We are using A206 carrier board and trying to interface sensors over UART (ttyTHS1 which is available on 40-pin header 8/10 pins) using python. Some how we are not seeing any data tx from ttyTHS1 to sensor board. We tried various other ways to test ttyTHS1 interface, only loopback (short of 8th and…

hello chennakeshavareddy.palla, it’s customize carrier board, please contact with vendor for further supports. BTW, with the steps as mentioned in comment #10 , ttyTHS1 can be access as normal UART port on DevKit

hello chennakeshavareddy.palla, this A206 should be a customer carrier board, right? it may not using ttyTHS1, please looking for registered software nodes for the mappings of serial ports, i.e. $ dmesg | grep THS

It is showing the THS1 & THS2 are available jetsongpu@ubuntu:~$ dmesg | grep THS [ 1.593949] 70006040.serial: ttyTHS1 at MMIO 0x70006040 (irq = 64, base_baud = 0) is a TEGRA_UART [ 1.594413] 70006200.serial: ttyTHS2 at MMIO 0x70006200 (irq = 65, base_baud = 0) is a TEGRA_UART jetsongpu@ubu…

If the A206 does not support THS1, please suggest the carrier board which has THS1 working.

A206 is by seed studio [image] A206 Carrier Board for Jetson Nano/Xavier NX/TX2 NX, with 4 USB, M.2 Key M,... The A206 carrier board has nearly the same design and function as NVIDIA® Jetson Xavier™ NX carrier board, and works well with Jetson Nano/ Xavier NX/ TX2 NX modules. This produ…

hello chennakeshavareddy.palla, there’re three UARTs available on Jetson Nano, you may see-also Jetson Nano Product Design Guide and please check [Figure 11-5. Jetson Nano UART Connections]. it’s DevKit that by default using pin-203/205 as serial console.

We also intended to use this UART routed to 40-pin header, specifically seeing issue with Tx.

looks like we have same issue as reported, but no conclusion found. [image] Jetson Nano UART TX Pin (Pin 8 J6 Header) corrupts characters Jetson Nano I agree, this is probably not happening in your case, but it is always good practice with any kind of data wiring to shield…

hello chennakeshavareddy.palla, it’s by default having debug console with pin-203/205, could you please check you’re able to setup a terminal and fetch the logs via serial port utility? such as picocom or minicom. furthermore, you may try have below steps to remove UART2 debug messages on Jetson-N…

Jetson nano has 3 UARTS, out of these one as standard DEBUG port (UART0/ttyS0/ttySG0), out of the remaining two UART1 routed to 40-pin header (pins 8,10, tx/rx ttyTHS1), UART2 routed to Button header(ttyTHS2). DEBUG UART is absolutely fine, do not want to disturb it. We wanted to use UART1.

[image] chennakeshavareddy.palla: UART1 routed to 40-pin header (pins 8,10, tx/rx ttyTHS1) hello chennakeshavareddy.palla, this is by default for serial port output logs, please follow above to disable that for normal usage.

UART ttyTHS1 not working as expected on A206 carrier board

Robotics & Edge Computing Jetson Systems Jetson Nano

JerryChang August 11, 2022, 5:26am 14

please see-also M.2 Uart (UART0) issues on XavierNX (custom carrier board), it sometimes be an issue with the setup of minicom, please modify the settings for customer board.

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UART ttyTHS1 not working as expected on A206 carrier board

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