Software assertion with 3.2 beta 2

[Schmart]

Hi, I have a filament unload macro to unload PETG filament in a skinny dip-like fashion. This worked before on stable RRF 3.1, but now crashes the firmware. AnM122 yielded the following:

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 Maestro version 3.2-beta2 running on Duet Maestro 1.0
Board ID: 08D8M-9T8A2-MQNS0-7J1FA-3SS6R-KRTAW
Used output buffers: 3 of 24 (14 max)
=== RTOS ===
Static ram: 22684
Dynamic ram: 97168 of which 24 recycled
Exception stack ram used: 192
Never used ram: 11004
Tasks: NETWORK(ready,168) HEAT(blocked,330) TMC(blocked,71) MAIN(running,482) IDLE(ready,20)
Owned mutexes:
=== Platform ===
Last reset 00:10:10 ago, cause: software
Last software reset at 2020-11-06 10:21, reason: AssertionFailed, GCodes spinning, available RAM 10940, slot 2
Software reset code 0x4123 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x04418000 BFAR 0xe000ed38 SP 0x2000444c Task MAIN
Stack: 0000059e 0047887c 00457f91 ffffffff ffffffff 006d0065 006e006f 20003470 ffffffff 00000000 00000079 20003080 00458013 20004498 004663a0 20007400 00455947 200044b4 0044e90b 20003464 00000000 00000001 200044bc 00000000 0044e979 00456541 200044bc
Error status: 0x00
MCU temperature: min 32.0, current 33.0, max 33.5
Supply voltage: min 0.0, current 24.0, max 24.1, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: position 0, standstill, read errors 0, write errors 1, ifcnt 26, reads 36231, writes 8, timeouts 0, DMA errors 0
Driver 1: position 0, standstill, read errors 0, write errors 1, ifcnt 26, reads 36231, writes 8, timeouts 0, DMA errors 0
Driver 2: position 0, standstill, read errors 0, write errors 1, ifcnt 26, reads 36231, writes 8, timeouts 0, DMA errors 0
Driver 3: position 0, standstill, read errors 0, write errors 1, ifcnt 30, reads 36231, writes 8, timeouts 0, DMA errors 0
Driver 4: position 0, standstill, read errors 0, write errors 1, ifcnt 20, reads 36233, writes 6, timeouts 0, DMA errors 0
Driver 5: position 0, ok, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 36239, DMA errors 0, failedOp 0x80
Driver 6: position 0, ok, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 36239, DMA errors 0, failedOp 0x80
Date/time: 2020-11-06 10:31:32
Slowest loop: 6.06ms; fastest: 0.14ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 15.0MBytes/sec
SD card longest read time 1.1ms, write time 0.0ms, max retries 0
=== Move ===
Hiccups: 0(0), FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== AuxDDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
=== Heat ===
Bed heaters = 0 -1, chamberHeaters = -1 -1
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 147.41ms; fastest: 0.01ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex

The filament's unload.g macro is set up like this.

M83           ; Set extruder to relative mode
M109 S200     ; Wait for hotend to reach target temperature
M104 S0       ; Disable hotend immediately so the temperature drops while skinny-dipping
G1 E20 F120   ; Extrude 20mm with a speed of 2mm/s

G1 E-2 F600   ; Retract 2mm with a speed of 10mm/s
G4 P1000      ; Wait for 1s

G1 E-5 F60    ; Retract 5mm more with a speed of 1mm/s

G1 E4.8 F60   ; Dip tip back in slowly
G1 E-5 F60    ; Pull it out again
G1 E4.8 F60   ; Dip tip back in slowly
G1 E-5 F60    ; Pull it out again
G1 E4.8 F60   ; Dip tip back in slowly
G1 E-5 F60    ; Pull it out again

G1 E-50 F3600 ; Retract 50mm with a speed of 60mm/s

The macro doesn't seem to complete to the end. When the firmware resets, the temperature has dropped to 180℃. I'm not using M302 in my config to set a different minimum extrusion temperature, so that should be still the default @ 160℃ according to the documentation. Hopefully this is sufficient information to clarify what's going on.

[dc42]

This is a known issue in 3.2beta2 with M701 and M702 commands. I suggest you revert to beta1 until we release beta3.

[Schmart]

@dc42 said in Software assertion with 3.2 beta 2:

M701

Apologies, I hadn't linked the issue to the M701/M702 commands. I thought it was something in the macro that triggered it. Thanks for the quick response!