MCU 'EBBCan' shutdown: Missed scheduling of next digital out event

[AlvinF01]

Randomly shutdown with message: MCU 'EBBCan' shutdown: Missed scheduling of next digital out event

Canbus: EBB36 CAN V1.2

U2C: U2C 2.1

Klipper Version: v0.10.0-613-gebc3b0de

Both Canbus and u2c is the latest one with STM32G0B1 chipset Canbus firmware based on manual config using 250k bitrate U2C firmware using the V2 firmware from github https://github.com/bigtreetech/U2C/blob/master/firmware/U2C_V2_STM32G0B1.bin

/etc/network/interfaces.d/can0

allow-hotplug can0
iface can0 can static
 bitrate 250000
 up ifconfig $IFACE txqueuelen 1024

Klipper.log

Stats 2394.8: gcodein=0  mcu: mcu_awake=0.007 mcu_task_avg=0.000010 mcu_task_stddev=0.000009 bytes_write=1688503 bytes_read=1079206 bytes_retransmit=9 bytes_invalid=0 send_seq=54108 receive_seq=54108 retransmit_seq=2 srtt=0.001 rttvar=0.000 rto=0.025 ready_bytes=51 stalled_bytes=0 freq=180001025 EBBCan: mcu_awake=0.015 mcu_task_avg=0.000018 mcu_task_stddev=0.000028 bytes_write=500821 bytes_read=285546 bytes_retransmit=782 bytes_invalid=0 send_seq=13336 receive_seq=13336 retransmit_seq=13310 srtt=0.005 rttvar=0.003 rto=0.025 ready_bytes=45 stalled_bytes=0 freq=63999174 adj=63998877 rpi: mcu_awake=0.000 mcu_task_avg=0.000008 mcu_task_stddev=0.000012 bytes_write=15258 bytes_read=48941 bytes_retransmit=0 bytes_invalid=0 send_seq=2519 receive_seq=2519 retransmit_seq=0 srtt=0.000 rttvar=0.000 rto=0.025 ready_bytes=0 stalled_bytes=0 freq=50000064 adj=49999756 sd_pos=584197 heater_bed: target=100 temp=99.7 pwm=0.305 raspberry_pi: temp=45.1 mcu_temp: temp=40.8 sysload=0.24 cputime=197.063 memavail=669104 print_time=2399.725 buffer_time=2.124 print_stall=0 extruder: target=245 temp=245.0 pwm=0.735
Stats 2395.8: gcodein=0  mcu: mcu_awake=0.010 mcu_task_avg=0.000011 mcu_task_stddev=0.000009 bytes_write=1690654 bytes_read=1079756 bytes_retransmit=9 bytes_invalid=0 send_seq=54152 receive_seq=54152 retransmit_seq=2 srtt=0.001 rttvar=0.000 rto=0.025 ready_bytes=0 stalled_bytes=0 freq=180001017 EBBCan: mcu_awake=0.015 mcu_task_avg=0.000018 mcu_task_stddev=0.000028 bytes_write=502130 bytes_read=285756 bytes_retransmit=782 bytes_invalid=0 send_seq=13359 receive_seq=13359 retransmit_seq=13310 srtt=0.006 rttvar=0.003 rto=0.025 ready_bytes=0 stalled_bytes=0 freq=63999167 adj=63998927 rpi: mcu_awake=0.000 mcu_task_avg=0.000008 mcu_task_stddev=0.000012 bytes_write=15264 bytes_read=48957 bytes_retransmit=0 bytes_invalid=0 send_seq=2520 receive_seq=2520 retransmit_seq=0 srtt=0.000 rttvar=0.000 rto=0.025 ready_bytes=0 stalled_bytes=0 freq=50000063 adj=49999770 sd_pos=584804 heater_bed: target=100 temp=99.7 pwm=0.305 raspberry_pi: temp=44.0 mcu_temp: temp=40.8 sysload=0.22 cputime=197.161 memavail=669224 print_time=2400.726 buffer_time=2.125 print_stall=0 extruder: target=245 temp=245.1 pwm=0.735
Stats 2396.8: gcodein=0  mcu: mcu_awake=0.010 mcu_task_avg=0.000011 mcu_task_stddev=0.000009 bytes_write=1694367 bytes_read=1080435 bytes_retransmit=9 bytes_invalid=0 send_seq=54222 receive_seq=54222 retransmit_seq=2 srtt=0.001 rttvar=0.000 rto=0.025 ready_bytes=39 stalled_bytes=0 freq=180001010 EBBCan: mcu_awake=0.015 mcu_task_avg=0.000018 mcu_task_stddev=0.000028 bytes_write=504023 bytes_read=286017 bytes_retransmit=1313 bytes_invalid=0 send_seq=13392 receive_seq=13389 retransmit_seq=13392 srtt=0.007 rttvar=0.003 rto=0.200 ready_bytes=244 stalled_bytes=11 freq=63999159 adj=63998858 rpi: mcu_awake=0.000 mcu_task_avg=0.000008 mcu_task_stddev=0.000012 bytes_write=15270 bytes_read=48973 bytes_retransmit=0 bytes_invalid=0 send_seq=2521 receive_seq=2521 retransmit_seq=0 srtt=0.000 rttvar=0.000 rto=0.025 ready_bytes=0 stalled_bytes=0 freq=50000063 adj=49999792 sd_pos=586083 heater_bed: target=100 temp=99.7 pwm=0.305 raspberry_pi: temp=44.0 mcu_temp: temp=40.8 sysload=0.22 cputime=197.286 memavail=669000 print_time=2401.909 buffer_time=2.306 print_stall=0 extruder: target=245 temp=245.2 pwm=0.682
toolhead: max_velocity: 300.000000
max_accel: 3000.000000
max_accel_to_decel: 1500.000000
square_corner_velocity: 5.000000
toolhead: max_velocity: 300.000000
max_accel: 1000.000000
max_accel_to_decel: 500.000000
square_corner_velocity: 5.000000
Stats 2397.8: gcodein=0  mcu: mcu_awake=0.010 mcu_task_avg=0.000011 mcu_task_stddev=0.000009 bytes_write=1697281 bytes_read=1081048 bytes_retransmit=9 bytes_invalid=0 send_seq=54279 receive_seq=54279 retransmit_seq=2 srtt=0.001 rttvar=0.000 rto=0.025 ready_bytes=28 stalled_bytes=0 freq=180001004 EBBCan: mcu_awake=0.015 mcu_task_avg=0.000018 mcu_task_stddev=0.000028 bytes_write=504023 bytes_read=286065 bytes_retransmit=1667 bytes_invalid=0 send_seq=13392 receive_seq=13389 retransmit_seq=13392 srtt=0.007 rttvar=0.003 rto=0.800 ready_bytes=244 stalled_bytes=810 freq=63999159 adj=63998777 rpi: mcu_awake=0.000 mcu_task_avg=0.000008 mcu_task_stddev=0.000012 bytes_write=15276 bytes_read=48989 bytes_retransmit=0 bytes_invalid=0 send_seq=2522 receive_seq=2522 retransmit_seq=0 srtt=0.000 rttvar=0.000 rto=0.025 ready_bytes=0 stalled_bytes=0 freq=50000063 adj=49999801 sd_pos=586791 heater_bed: target=100 temp=99.8 pwm=0.245 raspberry_pi: temp=44.5 mcu_temp: temp=40.7 sysload=0.22 cputime=197.369 memavail=670132 print_time=2402.613 buffer_time=2.009 print_stall=0 extruder: target=245 temp=245.2 pwm=0.682
MCU 'EBBCan' shutdown: Missed scheduling of next digital out event

Receive: 93 2396.416949 2396.393688 16: seq: 11, thermocouple_result oid=7 next_clock=3275030975 value=29314 fault=0
Receive: 94 2396.716818 0.000000 16: seq: 1d, thermocouple_result oid=7 next_clock=3294230975 value=29316 fault=0
Receive: 95 2397.017185 0.000000 16: seq: 1d, thermocouple_result oid=7 next_clock=3313430975 value=29318 fault=0
Receive: 96 2397.317321 0.000000 16: seq: 1d, thermocouple_result oid=7 next_clock=3332630975 value=29318 fault=0
Receive: 97 2397.617566 0.000000 16: seq: 1d, thermocouple_result oid=7 next_clock=3351830975 value=29318 fault=0
Receive: 98 2397.916577 0.000000 16: seq: 1d, thermocouple_result oid=7 next_clock=3371030975 value=29318 fault=0
Receive: 99 2398.116943 0.000000 12: seq: 1d, shutdown clock=3364630800 static_string_id=Missed scheduling of next digital out event
Transition to shutdown state: MCU 'EBBCan' shutdown: Missed scheduling of next digital out event
This is generally indicative of an intermittent
communication failure between micro-controller and host.

It seems shutdown during thermocouple