[BFW-7717][BUG] Prusa XL w/ Enclosure reports 0C temperature

[n8many]

Printer model

XL5T

Firmware version

6.4.0-alpha

Upgrades and modifications

No response

Printing from...

Octoprint

Describe the bug

After loading the alpha firmware, the printer no longer reports a temperature for the enclosure and instead reports 0C at the bottom, and N/A from the enclosure screen.

My understanding of how it calculates a temperature is via a sensor on the active tool.

How to reproduce

Load alpha firmware on Prusa XL with enclosure with the bottom icons set to show enclosure temperature.

Start print.

Temperature should be displayed as 0C when it would show a temperature on the previous firmware.

Expected behavior

Chamber temperature should display as in 6.2.6.

Files

Sample reported temperature command from octoprint to help debug

Recv: T:215.00/215.00 B:59.92/60.00 C:-19.06/0.00 X0:46.00/36.00 A:82.30/0.00 T0:215.00/215.00 T1:27.00/0.00 T2:26.00/0.00 T3:27.00/0.00 T4:26.00/0.00 T5:6.00/0.00 @:69 B@:0 HBR@:255 @0:69 @1:0 @2:0 @3:0 @4:0 @5:0 B_0_0:45.00/45.00 B_1_0:45.00/45.00 B_2_0:45.00/45.00 B_3_0:45.00/45.00 B_0_1:60.00/60.00 B_1_1:60.00/60.00 B_2_1:59.80/60.00 B_3_1:60.00/60.00 B_0_2:45.00/45.00 B_1_2:59.90/60.00 B_2_2:60.00/60.00 B_3_2:45.00/45.00 B_0_3:35.50/30.00 B_1_3:45.00/45.00 B_2_3:45.00/45.00 B_3_3:35.80/30.00

It appears chamber temperature is negative here?

[3d-gussner]

@n8many Thanks for testing 6.4.0-alpha and reporting this issue.

[eqdeng]

I have the same issue. We are using Prusa Connect and not Octoprint. Telemetry data also shows 0°C.

[GwynnePrints]

Hello,

I would like to confirm I have the same presenting issue.

This is without octoprint.

MCU and Board both show 0.0C

This is on the Core one and MK4S on the latest firmware.

Both during and after prints, it shows 0.0C on both.

Otherwise it is functioning.

[3d-gussner]

@GwynnePrints Thanks for the information. Can you tell me in which firmware versions it was working for the CoreOne and MK4S

[GwynnePrints]

@GwynnePrints Thanks for the information. Can you tell me in which firmware versions it was working for the CoreOne and MK4S

No worries. It was working on them both in the previous 6.2.4 firmware

[BlueFyre]

FYI as far as the serial output is concerned it might also be affected by this PR which is outstanding: #4671
(though that might need to be rebased)

[3d-gussner]

@BlueFyre It is not only the chamber temperature there are multiple Sensor Info values 0 in this alpha release.

[Prusa-Support]

Thanks for reporting.
This issue is expected to be solved by FW 6.4.0-RC2 however, we would appreciate your feedback before closing.

Michele Moramarco
Prusa Research

[eqdeng]

I just ran a first print on 6.4.0-RC2 and prior to print start (during heat absorption, nozzle cleaning, etc.), Enclosure Temp read ---, then once the print began it read the correct temperature.