- LINUX MINICOM HOWTO SERIAL
- LINUX MINICOM HOWTO SOFTWARE
- LINUX MINICOM HOWTO CODE
- LINUX MINICOM HOWTO PC
For some boards, armbian implements an USB gadget mode (a 'fake' serial console over microUSB) describen below. This short tutorial should give you an introduction how this works. When SSH/Display access isn't possible access to console via UART is the best way to get a clue where your SBC hangs. This setup works well on the Raspberry Pi as described in the OP (following those instructions).Access to a console can be mandatory when you SBC doesn't work as expected (e.g Network or HDMI output doesn't work). This time I did not disable or change any of the default OS nvgetty service settings Here is a sample output: Welcome to minicom 2.7.1 When the Arduino is connected via usb (/dev/ttyACM0) to the Jetson, communication works very well.
The Arduino is running a simple serial test code which prints “hello!” when the arduino boots, and echos back any data sent to the Arduino. On the Xavier the data comes in correct but I’m unable to send anything to the Arduino.
On the Nano: Corrupt data comes in from the Arduino, when sending data the reposne comes back also scrambled.Įxample: I receivZCCáI receivëë5¹½nI receiv/ÝI receiv ¤Hø. Connect power to the Arduino (I tried powering the Arduino via external Power Supply, via USB and via the Jetson 5V GPIO pins ). On the Xavier NX: Serial Device: /dev/ttyTHS0, Baud: 115200 8N1, HW+SW Flow Controll: off On the Nano: Serial Device: /dev/ttyTHS1, Baud: 115200 8N1, HW+SW Flow Controll: off Connect an Arduino to the Jetson via 3 Jumper cables - GND, TX, RX. Found tegra_fbmem: All is going well so far :) To restore this content, you can run the 'unminimize' command.ĭocuments sktop Pictures dmesg Not required on a system that users do not log into. This system has been minimized by removing packages and content that are As the Jetson system boots up I see coherent data in the Serial Monitor on my local machine and able to communicate with the Jetson Dev kit (both the Nano and the Xavier NX). Open a serial monitor on my local machine, with the following settings Port: /dev/ttyUSB0 Baud: 115200. Connect the FTDI chip to my local machine via USB cable. Connect Pins 6,8,10 on the Jetson to an FTDI chip (jumper on 3v logic). Turn on the Dev Kit and go thru the initial Ubuntu OS setup,. Insert the SD card into the Jetson Dev Kit. Downloaded an SD Image file from here to my local machine (Dell XPS 13, Ubuntu 20.04). Hey are my steps for both the Jetson Nano and the Xavier NX Develper Kits: from which console did you disable getty and then you connected UART on 40-pin? or what exactly are the steps? Also, can you try by not disabling any getty service? OF: reserved mem: initialized node iram-carveout, compatible you please share your steps in detail once what exactly you have done after flash?įor ex. OF: reserved mem: initialized node vpr-carveout, compatible idit OF: fdt:Reserved memory: failed to reserve memory for node 'fbaB From minicom of ttyUSB0, I could see data coming fine. After system boots, login prompt shows up on ttyUSB0 as I have connected FTDI chip from UART of 4o-pin Nano to my local PC USB. I flashed the device and connected UART on TX/RX pins of 40-pin header Nano.
You do not need any pinmuxing or any other software change to make it work.
Similar setup works perfectly on a Raspberry Pi.įor me, UART TX/RX on 40-pins are working fine. When connecting the Arduino via USB the serial communication works well on both kits. As mentioned the same setup still (almost) works on the Jetson Nano, the data goes both ways but is scrambled. I don’t think its a hardware issue as I tested it with a new kit which I got today. So my guess is something is wrong with the TX pin (GPIO pin 8)? I’m still getting inbound data from the Arduino, but unable to send anything to the Arduino. 26th) things stopped working on the Xavier NX as well. I then tried to replicate the same setup on the Jetson Nano (as we will need multiple boards for our research) but the serial data is scrambled / corrupt ( still trying to solve it here).Ī few days ago (Monday, Oct. Initially, I managed to make things work on the Jetson Xavier NX, on port /dev/ttyTHS0 via GPIO pins 8,10.Īfter disabling nvgetty everything seemed to work well. 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 (Xavier NX or the Nano).
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