Matt,

Take a look at
https://github.com/piranha32/IOoo/blob/master/doc/Beaglebone%20Black%20pin%20cheatsheet.ods
I compiled the spreadsheet for my own use, combining information from
several sources. It helped me a lot, I hope you will find it useful as well.

j.



On Sat, Feb 15, 2014 at 3:11 PM, matt <[email protected]> wrote:

> Hi Ralf,
>
> Thank you for clearing it up!
>
> Could you please explain how you deduced that *Logical Pin 48* is
> associated with *Physical Pin P8.37*? ( I do see in the table that P8.37
> = lcd_data8, just not sure how you deduced that their Logical Pin number is
> 48).
>
> Thank you.
>
>
> On Saturday, February 15, 2014 9:44:50 PM UTC+2, Ralf Roesch wrote:
>>
>> Matt,
>>
>> now it gets clearer.
>> You referred Pin 48 (cat pins), so I thought you checked against a new
>> pin with an other mode set.
>>
>> I think you mixed "GPIO pin" number with "logical pin" number.
>>
>> You are referring to P9.15 (= GPIO1_16 / gpmc_a0), which is Pin 48
>> But: Pin 48 is a GPIO pin number!
>> (each gpio group includes 32 pins, 48 is the sum of: 32 pins from group 0
>> + pin 16 of group 1)
>>
>> The associated logical pin for GPIO pin number 48 has number 16!
>> So if you "cat pins" as before you get the interesting entry:
>> pin 16 (44e10840) 00000027 pinctrl-single (mode 7)
>> BTW offset 840h conf_gpmc_a0 can be found in the SRM.
>>
>> Logical Pin 48 is associated Pin P8.37 / lcd_data8 as I mentioned before.
>>
>> regards
>> Ralf
>>
>>  --
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