Raspberry Pi Forums

Posted: **Thu Oct 30, 2014 6:46 pm**

Hello,

Please help me!
I want to program GPIO for 2 keys.
I connected a button with the GND and pin 24 and the other to GND and pin 20 are.
The key with 24 works well and output is as expected, but it happens nothing when I press button 20. Also, there are no errors when compiling.
Please take a look at the code , http://pastebin.com/RiDrfaXs

Any help is greatly appreciated!
thanks,

Posted: **Thu Oct 30, 2014 6:48 pm**

Pin 20 is connected to ground. It is NOT a gpio.

Posted: **Thu Oct 30, 2014 7:35 pm**

joan wrote:Pin 20 is connected to ground. It is NOT a gpio.

The OP's code is using BCM pin numbering. So GPIO24 is pin#18 and GPIO20 is pin#38.

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