How to setup UART 100000 bit/s baudrate on Jetson xavier NX for communication with SBUS receiver?

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Hello，
I am trying to use jetson Xavier NX
I need to setup /dev/ttyTHS0 100000 bit/s baudrate and 8E2 mode to make sure sbus receiver could work, but i dont know how to do that.

3

hello victorj171 ,

may I know what’s your hardware pin connections,
Xavier series by default used combined-uart, and its baudrate settings is configured as 115200/8n1.
please also share kernel logs with… $ dmesg | grep THS to check which serial port you’re using,
thanks

4

hi JerryChang,
my hardware pin is J12 Expansion Header Pin #10 UART1_RXD

$dmesg | grep THS
[1.486030] 3100000.serial: ttyTHS0 at MMIO 0x3100000 (irq =47,base_baud =0) is a TEGRA_UART

5

hello victorj171,

there’s hardware to convert the signal from UART to SBUS.
please see-also https://www.aliexpress.com/item/1005001903787023.html, and https://www.aliexpress.com/item/1005003157011491.html

on Xavier NX side, you may see-also [Jetson Xavier NX] UART Tune - #15 by JerryChang to disable combined uart.

7

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