Driver GPIO (LINUX) input

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ZedBoard Hardware Design Driver GPIO (LINUX) input

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Former Member over 11 years ago

Dear all,

Is the speedway (tutorial) ,where the LED-BRIGHTNESS.C is, can be used as input driver linux? It has a read function, but I can't transfer DATA from PL to PS throught the AXI GPIO (used on input). I use Zedboard, Xilinx Zynq7020, PlanAhead 14.2

if somebody could help me...

Thanks

Anis

0 Former Member over 11 years ago

Maybe this would help. The blog post listed below talks about accessing a custom FPGA logic connecting through an AXI bus. In the part two of the blog, it talks about accessing register data using memory map and UIO driver.
You can probably look at the UIO driver code to figure how to transfer data from PL to PS.

http://fpgacpu.wordpress.com/2013/05/28/how-to-design-and-access-a-memory-mapped-device-part-one/
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