/*
PIC16F877
Analog-to-digital converter
Oscillator * 4MHz, MCLR Enabled, PWRT Enabled, WDT OFF
*/
// LCD module connections
sbit LCD_RS at RB0_bit;
sbit LCD_EN at RB1_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 TRISB0_bit;
sbit LCD_EN_Direction at TRISB1_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
// Define Messages
char message1[] = "ADC Value= ";
char *temp = "0000";
unsigned int adc_Value;
void main() {
 
ADCON0 = 0b00000000; // Analog channel select * AN0 = DEFAULT
ADCON1 = 0b00001110 ; // RA0/AN0 is analog input
 
TRISB = 0b00000000; // PORTB All Outputs
TRISA = 0b00000001; // PORTA All Outputs, Except RA0 
Lcd_Init();                      // Initialize LCD
Lcd_Cmd(_LCD_CLEAR);             // CLEAR display
Lcd_Cmd(_LCD_CURSOR_OFF);        // Cursor off
Lcd_Out(1,1,message1);           // Write message1 in 1st row
do {
adc_value = ADC_Read(0);
temp[0] = adc_value/1000 + 48; // Add 48 to get the ASCII character value
temp[1] = (adc_value/100)%10 + 48;
temp[2] = (adc_value/10)%10 + 48;
temp[3] = adc_value%10 + 48;
Lcd_Out(1,11,temp);
Delay_ms(2000);
} while(1);
}