[SOLVED] GPIO cannot work on up-board squared
I'm trying to use GPIO pins on up2 to control an LED. I used the following code:
echo 432 > /sys/class/gpio/export
echo "out" > /sys/class/gpio/gpio432/direction
echo 1 > /sys/class/gpio/gpio432/value
The value has been set to 1 correctly, but the LED is not on.
I tried with mraa-gpio too, and with
mraa-gpio list shows
I tried to install the kernel for up-board according to https://wiki.up-community.org/Ubuntu#Install_Ubuntu_kernel_for_UP_from_PPA. But when I type
uname -a, it always shows
Linux upboard-UP-APL01 4.14.20-041420-generic #201802162247 SMP Fri Feb 16 22:48:07 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux.
Is there anyone who knows how to solve this problem? Thanks