Hey!
I would like to use the M4 CPU to communicate via oneWire with an temperature sensor.
Problem is that i don’t know how to configure a GPIO pin bidirectional so that I can read and write on and from the pin. The pin that I would like to use is the SODIMM 45 pin.
Therefore I ask you how to configure that?
Thanks in advance 
Hello Zimart,
use w1-gpio in the device tree.
here is some information how to do it.
https://linux-sunxi.org/1-Wire
the driver for driver for fsl-imx:
http://git.toradex.com/cgit/linux-toradex.git/tree/Documentation/devicetree/bindings/w1/fsl-imx-owire.txt?h=toradex_5.4-2.1.x-imx
and the GPIO onewire binding:
http://git.toradex.com/cgit/linux-toradex.git/tree/Documentation/devicetree/bindings/w1/w1-gpio.txt?h=toradex_5.4-2.1.x-imx
http://git.toradex.com/cgit/linux-toradex.git/tree/Documentation/devicetree/bindings/w1/w1.txt?h=toradex_5.4-2.1.x-imx
Best Regards,
Matthias