On Thu, Sep 4, 2014 at 11:59 PM, TJF <[email protected]> wrote:
> Why do you think you'll need any cape?
>
> BBB has more then 15 free GPIOs and 7 analog inputs. You can simply build
Which are the 15 free GPIOs? After study of the schematic, I count these ten:
GPIO0_26 => '44e10'.'828', # CAUTION: USED ON BOARD. says schematic. BS
GPIO0_27 => '44e10'.'82c', # CAUTION: USED ON BOARD. says schematic. BS
GPIO1_12 => '44e10'.'830', # CAUTION: USED ON BOARD. says schematic. BS
GPIO1_13 => '44e10'.'834', # CAUTION: USED ON BOARD. says schematic. BS
GPIO1_14 => '44e10'.'838', # CAUTION: USED ON BOARD. says schematic. BS
GPIO1_15 => '44e10'.'83c', # CAUTION: USED ON BOARD. says schematic. BS
GPIO1_17 => '44e10'.'844',
GPIO1_29 => '44e10'.'87c',
GPIO2_1 => '44e10'.'88c',
GPIO3_19 => '44e10'.'9a4'
Every other signal labeled GPIO?_?? coming out of the processor is connected
to something besides a header. I guess you can use some of these (e.g. HDMI)
if you don't mind about slight loading and having to shut down all input
during boot to avoid boot pin problems.
Britton
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