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One might think. I did. But not always are the simple things to so simple.

But when I tried it the first the time, it ended up in an several days long story.

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and nothing, LED class is not there. Not compiled in. Bad luck.

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. Writing none to LED trigger would allow direct programmatic control over MIO7 LED on zedboard (labelled LD9!). 

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