GPIO PL mapping

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Hi,
in the ZedBoard there is a mapping of LED0-7 and SW0-7 to gpio: 61 to 68 for LEDs and 69 to 76 for switches

Where is this mapping described within the Linux?

And how can I modify SW in order to map the buttons BTNU, BTND... to a gpio such that I can read the status of these buttons in the same way I can read SW0-7?

Where can I read a generic description of these HW/SW topics?

Regards

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0 Former Member over 11 years ago

Hi

The buttons cannot be mapped to GPIO because they are connected to the PL section. If you want to use them there is a good tutorial available at the link below. It's targeted at the zc702 evaluation board but if you change the constraints you can make it work for the Zedboard.

http://www.xilinx.com/training/embedded/embedded-design-tutorials.htm

Matthew
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0 Former Member over 11 years ago

Hi

The buttons cannot be mapped to GPIO because they are connected to the PL section. If you want to use them there is a good tutorial available at the link below. It's targeted at the zc702 evaluation board but if you change the constraints you can make it work for the Zedboard.

http://www.xilinx.com/training/embedded/embedded-design-tutorials.htm

Matthew
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