RTEMS on Beaglebone Black

[Angelo Fraietta]

I wonder if having the sdcard in is affecting the eMMC, and thus those pins
connected to it?

On Wed, Jul 29, 2015 at 3:42 PM, Mr. Andrei Chichak <groups at chichak.ca>
wrote:

>
> On 2015-July-28, at 23:31, Angelo Fraietta <
> newsgroups at smartcontroller.com.au> wrote:
>
> I just tried writing to the pins using the methods in the interrupt example
>
> What is very strange is that pin P9-15 toggles whether I write to GPIO1_16
> or GPIO2_0, which may be why the read is not correct on it
>
> So in short,
> I found that GPIO1_0 to GPIO1_3 did not read or write
> I found that GPIO1_30 and GPIO1_31 did not read or write
>
>
> All routed to the eMMC chip U13. It is strange that GPIO1_4 through 7
> work, perhaps the eMMC has been programmed in 4-bit mode.
>
> I found that GPIO0_4 and GPIO0_5 did not read or write
>
> Connected to I2C board id chip U7
>
>
> P9-15 writes whether writing to GPIO1_16 or GPIO2_0
>
>
> Yes, this makes sense. According to the schematics, 1_16 and 2_0 are
> wire-or-ed together with R160 and R161 and routed to P9-15.
>
>
> A
>
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