No USB-Midi: Is this the correct bootloader blinking?

[jrp]

Dear Midibox-Forum,

i just was trying to use a core32 for the first time.

I flashed the ST-Link firmware, installed the driver and uploaded the bootloader on my STM32F4Discovery following the described methode using my win11 Laptop. 

 

Unfortunately, when i connect the micro-usb port neither my windows, nor my m2 mac computers detect any midi interface. 

When i look at the system-info under usb, i see the st-link, but nothing else.

I tried both micro-usb cables i could find around the house. Of course they could both be faulty, i have no other device to test them with.

 

I attached a short video of me pressing the reset button. Is this the correct light pattern on the board? In other words, is my bootloader running?

 

Thanks,

Jens

Edited February 1 by jrp

[TK.]

Hi Jens,

yes - the flashing LED indicates that the bootloader is running.

It's strange that USB MIDI doesn't appear on two different computers. The only difference I noticed in your video so far: you are using a MB997C board, while I started with a MB997B, and later switched to a MB997D

Not 100% sure, but it could be that this board revision requires a fix - see for example: 

Best Regards, Thorsten.

[jrp]

Hi Thorsten,

thanks so much!

I tried everything suggested in that other thread, with no result.

 

Then i managed to get my hands on a few more micro-usb cables.

Guess what, i had been switching between two faulty cables. Everything is running fine now, core is detected in Mios-Studio.

 

PS.: I am  happy to be back with this stuff :) Back at ucapps.de

Didn´t find the time for a long while. Now i got a job at the HfM Nürnberg to (among other stuff) build robotic percussion... If all goes to plan they will be powered by midibox :)

Edited February 3 by jrp