SKR2 restarts - Githubissues

oleksey commented 2 years ago

Hey,

I've got SKR2 Rev B with TFT35 E3 V3.0 and TMC2208 drivers, flashed Marlin 2.0.9.1, but once turned on printer restarts every couple of minutes. I don't understand why and don't know where to start looking for problems.

Drivers are in UART mode
changing drivers to TMC2226 didn't help
flashing marlin from bugfix branch didn't help
flashing marlin from 2.0.8.x branch didn't help
flashing marlin taken from a friend who has same setup, but working - didn't help
Checked the voltage that goes from PSU to SKR2, and it is 24.2V
When SKR2 restarts there is no dip in voltage - it constantly remains 24.2V - so it doesn't look like PSU problem
Disconnected reset pin from the display to the board - didn't help
Octoprint doesn't tell anything except this: Unexpected error while reading serial port, please consult octoprint.log for details: SerialException: 'device reports readiness to read but returned no data (device disconnected or multiple access on port?)' @ comm.py:_readline:3940 Please see https://faq.octoprint.org/serialerror for possible reasons of this. Changing monitoring state from "Starting" to "Offline after error" Connection closed, closing down monitor

Configuration.h - https://pastebin.com/0ZYPRjtk Configuration_adv.h - https://pastebin.com/MtMD64c3

Here is an example how it all goes: https://youtu.be/2pnIN2fDaCo

Any ideas what else can I check/do? I just want it to work already... :D BTW, the printer is Enter3 Pro.

sbaeder commented 2 years ago

While I don't use the TFT (just an older 12864 display via exp1/2) I also am seeing the same sort of issue. After a while, it seems to settle down and stop rebooting, and can run a print, but after a power off, it repeats the same issue of rebooting spontaneously. See same errors using Pronterface. Basically this is the message when it can't communicate due to reset.

You didn't say, but is this with the 407 or the 429 chip. Both are "rev B" boards. Mine is the 429.

oleksey commented 2 years ago

You didn't say, but is this with the 407 or the 429 chip. Both are "rev B" boards. Mine is the 429.

That is actually a good point. Mine is also 429.

I have a board with 407 chip laying around, and now that you are saying it could be something chip related, I should probably test the other board to see if there is any difference.

sbaeder commented 2 years ago

Heard back from BTT support. Suggestion to see if putting the jumper for board electronics "power" to the USB instead of the external 12/24v If it is some sort of a "glitch" in the conversion to the 3.3v power for the processor, this might help ID the issue.

Going to try that later today

oleksey commented 2 years ago

Something I have found out today here: bugfix version I've tested apparently wasn't the latest and did not include F429 chip:

#define BOARD_BTT_SKR_V2_0_REV_A      4212  // BigTreeTech SKR v2.0 Rev A (STM32F407VGT6)
#define BOARD_BTT_SKR_V2_0_REV_B      4213  // BigTreeTech SKR v2.0 Rev B (STM32F407VGT6)

but the "latest latest" bugfix version now mentions F429:

#define BOARD_BTT_SKR_V2_0_REV_A      4212  // BigTreeTech SKR v2.0 Rev A (STM32F407VGT6)
#define BOARD_BTT_SKR_V2_0_REV_B      4213  // BigTreeTech SKR v2.0 Rev B (STM32F407VGT6/STM32F429VGT6)

Haven't tested that yet, but I hope that will sort things out.

oleksey commented 2 years ago

latest Marlin build that has F429 did not help, printer still restarts. The source code was taken from BTT repository.

I guess I have to test F407 out.

oleksey commented 2 years ago

Apparently once you remove the SD card from the slot the printer stops resetting itself.

sbaeder commented 2 years ago

Tried this on mine too, and it is OK as well. Maybe issue in Marlin w.r.t. the handling of the sdcard?

bigtreetech / SKR-2

SKR2 restarts #91