Messages

1

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: July 01, 2022, 05:20:05 PM »

As DfuSe seems to work for you, i'll create a file for it with latest bootlader/firmware later today. That can be usefull.

Great, thanks for that.

If you want to give another try yourself, only flash the pfm3 bootloader (p3_boot_1_09.bin) at 0x08000000 with webdfu on your Mac.

Then you should be able to boot in the pfm3 bootloader by pressing MENU while turning on.
From the pfm3 bootloader, you can easily flash the firmware (p3_0_110) that must be copied on the SD Card. Just read the screen instruction.

Well, what do you know... it worked! Using address 0x08000000 instead of the default one seems to have done the trick, although webdfu still returned an error message at the end of the flash. After that, I was able to enter the pfm3 bootloader with the MENU button and flash the 110 firmware onboard... phew!

Thanks a lot for your support. Can be tagged as [SOLVED].

2

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: July 01, 2022, 10:45:04 AM »

Using DfuSe on my Win10 laptop (on which I've intalled the dreaded STM USB driver) does allow me to revert back to 0.90 and recover the initial failed state (everything works except control board).

Situation:

on the PC

• DfuSe: error-free but there's no *.dfu file with the latest bootloader/firmware available
• webdfu: will not connect to the device (I guess because of the evil STM driver?)

on the Mac (10.15.7)

• DfuSe: I don't find a Mac version
• webdfu: gives errors and "bricks" the device

3

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: July 01, 2022, 10:04:36 AM »

Having no joy.

Used webdfu on latest Chrome to flash:

• p3_boot_1_09.bin
• p3_0_110.bin

I get this error (see image) when uploading both files. Tried with two cables.

Now the display remains black. No blue LED activity. Unsurprisingly, bootloader doesn't display when I press MENU on boot. 

NOTE: I had initially flashed 0.90 using the link in the DfuSe section of this page. Trying to flash it again to revert to the previous state (when display was turning on) gives the same error in webdfu and results in the same situation.

I hear this is unbrickable. Let's see how much it actually is, because it very much looks like a block of terra cotta right now.

4

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 30, 2022, 11:40:57 PM »

What firmware version did you flash ?

Can't tell for sure right now but pretty sure it wasn't the one you give here. I just used the link from VanDaal's instructions. So this must be the culprit. I'll let you know tomorrow night.

SDCard error is something different

I thought so but when you're groping in the dark, anything looks important...

Boot/DFU jumper on boots to System (STM32) bootloader.
Pressing the menu buton enteres the preenfm3 bootloader (which looks different from the firmware). It's written boot loader at the top.

Thanks for this and the rest of the extra info.

5

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 30, 2022, 08:55:12 PM »

I do get MIDI indicator AND sound output when the firmware screen is on and I send MIDI note messages.

I cannot enter the bootloader by pressing MENU when powering. I’ve tried with the Boot/DFU jumper on and off. The MENU keypress looks simply ignored. What is the bootloader supposed to look like?

Continuity/interruption of buttons is as expected.

New thing: since I’ve tried the MENU button thing, I get an « SD CARD ERROR » message at boot, which disappears after ~2 seconds, and then the firmware screens appears exactly like it’s done before, and I can play notes.

EDIT: it really behaves as though there’s no control board whatsoever. The only sign of life in this board is the blue flash at boot. Then nothing.

6

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 30, 2022, 08:29:48 AM »

Attachment size limit exceeded, additional post.

7

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 30, 2022, 08:29:30 AM »

Attachment size limit exceeded, additional post.

8

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 30, 2022, 08:29:13 AM »

Attachment size limit exceeded, additional post.

9

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 30, 2022, 08:28:29 AM »

Thank you for your instructions.

Tested for shorts on the 5 interboard pins, on all possible combinations of pairs, on the main board and control board. No short detected.

Tested continuity from the 3 pins to the CPU legs, from the main board connectors and from the control board connectors when assembled. Continuity OK in all situations on all pins.

Attached is a series of pictures. I can't see any problem with the HC chips.

Weird... did a chip die?

10

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 29, 2022, 09:24:37 PM »

Thanks for your reply. I get 5v everywhere, not 3.3v (interboard Vcc/Gnd pins, both sides, and all 4 74HC165 power pins). Why? Did I miss some jumper?

EDIT: Or is 5v OK?

EDIT2:

I don't see your screenshot

That is most probably because my domain is non-secure http. Sorry. The picture was nice, though. 

11

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 29, 2022, 08:02:31 PM »

Like this:

12

preenfm2 and preenfm3 / Re: New VanDaal build, control board does nothing

« on: June 29, 2022, 09:58:07 AM »

I've whipped out the magnifier and noticed that two legs of the CPU are shorted. Is this normal?

13

preenfm2 and preenfm3 / [Solved] New VanDaal build, control board does nothing

« on: June 29, 2022, 02:21:32 AM »

Hi,

I've succesfully built a PreenFM2 a few years ago and I love it.

I've assembled an FM3 kit from VanDaal. I flashed it using DeFuse. It boots to the main screen but I can't do anything from there. It does the exact same thing with the control board removed.

• Mainboard LEDs: green and yellow on, blue blinks slowly.
• Control board LEDs: blue flashes once at boot and then nothing.

I've checked continuity of the board to board headers and pins and it's all right.

Don't know where to search next, any help much appreciated.

14

preenfm2 and preenfm3 / Re: 2.12 Beta 1

« on: May 23, 2020, 02:12:03 PM »

Will update right away. Double matrix destination is amazing! Thanks a lot for the hard work.

15

preenfm2 and preenfm3 / Re: Finished build, no boot

« on: May 20, 2020, 08:41:20 PM »

Okay, shorted the 22 Ohm resistor for good now with a soldered beefy cable and screen is steady. Attached images from my build, showing double shield (grounded sheet from VanDaal + 128-layer aluminium foil taped "cushion", snugged under it).

All working fine. Can't wait to test this bad boy at the jam on Friday!