update firmware in linux on Expansion Board v3
I try to update the V3 Exp Board on Linux .
I installed dfu-util
I made the following :
- Disconnect the USB cable
- Hold down the S1 button on the shield
- Connect the USB cable
- Keep the S1 button pressed for at least one second
- Release the button. When the board is connected in DFU-mode, it will be in this state for 7 seconds.
If you enter for list:
$> dfu-util -l
you get :
Found Runtime: [04d8:ef99] devnum=0, cfg=1, intf=0, alt=0, name="UNDEFINED"
So I enter the command:
$>dfu-util -D ./expansion3_0.0.9.dfu
and I get as answer :
"Cannot open device
Opening DFU USB device... "
and nothing else but the prompt: $
Do I make it correct ? How do I know that it is correct or not?
Is there a mistake ?
@prx Did you give r+w access to the serial devices for the current user?
On most Linux systems this is done using
sudo usermod -a -G dialout $USER(you'll need to logout and/or reboot for the change to become effective).
@prx try sudo