IR sensor not working as expected in atmega 32

[SHUBHAM AGIWAL]

hey friends i am trying to interface an ir sensor wih atmega 32 which gives a ttl output such that when an obsatcle is detected it glow the led. but sadly the led glows all the time. i want it to glow only when the obstacle is detected.

here is the code

#include
#include

void main()
{
DDRA=0xf0;// PA0 is the input
// PA7 is the led pin

while(1)
{
if(PINA & 0b00000001)
{
PORTA=0x80;
_delay_ms(10);
PORTA=0x00;
_delay_ms(10);
}
}
}

[Amrith]

Hi Subham,

Kindly share your schematics to verify.

[AJISH ALFRED]

 

Please post your circuit diagram also.

[Author]

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