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LED with Xilinx Zynq

Zedboard OOB Design.

The SD Card images delivered with zedboard (and available as OOB SD Card images) include a kernel 3.09 with GPIO-LEDS enabled on MIO7 with default trigger set to MMC (SD Card) activity.

As newer Linux kernels for Xilinx seem to have the GPIO LED class not enabled by default it may not be possible to use Linux LED class on zedboard (if using standard kernels).

LED with RPi

The user LED on RPi is labelled ACT, and it is controllable directly using Linux LED subsystem, as default it is assigned to SD Card activity, that is why it is labelled "ACT".

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