pic18f452 to read voltage and display on lcd

[ANAMIKA VYAS]

i have to design a pic to read voltage, analog signal is set to an0 and display the result on lcd.but imam getting error.it says undefined identifier for”ANSEL=0x04″. i am attaching the code also. i am using mickroc.

// LCD module connections

sbit LCD_RS at RB4_bit;

sbit LCD_EN at RB5_bit;

sbit LCD_D4 at RB0_bit;

sbit LCD_D5 at RB1_bit;

sbit LCD_D6 at RB2_bit;

sbit LCD_D7 at RB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;

sbit LCD_EN_Direction at TRISB5_bit;

sbit LCD_D4_Direction at TRISB0_bit;

sbit LCD_D5_Direction at TRISB1_bit;

sbit LCD_D6_Direction at TRISB2_bit;

sbit LCD_D7_Direction at TRISB3_bit;

// End LCD module connections

 

unsigned char ch;                    //

unsigned int adc_rd;                 // Declare variables

char *text;                          //

long tlong;                          //

 

void main() {

    INTCON = 0;                      // All interrupts disabled

    ANSEL = 0x04;                    // Pin RA2 is configured as an analog input

    TRISA = 0x04;

    ADCON1 = 0;                      // Rest of pins are configured as digital

   

    Lcd_Init();                      // LCD display initialization

    Lcd_Cmd(_LCD_CURSOR_OFF);        // LCD command (cursor off)

    Lcd_Cmd(_LCD_CLEAR);             // LCD command (clear LCD)

   

    text = “mikroElektronika”;       // Define the first message

    Lcd_Out(1,1,text);               // Write the first message in the first line

    text = “LCD example”;            // Define the second message

    Lcd_Out(2,1,text);               // Define the first message

   

    ADCON1 = 0x82;                   // A/D voltage reference is VCC

    TRISA = 0xFF;                    // All port A pins are configured as inputs

    Delay_ms(2000);

   

    text = “voltage:”;               // Define the third message

   

    while (1) {

        adc_rd = ADC_Read(2);        // A/D conversion. Pin RA2 is an input.

        Lcd_Out(2,1,text);           // Write result in the second line

        tlong = (long)adc_rd * 5000; // Convert the result in millivolts

        tlong = tlong / 1023;        // 0..1023 -> 0-5000mV

        ch = tlong / 1000;           // Extract volts (thousands of millivolts)

                                     // from result

        Lcd_Chr(2,9,48+ch);          // Write result in ASCII format

        Lcd_Chr_CP(‘.’);

        ch = (tlong / 100) % 10;     // Extract hundreds of millivolts

        Lcd_Chr_CP(48+ch);           // Write result in ASCII format

        ch = (tlong / 10) % 10;      // Extract tens of millivolts

        Lcd_Chr_CP(48+ch);           // Write result in ASCII format

        ch = tlong % 10;             // Extract digits for millivolts

        Lcd_Chr_CP(48+ch);           // Write result in ASCII format

        Lcd_Chr_CP(‘V’);

        Delay_ms(1);

    }

}

 

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