The debug log that is generated during the Linux startup of the Jetson. It contains a lot of useful information to resolve problems such as problematic devicetree changes. The debug interface provided by the Jetson also give the possibillity to access to a headless system, in case your carrierboard does not support HDMI/DisplayPort output.
| Version | Changes |
|---|---|
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This guide describes the procedure to get access to the debug logs
The following tools are required to get access to the debug logs:
Linux based host system with minicom installed
use sudo apt-get install minicom to install
USB to UART adapter
UART cable to connect to the carrierboard
At first you have to connect your UART cable to the Jetson the following way
| Signal Jetson | Signal UART adapter | note |
|---|---|---|
| Carrierboard | Connection |
|---|---|
Now connect the cable to the USB to UART adapter und connect the USB to your Computer
The following steps have to be done on your linux host system
In case you do not have Minicom already installed use the following command to install it:
The following command makes sure that the USB to UART adapter is properly recognized by the linux system.
Please check your hardware connection to the USB to UART adapter, If the command does not print ttyUSB0 back to the terminal.
Now everything is set up get the debug logs, you just have to start minicom with the following parameters:
Your terminal should now look like something like this
Now connect your Jetson to the powersupply and start it properly. The minicom terminal should print a lot of messages during the boot of the Jetson system ending with a login window to the Linux system.
1.0
Internal release
1.1
Release
VCC
VCC
its not recommended to connect this cable. The UART device (in this case the Jetson) should be powered externally
RX
TX
TX
RX
GRD
GRD
