STM32F4. Internal converter USB-COM problem.

[espruino-discuss]

Posted at 2014-07-15 by user7265

Hi, Gordon, Hi all!
It's me again.
I have some question to community.
STM323F4 includes USB-COM to connect with PC.
But I did not get to use this feature.
Now I'm use external USB-COM converter.
Converter connected to pins {rx:A3,tx:A2}.

My working code:

Serial2.setup(9600, {rx:A3,tx:A2});

Tried to use:

USB.setup(9600);       

and

USB.setup(9600, {dm:A11,dp:A12});

Can I use internal converter? How can I do this?

[gfwilliams]

Posted at 2014-07-15 by @gfwilliams

You just plug into the second USB connector - no extra code should be required (but you do still need to provide power via the first connector).

There was a bit of info on setting up other boards such as the F4 here: http://www.espruino.com/Other+Boards

[espruino-discuss]

Posted at 2014-07-15 by user7265

Two USB ports connected to board, but doesn't work.

[gfwilliams]

Posted at 2014-07-15 by @gfwilliams

You've definitely got the 'original' F407 discovery board, and not the F401? Have you tried a different USB cable?

Maybe it's just that you need the drivers for it? But this is why we have the Espruino board - when there's one bit of hardware it's significantly easier to support it :)

[espruino-discuss]

Posted at 2014-07-18 by user7265

I like to think that it is the original F407 :)