AM3505 GPIO Usage

challenger

Other Parts Discussed in Thread: AM3505

Hi,

I have question about using GPIO, the target device is AM3505.

I going to use 8 GPIO for input and output.
Which is the easiest way to use GPIO ?
(1)exchange it from the CPU directly?
(2)use device driver?

over 14 years ago

0 challenger002 over 14 years ago

Intellectual 690 points

Hi,

Does Linux-PSP for AM35x include GPIO Driver?

Otherwise what should I do to use GPIO on Linux application?

0 orbarron over 14 years ago in reply to challenger002

Expert 1600 points

The kernel supplied with SDK's should have GPIO enabled within the menuconfig. If you are looking or trying to understand how to setup and configure GPIO's under Linux I suggest you read the kernel documents for GPIO. This may provide you more information regarding GPIO's under Linux.

See:

http://www.kernel.org/doc/Documentation/gpio.txt

http://omappedia.org/wiki/GPIO -- may help out --> has example on triggering gpios under Linux

0 challenger over 14 years ago in reply to orbarron

Intellectual 370 points

Sorry about late response, I was out for summer vacation.

Thank you for answering my question.

I will take a look at the document which you showed.

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AM3505 GPIO Usage