Author Topic: Bought used preenfm2, usb not working properly  (Read 172 times)

bhead

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Bought used preenfm2, usb not working properly
« on: May 27, 2017, 09:29:51 PM »
Hi everyone,

since I am no expert in assembling DIY kits I bought one used preenfm2.
I tried under MacOSX and Linux to attach it as an USB Mass storage device by pressing a key on boot and then pressing ENG but I do not see usb devices appearing.
Midi also doesn't work (I don't see the device), however the midi setting is set on Midi In/Out
So, the device is powered on but I cannot communicate with it via USB (midi or usb storage)

Do you think it is an hardware problem?

Firmware is 1.06
Bootloader is 1.11

Thanks in advance!

Cheers

Xavier

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Re: Bought used preenfm2, usb not working properly
« Reply #1 on: May 28, 2017, 05:57:53 PM »
Hi,

What CPU board do you have? preenF405 or CERB40 ?
What is your PCB revision  ?

I would say you have a CERB40 with a faulty internal USB cable or without cable at all.
For more information about this cable, search for CERB40 in this page :
http://ixox.fr/preenfm2/build-it/the-pcb/

Best,

Xavier

bhead

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Re: Bought used preenfm2, usb not working properly
« Reply #2 on: May 29, 2017, 08:37:06 PM »
Thanks for the tips Xavier. I will try to follow your tips and let you know. I do not know what CPU board I have and also the PCB revision! :) How can I discover? thanks and sorry for the "newbiness" ;)

Xavier

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Re: Bought used preenfm2, usb not working properly
« Reply #3 on: May 29, 2017, 08:42:38 PM »
Thanks for the tips Xavier. I will try to follow your tips and let you know. I do not know what CPU board I have and also the PCB revision! :) How can I discover? thanks and sorry for the "newbiness" ;)

Can you attach a picture of the whole PCB ?

The PCB revision is written on it : something like "R5d ".

For the CPU board this is the preenF405 :
http://ixox.fr/shop/img/p/30-70-thickbox.jpg
And this is the CERB40 :
http://shop.microframework.eu/Images/ProductOut/Thumb256/6575/0.jpg

And don't forget to upgrade your firmware. 2.07 is the latest revision and your preenfm2 will be much more powerfull with it than it is today with the 1.06.
http://ixox.fr/preenfm2/manual/upgrade-firmware/

Xavier