[MinnowBoard] GPIO mapping

[Hay Nguonly]

Bill, thanks for that quick reply.

Yes, that¹s where I got my example from, but I would like to know how that
GPIO number is derived?
Is it just arbitrary picked by someone, or there is a formula for it.

Thanks
Hay




On 9/11/15, 4:40 AM, "elinux-MinnowBoard on behalf of Bill Traynor"
<elinux-minnowboard-bounces at lists.elinux.org on behalf of
btraynor at gmail.com> wrote:

>On Fri, Sep 11, 2015 at 7:19 AM, Hay Nguonly <HNguonly at ixiacom.com> wrote:
>> Hi,
>>
>> Could someone please tell me how the GPIO mapping works?
>> For example pin 21 of the Low Speed header is mapped to GPIO 82 for
>>Linux
>> 3.17, or 338 for Linux 3.18, but the pin name on the CPU is called
>> GPIO_S5_0.
>> Where can I find that cross reference, or algorithm for that GPIO
>>mapping?
>
>There's this: http://www.elinux.org/Minnowboard:MinnowMax#GPIO_Mapping
>
>>
>> Thanks
>> Hay
>>
>>
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>>
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