Part Number: 66AK2L06
Tool/software: Linux
Hello,
I'm trying to use GPIO4 on board 66AK2L06 EVMK2L.
So i searched about linux gpio control.
GPIO pin is in Expansion Connector on board 66AK2L06 EVMK2L.
I followed below :
1. entered in board using ssh
2. cd /sys/class/gpio
3. ech0 4 > export
# I will use gpio4
4. cd /sys/class/gpio/gpio4
5. echo out > /sys/class/gpio/gpio4/direction
# I will use gpio4 as output pin
6. echo 1> /sys/class/gpio/gpio4/value
#output value is high
7. echo 0> /sys/class/gpio/gpio4/value
#output value is low
so i want input 0 and 1 value to gpio4.
but, gpio4 is always high both 0 and 1.
How can I control gpio pin?
