WATER LEVEL INDICATOR USING 8051 MICROCONTROLLER

WATER LEVEL INDICATOR 8051 MICROCONTROLLER CODE.

#define  F_CPU 8000000UL
#include
#include

int main(void)
{
DDRB = 0x00; // PORTB pins as input
DDRD = 0xff; // PORTD as output
DDRC = 0x01; // Buzzer
unsigned char seg[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x67};
    while(1)
    {
        if((PINB & 0xff)==0x00) // 8th probe, Tank full
{
PORTC = 0x01;
PORTD = seg[8];
}
else if((PINB & 0xff)==0x01) // 7th probe
{
PORTC = 0x01;
_delay_ms(500);
PORTC = 0x00;
_delay_ms(500);
PORTD = seg[7];
}
else if((PINB & 0xff)==0x03) // 6th probe
{
PORTC = 0x00;
PORTD = seg[6];
}
else if((PINB & 0xff)== 0x07) // 5th probe
{
PORTC = 0x00;
PORTD = seg[5];
}
else if((PINB & 0xff)== 0x0f) // 4th probe
{
PORTC = 0x00;
PORTD = seg[4];
}
else if((PINB & 0xff)==0x1f) // 3rd probe
{
PORTC = 0x00;
PORTD = seg[3];
}
else if((PINB & 0xff) == 0x3f) // 2nd probe
{
PORTC = 0x00;
PORTD = seg[2];
}
else if((PINB & 0xff) == 0x7f) // 1st probe
{
PORTC = 0x00;
PORTD = seg[1];
}
else                                // Tank empty
{
PORTC = 0x00;
PORTD = seg[0];
}
    }
}