd);
    Delay_ms(100);
  }while(1);
}

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