MCU Flash does not persists power outages about opennept4une

[halfmanbear]

You could try a full wipe

dd if=/dev/zero bs=1 count=262144 | tr "\000" "\377" > empty.bin

stm32flash -w empty.bin -v -g 0x0 /dev/ttyS0

Then try flash again

[PapaSchlumpf70]

You could try a full wipe

dd if=/dev/zero bs=1 count=262144 | tr "\000" "\377" > empty.bin

stm32flash -w empty.bin -v -g 0x0 /dev/ttyS0

Then try flash again

Unfortunately, this did not help. Wiping MCU and flashing the created firmware did always result in no connectivity. I had to flash the firmware provided here and afterwards the created firmware from kiauh. After starting Klipper everything was working. Rebooting did work fine as well, but once I switch off the printer klipper can't connect to MCU anymore :-(
Once I reflash the created FW again it's working untill I switch off the printer.

[halfmanbear]

What method are you using? The main or alt-method?

if you wipe the flash and re build the MCU Firmware in kiauh with no bootloader (instead of 32kb) then try.

stm32flash -w /home/mks/klipper/out/klipper.bin -v -g 0x8008000 /dev/ttyS0

[PapaSchlumpf70]

What method are you using? The main or alt-method?

if you wipe the flash and re build the MCU Firmware in kiauh with no bootloader (instead of 32kb) then try.

stm32flash -w /home/mks/klipper/out/klipper.bin -v -g 0x8008000 /dev/ttyS0

First of all, thanks for your support.
Unfortunately, I didn't make any progress.
I tried both methods without success. The only advantage of investigating the alt method is that I don't need to touch the printer for flashing anymore :-)
The only process working for me is flashing the temp FW provided here and flashing the kiauh generated one afterward. Neither the one with 32kb Bootloader nor without generated FW survives a power cycle. Both survive a sudo reboot.
None FW did work flashing after wiping. I always have to go via the GIT-provided one.
What concerns me is the fact that even my backed-up stock FW is not working anymore.
As the printer is still working with the specific method I have the feeling(hope) that only a small piece is missing.

[PapaSchlumpf70]

I followed this process(32kb boot loader enabled in the config): PlastikSchmelzer:~:% sudo service klipper stop [sudo] password for mks: PlastikSchmelzer:~:% sudo gpioset gpiochip1 15=0 sleep 0.5 sudo gpioset gpiochip1 14=1 sleep 0.5 sudo gpioset gpiochip1 15=1 sleep 0.5 sudo gpioset gpiochip1 14=0 PlastikSchmelzer:~:% stm32flash -w empty.bin -v -g 0x0 /dev/ttyS0 stm32flash 0.7 http://stm32flash.sourceforge.net/ Using Parser : Raw BINARY Size : 262144 Interface serial_posix: 57600 8E1 Version : 0x31 Option 1 : 0x00 Option 2 : 0x00 Device ID : 0x0423 (STM32F401xB(C)) - RAM : Up to 64KiB (12288b reserved by bootloader) - Flash : Up to 256KiB (size first sector: 1x16384) - Option RAM : 16b - System RAM : 30KiB Write to memory Erasing memory Wrote and verified address 0x08040000 (100.00%) Done. Starting execution at address 0x08000000... done. PlastikSchmelzer:~:% stm32flash -w /home/mks/klipper/out/klipper.bin -v -S 0x08008000 -g 0x08000000 /dev/ttyS0 stm32flash 0.7 http://stm32flash.sourceforge.net/ Using Parser : Raw BINARY Location : 0x8008000 Size : 32172 Interface serial_posix: 57600 8E1 Version : 0x31 Option 1 : 0x00 Option 2 : 0x00 Device ID : 0x0423 (STM32F401xB(C)) - RAM : Up to 64KiB (12288b reserved by bootloader) - Flash : Up to 256KiB (size first sector: 1x16384) - Option RAM : 16b - System RAM : 30KiB Write to memory Erasing memory Wrote and verified address 0x0800fdac (100.00%) Done. Starting execution at address 0x08000000... done. PlastikSchmelzer:~:% sudo service klipper start PlastikSchmelzer:~:% sudo reboot Broadcast message from ***@***.*** on pts/3 (Sat 2024-01-06 12:28:43 CET): The system will reboot now! What fails.

…

Am 05.01.2024 um 21:25 schrieb HalfManBear ***@***.***>: You could try a full wipe dd if=/dev/zero bs=1 count=262144 | tr "\000" "\377" > empty.bin stm32flash -w empty.bin -v -g 0x0 /dev/ttyS0 Then try flash again — Reply to this email directly, view it on GitHub <#15 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ASVEN62WE7HCH7AIIJNMXN3YNBOU7AVCNFSM6AAAAABBO3V4J6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQNZZGIYTSMBUHE>. You are receiving this because you authored the thread.

[PapaSchlumpf70]

Not sure what I've done differently, but the last standard flash (stm32flash -w /home/mks/klipper/out/klipper.bin -v -S 0x08008000 -g 0x08000000 /dev/ttyS0) of the Kiauh generated FW did solve the issue.
The FW is now working after power cycles.
Maybe it was your aura :-)

Thanks a lot for your good work, the printer is working better than ever with your image.
Keep up the good work

[halfmanbear]

Glad you got it sorted! Enjoy