[MinnowBoard] Echo to MinnowBoardMax GPIO export fails

[Michael Jones]

Martin,

Very helpful, thanks. I had to think a bit to understand the base of 82 and 154.

For others:

For 8x, Code GPIO# = 338 + Linux GPIO# (Chart) - 82
For 2x, Code GPIO# = 410 + Linux GPIO# (Chart) - 154

So for the two examples:

338 + 84 - 82 = 340

and

410 + 208 - 154 = 464

I’ll give this a try later this week. 

Are there any proper ways to expose the /sys paths for user mode like one can do for /dev/ttyN? Or do people just run their code as root?

Mike


On Jan 5, 2015, at 7:29 AM, Martin Oldfield <elinux-mbmx-2014-11 at mjoldfield.com> wrote:

> I've also found wildly different GPIO numbers on my Minnowboard Max.
> 
> You can read about it at
> http://www.mjoldfield.com/atelier/2014/12/mbmx-gpio.html.
> 
> 
> 
> --
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