I am trying to communicate with PC using USB-RS485 connector. I opened sudo minicom -D /dev/ttyTHS1 but there is nothing I can send or receive on either PC or jetson. I have performed the following Solution but no Avail. Kindly if possible clear my understanding what did i do wrong. #checked the d…

hello zawarkhan97, pin state will resume once you leaving gpioset. you should searching mb1-bct from your host machine.

hello zawarkhan97, would you like to access to the serial console? please refer to Jetson Orin Nano Developer Kit Carrier Board Specification , you may check [Table 3-4. Button Header Description – J14] for using pin-3/4 to access to the target for debugging.

Thanks for the prompt response @JerryChang . I actually want use RS485 ttyTHS1 for sending commands

hello zawarkhan97, could you please also share your hardware connection, or, taking a snapshot for quick checking.

The problem is I unable to see the output in another GPIO as well not only RS485 (PZ.05) but also on GPIO(PX.06). let me share the hardware connection diagram…RS485 A is with A and Rs485 Differential B is with B. [WhatsApp Image 2025-01-08 at 3.01.05 PM]

zawarkhan97 32m I applied the Patch and rebuilt the kernel But it seems to be not working. I have cooler on that pin and it once turned on doesnt turn off. sudo gpioset -m wait ''gpiofind “PZ.05”=1 sudo gpioset -m wait ''gpiofind “PZ.05”=0 I guess it takes time to take effect

Sorry edit : reset doesnt work i want to toggle it. But once its set to 1 it doesnt set to 0 then. Further on reboot the Gpio infor shows it as input

waiting for response @JerryChang …Help would be appreciated [image]

is there a method to change the pinmux dtb after flashing. I wasnt able to find this dtb in any folder tegra234-mb1-bct-pinmux-p3767-dp-a03

hello zawarkhan97, >> Q1 you’ll need to add wait to keep the pin state, for instance, # gpioset --mode=wait gpiochip0 135=1. >> Q2 did you searching on the target? you should see this from the Jetpack installation path. for instance, $OUT/Linux_for_Tegra/bootloader/generic/BCT/tegra234-mb1-bc…

RS485 no Communication on Jetson Orin Nx Custom Carrier Board

Robotics & Edge Computing Jetson Systems Jetson Orin Nano

JerryChang January 9, 2025, 8:55am 7

please refer to Topic 301171, there’s patch to address the issue cannot control GPIO in JP-6.

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RS485 no Communication on Jetson Orin Nx Custom Carrier Board

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