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Re: [Paparazzi-devel] USB converter problem...

From: Pascal Brisset
Subject: Re: [Paparazzi-devel] USB converter problem...
Date: Sun, 02 Sep 2007 23:34:22 +0200
User-agent: Thunderbird (X11/20070824)


on which port do you plug your cable ?
- If it is a standard serial port, it's probably /dev/ttyS0 (or S1)
- If you use a USB converter, it's probably /dev/ttyUSB0 (you can see it in /var/log/syslog while you plug the converter)

The port is written in the load command in the Makefile, line 124. Change it if needed.

You also need some permissions: You have to be part of the 'dialout' group.
The "groups" command will give you the list of groups you are member:

address@hidden % groups
pascal adm dialout cdrom floppy audio dip video plugdev scanner netdev lpadmin powerdev admin

If you are not member of dialout, add it using the graphical interface (Administration -> Users)
or simply with the command

   sudo adduser <your login> dialout

It will be effective only on your next login or after the command

   newgrp dialout

Hope it helps


Alexis Lussier Desbiens wrote:

I am just done soldering all the part on a Classix paparazzi board. I
powered it with 5V, connected P0.14 to ground and RX from the AP chip
to TX of the computer and Tx from the AP chip to Rx from the computer
(with the TTL-232R-3V3 cable). I reset the board and then I download
the USB bootloader with "make upload_bl PROC=GENERIC" and I get this

Can't open COM-Port /dev/ttyUSB0

The only way I can get around is by plugging the USB cable just after
I type the make command and then I get a few :

ioctl get ok, status = 6
ioctl get ok, status = 6
ioctl get ok, status = 6
ioctl get ok, status = 4
ioctl get ok, status = 4
ioctl get ok, status = 0
ioctl get ok, status = 0
Synchronizing.ioctl get ok, status = 0

but it always end up with:

ioctl get failed

Any idea of what I am doing wrong? Should I program the FBW chip
first? It seems that the problem is in the USB converter...

Thanks for your help, I am anxious to try flying something with this board! :-)


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