NanoPi 2 GPIO pin mappings

Hussam

2015-12-25 07:12:52

I was wondering how are the nanoPI2 physical GPIO pins mapped into SYSFS.
For example which SYSFS 'gpioxx' value would correspond to the physical
GPIOB29?

jjm

2015-12-25 08:48:33

hello&#65292;
     If  you  want to use NanoPi 2 physical GPIO pins , you  can refer to
the following steps:

# cd /sys/class/gpio  

# for i in gpiochip* ; do  echo `cat $i/label`: `cat $i/base` ; done   

nxp-gpio.0:0

nxp-gpio.4:128

nxp-gpio.5:160

nxp-gpio.1:32

nxp-gpio.2:64

nxp-gpio.3:96

Actually the gpio.0 express GPIOA, gpio.1 express GPIOB...

For example , if you want to use GPIOB30 of NanoPi 2 , we can use the GPIO
such as :64 + 30 = 94.

jhlim

2016-01-15 00:50:44

Hi,

if you want gpio port,

fisrt 

echo 94 > /sys/class/gpio/export

then 

you can see new gpio94 device

have a good time