C GPIO

[MarkHaysHarris777]

hi, I just did some testing with Pine GPIO68 [ pin 32, GPIO12 ] ... 

... again, try using 0x44 in your C code ( the hex number for GPIO 68 ).  I verified that GPIO68 works well for IN | OUT , defaults to 0 , and drives standard LED brightly with the normal 330 ohm limiting resistor.  I have my LED plugged into the lab board at GPIO12, on pin(32); however, I'm driving the output with sysfs using Pine GPIO68 !

The following code is a bash script that will blink the Pine GPIO68 [ pin 32, GPIO12 ] line seven times:

Put the script in a file, chmod it with 0754, and run with sudo ./blink.sh

blink.sh

Code:

#!/bin/sh

echo 68  > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio68/direction

for i in `seq 1 7`
do
   echo 1 > /sys/class/gpio/gpio68/value
   sleep .35
   echo 0 > /sys/class/gpio/gpio68/value
   sleep .65
done

echo 68  > /sys/class/gpio/unexport

hope this helps you