Messages

1

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 09, 2021, 06:49:57 PM »

Finally done! Complete in 3d printed case (7 hours print :-), hole for the SD should be about 3mm-5mm to the top). Some pictures in attachment.
Everything works, now its time for a better part - to make a noise :-)
Thank you Xavier for help, time and patience.
Best regards
Jiri.

2

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 06, 2021, 08:27:15 PM »

resoldered everything :-) incl. the headers pin on top of LCD and now its working, no error on start, I can load presets... thank you for help.

another problem OUTs. 1-2 distorted sound, 3-4 no sound, 5-6 nice clear sound. All 3 DACs the same orientation. I think DAC boards 1 and 2 need to be resolded?
Jiri

3

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 06, 2021, 01:32:40 PM »

Yes, using only the Sandisk card came in kit. OK, will try another SD cards, I have many sizes, many brands. Hope I will find one working.
Jiri

4

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 06, 2021, 09:11:04 AM »

Thank you very much, Xavier. DFU flashed, now I am on the latest firmware, ufff. Step by step :-)

Yes, still the problem with SD card, i reformated SD: full format with SD Memory Card Formatter, rewrite all sectors, no quick format, but it did not help.

The SD card error you have is '#-6#' ? - yes, how do you know it?
Should I try another SD cards? Smaller? Or another brand?

Jiri.

5

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 05, 2021, 08:10:27 PM »

Hello, no luck :-(

1. I resoldered SD card socket pins on display, still SD CARD ERROR

2. I cannot update firmware and bootloader
a)  WebUSB DFU - I have 3 options (VENDOR id) but not as in instruction, screen in attachment, I cannot connect, so firmware download is gray.
b) command line update
Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release!!!
Deducing device DFU version from functional descriptor length
Cannot open DFU device 0483:df11
No DFU capable USB device available
c) DFU SE Demo - i have only the old pfm3_0.90.dfu, this one I can upload (attachment). This one is currently in preen and preen works.

Is there another option to update FW and bootloader? Or do I missing something?
Or can you create pfm3_1.07.dfu with latest bootloader and firmware?

Thanks for help.
Jiri.

6

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 02, 2021, 12:03:56 PM »

I moved on. Resoldered all headers, cleaned rest of desoldered reset switch, reflashed DFU, now i can boot to boodloader and normaly preen. Perfect.
But I cannot access SD card "SD Card error" - SD card formated in SD formater Win 10.
In root of the card is p3_0_107.bin. When i boot to bootloader (Menu+power on) SD Card Error. Bootloader 1.01, +/- select, Button 1: Flash... but there is no FW file to select.

When I boot normaly to Preen, again SD card error for few seconds than it looks OK, screen with MIX, all controls from board works.
I cannot see DX presets: Menu - preset - DX7, but its empty. In PC I see: SD/pfm3/DX7/analog_1.syx.

Maybe flash DFU again with latest firmare?

Jiri

7

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 01, 2021, 09:16:04 PM »

After many tries i was i DFU, flashed (DfuSeDemo) bootloader and firmware, now after power up i need to short reset twice, than blue light start to blink and screen shows up now works OK, control board too.
What do you think? Without reset it wont boot up. I am on v0.90.
thanks

8

preenfm2 and preenfm3 / Re: PFM3 display black

« on: May 01, 2021, 07:07:48 PM »

no blue light at all, no blinking, no lighting.
Jumper on right: Boot 0 and Gnd.
So i need to flash fw and bootoader?
Jiri

9

preenfm2 and preenfm3 / PFM3 display black

« on: May 01, 2021, 06:25:56 PM »

Hello, today I built Preen FM 3 - kit. After power up yellow led 5v and Gnd 3.3v lights, but display is black.
Jumpers are on Dc in, Boot0 and Tft Vcc 5v.
Should be factory flashed, but no headers was soldered.
Any idea? Do I missing something?
Thanks for help.
Jiri.