Edit - unless something is obviously wrong in the M122, please dismiss for now. I've rerun this several times and have not been able to reproduce.
@chrishamm @dc42 - this just occurred (or something like it) on 3.2B4.1.
I received the following error:
Error: M280: Response timeout: CAN addr 20, req type 4012, RID=1163
289 points probed, min error -0.065, max error 0.470, mean 0.162, deviation 0.079
M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.2-beta4.1 running on Duet 3 MB6HC v0.6 or 1.0 (SBC mode)
Board ID: 08DJM-956L2-G43S4-6J1DD-3SJ6S-TB62H
Used output buffers: 1 of 40 (40 max)
=== RTOS ===
Static ram: 123292
Dynamic ram: 138720 of which 148 recycled
Never used RAM 130032, free system stack 128 words
Tasks: Linux(ready,83) HEAT(blocked,297) CanReceiv(blocked,837) CanSender(blocked,344) CanClock(blocked,352) TMC(blocked,18) MAIN(running,669) IDLE(ready,19)
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 00:43:58 ago, cause: software
Last software reset at 2020-12-09 08:22, reason: User, GCodes spinning, available RAM 130032, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0x00000000 SP 0xffffffff Task Linu
Error status: 0x04
MCU temperature: min 29.2, current 40.4, max 40.5
Supply voltage: min 1.5, current 24.2, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 0.2, current 12.1, max 12.2, under voltage events: 1
Driver 0: position 30480, standstill, reads 51957, writes 38 timeouts 0, SG min/max 0/982
Driver 1: position 0, standstill, reads 51973, writes 22 timeouts 0, SG min/max 0/0
Driver 2: position 1030, standstill, reads 51958, writes 38 timeouts 0, SG min/max 0/1023
Driver 3: position 0, standstill, reads 51949, writes 48 timeouts 0, SG min/max 0/474
Driver 4: position 0, standstill, reads 51976, writes 22 timeouts 0, SG min/max 0/0
Driver 5: position 0, standstill, reads 51950, writes 48 timeouts 0, SG min/max 0/1023
Date/time: 2020-12-09 09:06:06
Slowest loop: 999.73ms; fastest: 0.08ms
=== Storage ===
Free file entries: 10
SD card 0 not detected, interface speed: 37.5MBytes/sec
SD card longest read time 0.0ms, write time 0.0ms, max retries 0
=== Move ===
FreeDm 375 (min 370), maxWait 446390ms, bed compensation in use: mesh, comp offset 0.000
=== MainDDARing ===
Scheduled moves 2007, completed moves 2007, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 5], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamberHeaters = 2 -1 -1 -1
Heater 0 is on, I-accum = 0.5
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP* is doing "M122" 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
SBC is idle in state(s) 0
Daemon is idle in state(s) 0
Aux2 is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== CAN ===
Messages queued 15276, send timeouts 44, received 37057, lost 0, longest wait 2ms for reply type 6031, free buffers 47
=== SBC interface ===
State: 0, failed transfers: 0
Last transfer: 18ms ago
RX/TX seq numbers: 34609/34610
SPI underruns 0, overruns 0
Number of disconnects: 0, IAP RAM available 0x209ac
Buffer RX/TX: 0/0-0
=== Duet Control Server ===
Duet Control Server v3.2.0-beta4
Code buffer space: 4096
Configured SPI speed: 8000000 Hz
Full transfers per second: 38.07
M122 B20
Diagnostics for board 20:
Duet TOOL1LC firmware version 3.2-beta4.1 (2020-12-03)
Bootloader ID: SAMC21 bootloader version 2.1 (2020-11-03b2)
Never used RAM 4208, free system stack 72 words
HEAT 50 CanAsync 89 CanRecv 83 TMC 54 MAIN 216 AIN 64
Last reset 00:44:32 ago, cause: power up
Last software reset data not available
Driver 0: position 0, 830.0 steps/mm, standstill, SG min/max 0/0, read errors 0, write errors 0, ifcnt 12, reads 25496, writes 12, timeouts 0, DMA errors 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0
No step interrupt scheduled
VIN: 24.2V
MCU temperature: min 32.5C, current 56.5C, max 58.1C
Ticks since heat task active 237, ADC conversions started 2661831, completed 2661830, timed out 0
Last sensors broadcast 0x00000002 found 1 241 ticks ago, loop time 0
CAN messages queued 37596, send timeouts 0, received 28817, lost 0, free buffers 36