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You are here: Home / Replies / Hi AhmetMake sure that you

Hi AhmetMake sure that you

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Microcontroller › AVR › help in input of atmega 8l › Hi AhmetMake sure that you

October 17, 2016 at 7:17 am #14199
GANEEV SINGH
Participant

Hi Ahmet

Make sure that you are defining a particular pin/port as input, also after that declare whether it is pulled up or not. Go as follows:

DDRC & = ~(1<<0);    // defined PORTC's 0 pin as i/p pin

PORTC | = (1<<0);     // declared it as a pulled up i/p pin

Now if you try reading this pin's value it will give you a high state unless any logic 0 is applied to it externally, this is because its pulled up.

This might help, good luck :)

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