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Accessing GPIOsfrom user space

Ciphertelecom
Intellectual 270 points

Other Parts Discussed in Thread: DM3730

Hi, i'm trying with the DM3730 evm from Mistral. I want to know if it is possible to access GPIOs from user space, and what are the different ways to do this? I was trying to access it using the u-boot functions that are in the "dg_gpio.c" but when i try to read/write to the configuration register (GPIO_OE, CONTROL_PADCONF_X ...) i get a segmentation fault error?

Thanks in advance for the answers.

  • 0
    Intellectual 420 points

    Yes, it is possible. I know this question is from months ago, but I recently was searching for a solution for the DM81xx EVM, and came up with one. You can check out my blog posts here for an outline of the solution.

    http://e2e.ti.com/support/embedded/linux/f/354/p/201675/719976.aspx#719976

    If you need more info, just let me know.

    Cheers