I’m trying to communicate with a GRBL CNC Control Board via the GPIO Pins. I managed to establish communication on a Jetson Xavier NX, via the /dev/ttyTHS0 port, after disabling nvgetty: $ systemctl stop nvgetty $ systemctl disable nvgetty $ udevadm trigger $ sudo reboot now Unfortunately, I’m un…

Replies on this topic: [image] Unreliable serial communcation via the UART TX/RX GPIO Pins Jetson Xavier NX It’s been over three weeks and I’m still unable to make a simple and stable Serial communication via UART TX/RX work between an Arduino and the Jetson Developer Kits…

hello yurikleb, FYI, the default baudrate is 115200/8n1. may I know which pin you’d connected to for gathering serial data. thanks

Hello Jerry, I can confirm the baud-rate setting in minicom is 115200/8n1. I just did another experiment with an Arduino Uno flashed with GRBL on it. When connected via USB to the Jetson Nano, it shows up on /dev/ttyACM0 and the serial communication (via minicom and the Arduino IDE serial monito…

hello yurikleb, could you please have a try to Disable Console over UART of the Nano platform. thanks

Hey Jerry, where can I find the p3448-0000.conf file? to remove the specification console=ttyS0 Does it mean I need to re-build the kernel? I’m sorry I’m new to the Jetson platform. Thanks!

hello yurikleb, it’ll save to your local machine if you’re install the JetPack release image with SDKManger. there’s default path, for example, ~/nvidia/nvidia_sdk/JetPack_4.4_Linux_JETSON_NANO_DEVKIT/Linux_for_Tegra/

Hey @JerryChang . I’m slightly confused about the SDK manager. When downloading the SDK Manager from this page I’m getting an AMD64.deb file which I’m unable to run on the NVIDIA Jetson Nano kit as its arm64 based. Origainnaly, I used the “SD card method” as described here . Do I still need to inst…

hello yurikleb, please refer to NVIDIA SDK Manager page for [System Requirements]. you’ll need a host machine to install JetPack release via SDKManager. SD card image did not contain the board configuration files, i.e. p3448-0000.conf please also download the image to your local machine for that…

Hey Jerry, Thanks for your help, and sorry for all the confusing questions. I have installed Ubuntu 18 on a Host machine and the SDK manager. I’m now downloading the software as described here in step 3.2 . At which step and on which machine should I update the p3448-0000.conf file? On the Host…

Hello Jerry, I finished downloading the all the files required via the SDK manager. In step 2 (Details and License) I clicked the “Download Now, Install Later” checkbox. After the download was complete I found the p3448-0000.conf.common file on the Host machine in the folder which I set as the do…

GPIO UART serial communication scrambled data

Robotics & Edge Computing Jetson Systems Jetson Nano

yurikleb October 21, 2020, 10:46am 5

Seems like a similar problem is discussed here

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GPIO UART serial communication scrambled data

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