RS485 serial communication for SAMA5D27-SOM1-EK1
Posted: Mon Jun 29, 2020 1:58 pm
I am using SAMA5D27-SOM1-EK1 board.
I am using Linux 4.14 kernel version build with Yocto project. I have build core-image-minimal distribution.
This is my board device-tree :
https://github.com/torvalds/linux/blob/ ... om1_ek.dts
I want to set up RS485 serial communication.
I do not want to use RTS Pin , jusr RX / TX / GND.
I want to know, in detailed steps :
how to do that ?
Which drivers must be build into my kernel for that ?
Which PINs I must use from my board ? ( I only need RX, TX, GND lines )
Which node in the device-tree is related to RS485 communication ?
Any modifications to do for the device-tree ?
Thank you.
I am using Linux 4.14 kernel version build with Yocto project. I have build core-image-minimal distribution.
This is my board device-tree :
https://github.com/torvalds/linux/blob/ ... om1_ek.dts
I want to set up RS485 serial communication.
I do not want to use RTS Pin , jusr RX / TX / GND.
I want to know, in detailed steps :
how to do that ?
Which drivers must be build into my kernel for that ?
Which PINs I must use from my board ? ( I only need RX, TX, GND lines )
Which node in the device-tree is related to RS485 communication ?
Any modifications to do for the device-tree ?
Thank you.