TheBackShed.com

Forum Index : Microcontroller and PC projects : MMBasic V6.03.00 release candidates

Page 28 of 28

Author

Message

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 1113

Posted: 08:53am 23 Jun 2026

Copy link to clipboard

Print this post

I don't even get that far - the PicoCalc won't boot up after flashing.

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11531

Posted: 09:09am 23 Jun 2026

Copy link to clipboard

Print this post

Nothing on a serial console connected direct to the Pico?

ville56
Guru

Joined: 08/06/2022
Location: Austria
Posts: 532

Posted: 09:17am 23 Jun 2026

Copy link to clipboard

Print this post

Frank N. Furter said Okay, first I ran "flash_nuke.uf2". Then I flashed "PicoMiteRP2350V6.03.00RC23.uf2". So far, everything was fine, and I got a message saying that Drive A had been formatted.

After that, I loaded the file above from the SD card and saved it using LIBRARY SAVE.
From that point on, nothing works anymore - the LCD stays black. Re-flashing with "flash_nuke.uf2" and flashing with "PicoMiteRP2350V6.03.00RC23.uf2" doesn't help. The LCD stays black.

It looks to me like something is going wrong with LIBRARY SAVE, and a "flash_nuke.uf2" file doesn't fix the problem.

Frank

you may try the version I posted some time before
Flash-nuke for A4 stepping

73 de OE1HGA, Gerald

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 1113

Posted: 09:18am 23 Jun 2026

Copy link to clipboard

Print this post

Apparently, the Pico doesn't start up every time. Just now, the normal startup message appeared, along with a message that drive A had been formatted. After turning it on again, the LCD screen remains black. And there's no heartbeat flashing either!

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11531

Posted: 09:21am 23 Jun 2026

Copy link to clipboard

Print this post

Sounds like the flash is corrupted. Try ville56's nuke. I haven't got a PicoCalc but other than the PicoCalc bios I've set up a H/W analogue and everything works perfectly for me including your library code. There was a change between RC22 and RC23 that affected the format command hence why I asked you to recode that line but RC24 has a minor tweak to that which should fix any potential issue in format$(.
Edited 2026-06-23 19:25 by matherp

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 1113

Posted: 09:25am 23 Jun 2026

Copy link to clipboard

Print this post

Can you give me a link to that?

Update:
If you can read, you've got a clear advantage!

Thanks - I overlooked the post above...

Frank
Edited 2026-06-23 19:41 by Frank N. Furter

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11531

Posted: 09:38am 23 Jun 2026

Copy link to clipboard

Print this post

https://github.com/Gadgetoid/pico-universal-flash-nuke/releases/download/v1.1.0/universal_flash_nuke.uf2

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 1113

Posted: 09:47am 23 Jun 2026

Copy link to clipboard

Print this post

Thanks Peter!

Okay, I loaded universal_flash_nuke and then RC24. Unfortunately, the behavior is the same. PicoCalc only starts up sporadically and very rarely. (No heartbeat)

toml_12953
Guru

Joined: 13/02/2015
Location: United States
Posts: 661

Posted: 09:55am 23 Jun 2026

Copy link to clipboard

Print this post

Frank N. Furter said Something's not working right with the new version on PicoCalc.

I flashed my PicoCalc with "PicoMiteRP2350V6.03.00RC23.uf2" and loaded my mm.startup from SD card
Frank

I copied your code into my two PicoCalcs and they worked fine as shown below. Of course, I don't have a temperature sensor attached and it's warm here but not that warm!:

Frank N. Furter
Guru

Joined: 28/05/2012
Location: Germany
Posts: 1113

Posted: 09:58am 23 Jun 2026

Copy link to clipboard

Print this post

It's not the code. RC22 is still running smoothly for me.

Frank

Page 28 of 28

Print this page

To reply to this topic, you need to log in.