FTDI-debugging with Notecarrier B v2

Hardware Notecarrier B
1

Hi,

I am having trouble getting FTDI-debugging working with the new Notecarrier B. I have had this work before with the green version. I connect AUXEN to VIN og VIO, AUX-RX/TX as described in the tutorial. And the black FTDI cable to one of the GND pins on the notecarrier B.

I get a /dev/ttyUSB0 on Ubuntu Jammy which I use with picocom at baudrate 115200, but no output and no response when typing trace. This works well when I use a USB to the Notecarrier B with picocom and /dev/ttyACM0.

Regards, Gaute

2

Hi @gauteh,

I just tried using my FTDI cable with the new Notecarrier-B, and all works fine. Following these instructions, I bridged AUXEN to VUSB and VIO and both worked fine.

I’m not quite sure what the issue could be (unless there is a mistake in your wiring?), but do you have another Notecarrier-B you could try?

Rob

3

Thanks for checking, I’ll try another one as well. Could there be any missing setup with the FTDI driver on Ubuntu?

( I’ve quadruple-checked the wiring, and inverted RX/TX just for good measure as well… )

4

Hi @gauteh!

Great to see your name again!

I just so happen to be setting up a brand new Linux machine with Ubuntu 22.04 today. I’ll give it a check and see if I run into the same issue.

5

Hi Zach! Great to hear from you as well! Thanks!

I’m tuning power use, down to 40 mW on average (including syncs and GPS) with continuous logging and an ahrs algorithm.

1 Like
6

Hello Gauteh,

I finally got to test my new Ubuntu 22.04 laptop (fresh install) with this FTDI cable, and it just worked, with no additional drivers. I hooked a battery to the Notecarrier B and used the pinout shown in the table below:

FTDI CARR-B
YLW AUXTX
ORG AUXRX
BLK GND
– AUXEN
– VIO

I hooked the Notecarrier B pins AUXEN and VIO together, directly.

Once everything is connected, don’t forget to issue the {"req":"card.trace","mode":"on"} command to see logs.

Check out this related topic for more information: