//program Thermometer_with_LM35 + & -

// 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

unsigned temp;// unsigned (int)  0 .. 65535
unsigned tempn;
short tempout ; //(signed) short (int)  - 128 .. 127
char res[5];

void main(){

TRISA  = 0xFF;  // designate PORTA as input
TRISB  = 0; //   as outputs

 //Ideal standard

  Lcd_Init();                        // Initialize LCD

  Lcd_Cmd(_LCD_CLEAR);               // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);          // Cursor off
  Lcd_Out(1,1,"ENG.F.ABDELAZIZ");                 // Write text in first row
  Lcd_Out(2,1,"WELCOME");                 // Write text in second row
  Delay_ms(2000);
  Lcd_Cmd(_LCD_CLEAR);               // Clear display

  Lcd_Out(1,1,"ROOM TEMP.");                 // Write text in first row


  while (1) {
      temp = ADC_read(0);
      tempn = ADC_read(1);
      temp = temp/2.046;
      tempn = tempn/2.046;
      tempout = temp - tempn;

/* 
void ShortToStr(short input, char *output);
Converts input signed short number to a string
short t = -24;
char txt[5];
...
ShortToStr(t, txt);  // txt is " -24" (one blank here)
*/

      shortToStr(tempout,res);

      Lcd_Out(2,1,res);
      
/* 
Write character "i" at row 2, column 3:
Lcd_Chr(2, 3, 'i');
Write character "e" at current cursor position:
Lcd_Chr_Cp('e');*/
    Lcd_Chr_Cp(223);
    
    Lcd_Chr_Cp('C');
    delay_ms(1000);
  }
}