beaglev-ahead/debug.md

Debug port

To debug the board we have two options,

1. UART
2. JTAG

Below are the details on how to use these interfaces.

UART debug port

With v0.2 (DVT) of BeagleV Ahead board you have BeagleBone Black style header pins but due to some unknown reason it's not compatible with the usual FTDI debug cable like this. To make the connection, you can use FTDI module like this to only make the connections listed below:

1. Connect TXD pin of FTDI module to RX pin of BeagleV Ahead.
2. Connect RXD pin of FTDI module to TX pin of BeagleV Ahead.
3. Connect GND pin of FTDI module to GND pin of BeagleV Ahead.

After making the connections, you can use serial communication tools like tio to see the boot log and get access to the shell. Using tio is very simple, you just have to know the serial port of the FTDI module. To identify the serial port of your FTDI module you can see this simple guide. Now execute the command below to make the connection:

[lorforlinux@fedora ~] $ tio /dev/ttyUSB0

I am using Linux and serial port for my FTDI module is thus I used /dev/ttyUSB0 as port name you may have different name so please update the command accordingly.

JTAG