[Arm-netbook] Specifics of EOMA gpio

[luke.leighton]

yep that's it.  add it to the a10 pcb page for now.

On Thu, Oct 10, 2013 at 2:39 PM, joem <joem at martindale-electric.co.uk> wrote:
> On Thu, 2013-10-10 at 13:16 +0100, luke.leighton wrote:
>> On Thu, Oct 10, 2013 at 1:13 PM, joem <joem at martindale-electric.co.uk> wrote:
>> > Hi Luke or anyone,
>> >
>> > Need to know specific commands to turn on/off EOMA gpio lines for some
>> > testing.
>>
>>  i just released an example script, it was my previous post (literally
>> the previous one), you need a sunxi 3.4 kernel to use it.  if you're
>> using 3.3 let me know, i have another alternative. the modules to load
>> are different in each case but search "GPIO" in the kernel config
>> you'll find them easily.
>
>
> OK I got kernel 3.4, and I found this script posted earlier:
>
> #!/bin/sh
>
> cd /sys/class/gpio
>
> echo 1 >export
> echo 2 >export
> echo 3 >export
> echo 4 >export
> echo 5 >export
> echo 6 >export
> echo 7 >export
> echo 8 >export
> echo out > gpio6_pf3/direction
> echo out > gpio5_pf2/direction
> echo 0 > gpio6_pf3/value
> echo 1 > gpio5_pf2/value
> sleep 1
> echo 0 > gpio5_pf2/value
>
>
> Found nothing of importance in kernel config.
>
> Then I find this in script.fex which maps gpio pin names to
> specific physical port pin:
>
>
> [gpio_para]
> gpio_used = 1
> gpio_num = 8
> gpio_pin_1 = port:PB02<0><default><default><default>
> gpio_pin_2 = port:PI03<0><default><default><default>
> gpio_pin_3 = port:PF00<0><default><default><default>
> gpio_pin_4 = port:PF01<0><default><default><default>
> gpio_pin_5 = port:PF02<0><default><default><default>
> gpio_pin_6 = port:PF03<0><default><default><default>
> gpio_pin_7 = port:PF04<0><default><default><default>
> gpio_pin_8 = port:PF05<0><default><default><default>
>
>
>
> Is that about right? There are only 8 gpio port pins available
> and they are PB02, PIO2, PF0..5?
>
>
>
> Example to turn bit pf2 on for 1 second is:
>
> #1. make available the GPIO pins
>
> cd /sys/class/gpio
> echo 1 >export
> echo 2 >export
> echo 3 >export
> echo 4 >export
> echo 5 >export
> echo 6 >export
> echo 7 >export
> echo 8 >export
>
> #2. Turn pf2 to output and turn on LED
> cd /sys/class/gpio
> echo "out" > gpio5_pf2/direction
> echo 1 > gpio5_pf2/value
>
> #3. Pause for 1 second and turn back to logic 0
> sleep 1
> echo 0 > gpio5_pf2/value
>
> #4. Read from pf3 and store into a file
> cd /sys/class/gpio
> echo "in" > gpio5_pf3/direction
> cat gpio5_pf3/value > ~/pf3_value.txt
>
>
> If all that is correct, create a web page and I update all the details.
>
>
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