[Moved] ATMEGA 8515 Port Pins Read

[Vindy789]

Dear all,

Started a new project using ATMEGA 8515. Here the 4 Switching Signals are the Inputs to the Controller Port Pins i.e. PortB (Pins 1-4). If any Switch is Pressed then an 5V DC supply is passing to the connected Pin. So here i need a help that how to read or compare the Port B pins status. Please help me on this with the Source code.

Thanks in Advance.

 

[ismbn]

Hi
To Read pins in AVR you can use PINX--- where x may be A,B,C or D etc. this is for hole PORT read...
you can read individually by using

PINB0 // for 1st pin in port b 
PINB1 // for 2nd pin in port b

also
for check the status of the pin you can use

if(bit_is_set(PORTB,0)) 
{

}

Hope this will help

Ismail