Messages

1456

preenfm2 and preenfm3 / Re: using preenFM2 w/o usb stick?

« on: June 14, 2015, 10:38:48 PM »

Hi Ub,

The bootloader won't check any USB stick unless you press a key and select one option that requires a USB key.
So it's not a requirement to modify it.

For the firmware, I tried to isolate everything in USBKey.cpp/h, but it's likely you'll also have to modify Storage.cpp/h.

What would you want to use instead ?

Xavier

1457

preenfm2 and preenfm3 / Re: A messy bank with this and that...

« on: May 28, 2015, 09:27:19 PM »

Thanks Clément for this update. Yes keep on sharing, don't hesitate.

I'm trying to restock a little the prennfm shop so the forum should be a little more alive in the next few months.

1458

PreenFM1 (the blue one) / Re: Firmware 2.00

« on: May 26, 2015, 04:05:55 PM »

Sorry for the trouble, i just create a new stick thread with new URL:
https://www.dropbox.com/sh/cbik12uenwgdu2r/AAAYsHc7PFqA51J4S2D9tzaKa?dl=0

Xavier

1459

PreenFM1 (the blue one) / New download place

« on: May 26, 2015, 04:05:12 PM »

Hello,

The latest preenfm1 firmware and editor were not downloadable for some time, sorry about that.
Here is a link where you should be able to find them :
https://www.dropbox.com/sh/cbik12uenwgdu2r/AAAYsHc7PFqA51J4S2D9tzaKa?dl=0

Let me know if you find any problem or need something else,
Best,

Xavier

1460

preenfm2 and preenfm3 / Re: The oled screen need trimmer resistor to adjust the lighting ???

« on: April 22, 2015, 05:40:44 PM »

When "upgrading" from LCD to OLED, you don't need to change anything... You just have to plug your new display.

LCDs require a limiting resistor + variable R for contrast, the OLED will simply ignore them.

Xavier

1461

preenfm2 and preenfm3 / Re: USB Driver on Windows 7

« on: April 14, 2015, 06:16:25 PM »

Thanks for the update.

1462

preenfm2 and preenfm3 / Re: New member :)

« on: April 14, 2015, 06:14:51 PM »

Nice !
Welcome on board....
Pictures, videos, sounds, banks, music are also welcome.

1463

preenfm2 and preenfm3 / Re: i would absolutely love a metal case...

« on: April 11, 2015, 05:36:51 PM »

No, they won't be available from the official shop.
But i'll add a link to Ardi's shop, so that people can find it easily.

Xavier

1464

preenfm2 and preenfm3 / Re: cerb40 flashing

« on: April 07, 2015, 05:33:22 PM »

ok seems like nonsense on the screen now.  its never the same.

This happens when there are soldering problems with the screen.
Check the soldering points on your 16 pins header on the PCB and on the header on the OLED.

1465

preenfm2 and preenfm3 / Re: cerb40 flashing

« on: April 07, 2015, 10:08:24 AM »

Just noticed that... Those 2 pins are not connected ? Right ?
(They must not).

1466

preenfm2 and preenfm3 / Re: cerb40 flashing

« on: April 07, 2015, 10:04:32 AM »

You flash the firmware and bootlader from your computer to the CERB40... the USB drive has nothing to do at this point. The USB drive can be accessed by the CERB40 when the bootloader and firmware are flashed.

when i run "dfu-util -a0 -d 0x0483:0xdf11 -D p2_boot_1.10.bin -R -s 0x8000000" it says "could not open file p2_boot_1.10.bin for reading:  No such file or directory"  is this because the cerb40 cant find the thumb drive?

OK... here your computer (which runs the dfu-util command) cannot find the bootloader you're trying to flash.
I assume you downloaded a zip file... "pfm2_1.06.zip" ?
Where is it ? in your "Download" folder ? You have to unzip it...

Here is an exemple of command list you should enter :
> cd
> cd Downloads
> unzip pfm2_1.06.zip
> cd build
> ls p2_boot_1.11.bin
[Check you don't have error and that your bootloader is in the current directory]
> dfu-util -a0 -d 0x0483:0xdf11 -D p2_boot_1.11.bin -s 0x8000000
.....
> dfu-util -a0 -d 0x0483:0xdf11 -D p2_106o.bin -s 0x8040000
.....


Once both booloader and firmware are flashed.. Unplug the preenfm2, remove JM3 and plug it back.
You screen should not be black anymore.

Let me know,

Xavier

1467

preenfm2 and preenfm3 / Re: cerb40 flashing

« on: April 06, 2015, 09:04:23 PM »

Hi,

Please try to make it clear... you're hard to follow . 
You read this page right ?
http://ixox.fr/preenfm2/build-it/burn-firmware/
Looks like dfu-util moved to http://dfu-util.sourceforge.net/
I just updated the page with correct links.

ok i got dfu-util and command line utils from apple installed.  im stumped.  i think im supposed to have a directory on the thumb drive called pfm2 with the bootloader and firmware in it and when i try to CD over to that folder it says no such directory. 

OK so you flashed it with the dfu-util command ? 
Did 'dfu-util -l' list any device ?
Did the dfu-util show a progress bar while flashing ?
You flashed both firmware and bootlader ?

i can also hook up USB to the cerb40 and flash directly right?  how do i do that?  i need it spelled out my apologies but i just dont ever do this or anything remotely similar...  the instructions are like french to me.  no pun intended.  well ok pun intended  .  i only speak english

When flashing the CERB40 for the first time, you don't have any choice.
Put on JMP3 and plug the CERB40 directly to your computer with a mini-USB cable....

when i plugged the unit into my xp machine it wanted a driver so that means it works right?

I would say that's rather a good sign.

also, when i plug usb or 9v power into the unit and the jmp3 is not closed, the LED lights light up dimly.  is this a bad sign?  the screen has never come on once yet.  i wish there was another indication that something was working.

Yes if it makes some sounds, it works 
Do you hear a small pop when switching on ?
Any picture of your PCB both side, to see if anything is OK with the Display.... What display do you use ?

Xavier

1468

preenfm2 and preenfm3 / Re: USB Driver on Windows 7

« on: April 06, 2015, 08:48:07 PM »

Hi,

Weird... never heard of this problem.
Can you try to go in the device property (right click + properties + drivers), and to try to chose another driver...
Don't know exactly but you can try to update and select a different one if i remember correctly...

Xavier

1469

preenfm2 and preenfm3 / Re: New build - couple of useage questions

« on: April 04, 2015, 04:25:43 PM »

Hi,

Thanks for your feedback. 

1. Yes it works when you plug an headphone directly in the audio output... Output impedance of each prenfm2 audio output is 68 Ohm.
It has not been designed to behave as a headset amplifier, but in some situation that can be usefull.

2. No. That would require a OTG Usb driver which is quite complicated 

Xavier

1470

preenfm2 and preenfm3 / Re: Troubleshooting sudden display bug

« on: February 27, 2015, 12:20:37 AM »

Yep, you should try checking the OLED connector soldering points.