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Good morning,
We are facing a problem using Altera GPIO driver & SysFS on our system. Our design include: - A Nios2 processor running rel_socfpga-3.16_14.09.02 Linux version. - 1 Altera pio IP who handle 8 inputs - 1 Altera pio IP who handle 8 outputs - 1 Altera pio IP who handle 8 bidirectionnals signals We can export using SysFS all I/O off the design and drive out every output signal. However, we are able to read only one of the 8 input values. Same phenomenon for bidirectionnal signal after setting theire direction to input. Input values are always seen as '1'. For example: 8 bidir set as input are exported from gpio248 to gpio255. All of them are connected to GND. Only gpio255 value is correct ( value = 0) The others values stay at 1. Does anyone knows this problem and a solution? Regards,Link Copied
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