[MinnowBoard] mraa minnoboard max GPIO pin mappings.

Kevron Rees tripzero.kev at gmail.com
Wed Feb 4 17:31:14 UTC 2015


On Feb 3, 2015 9:34 PM, "John "Warthog9" Hawley" <warthog9 at eaglescrag.net>
wrote:

> On February 3, 2015 6:35:26 PM PST, Kevron Rees <tripzero.kev at gmail.com>
> wrote:
>>
>> Going by this[1], it would seem that the 21 pin corresponds with GPIO on
>> pin 21 of the max.  However, when I run the following code, I get an error:
>> "ValueError: Invalid GPIO pin specified"
>>
>> #!/usr/bin/env python
>>
>> import mraa
>> import time
>>
>> led = mraa.Gpio(21)
>>
>> led.dir(mraa.DIR_OUT)
>>
>> while True:
>>         led.write(1)
>>         time.sleep(1)
>>         led.write(0)
>>         time.sleep(1)
>>
>> Can anyone tell me why my pin is invalid?
>>
>> [1] - http://iotdk.intel.com/docs/master/mraa/minnowmax.html
>>
>> ------------------------------
>>
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>> elinux-MinnowBoard at lists.elinux.org
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>>
>>
> Does your kernel have gpio support?
>

I believe so.  I have stuff in /sys/class/gpio and have been able to toggle
different IOs on and off using the command line (echo "FTW")
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