Contents of /etc/network/interfaces.d/can0 are:
auto can0
iface can0 can static
bitrate 5000000
up ifconfig $IFACE txqueuelen 1000
Previously I also tried:
allow-hotplug can0
ifface cam0 can static
bitrate 10000000
up ip link set can0 txqueuelen 1024
There seems to be no difference - I get the error with either one of them.
I now will try to flash that firmware you provided, than you.
Both of these have problems and won’t work. You’ve specified a bitrate in the top one of 5M which is not valid. You need to change it to 500000, and I would also suggest using a txqueuelen of 128 as recommended in the Klipper docs. Try using this:
auto can0
iface can0 can static
bitrate 500000
up ifconfig $IFACE txqueuelen 128
You also need to reboot after editing this file.
I should mention, I’m assuming you’ve flashed your EBB36 with firmware for 500k baud. If you flashed it for a different speed, you need to match that speed in your interfaces file. You can’t mix and match.
Thank you very much. I guess this was what I messed up. I flashed with 1M baud. So now I set my /etc/network/interfaces.d/can0 to:
auto can0
iface can0 can static
bitrate 1000000
up ifconfig $IFACE txqueuelen 128
And the printer finally boots. I will now attempt to bring in a minimum amount of macros to perform homing and QGL to see if the issue persists.
Okay, so after this change, printer boots, but it still crashes during QGL with Lost communication with MCU 'can0'
For clarity:
My /etc/network/interfaces.d/can0 is:
auto can0
iface can0 can static
bitrate 1000000
up ifconfig $IFACE txqueuelen 128
My printer.cfg is:
printer.cfg (9.1 KB)
(I included the minimum amount of Klicky configs/macro files to make it possible to perform QGL)
sudo dmesg reports:
pi@V24RP:~ $ sudo dmesg
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 5.10.103-v7+ (dom@buildbot) (arm-linux-gnueabihf-gcc-8 (Ubuntu/Linaro 8.4.0-3ubuntu1) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #1529 SMP Tue Mar 8 12:21:37 GMT 2022
[ 0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Plus Rev 1.3
[ 0.000000] random: fast init done
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] Reserved memory: created CMA memory pool at 0x34000000, size 64 MiB
[ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000000000-0x0000000037ffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x0000000037ffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000037ffffff]
[ 0.000000] On node 0 totalpages: 229376
[ 0.000000] DMA zone: 2016 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 229376 pages, LIFO batch:63
[ 0.000000] percpu: Embedded 20 pages/cpu s50828 r8192 d22900 u81920
[ 0.000000] pcpu-alloc: s50828 r8192 d22900 u81920 alloc=20*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 227360
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=tty1 root=PARTUUID=b1d487b5-02 rootfstype=ext4 fsck.repair=yes rootwait
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 826024K/917504K available (10240K kernel code, 1312K rwdata, 2952K rodata, 1024K init, 862K bss, 25944K reserved, 65536K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] ftrace: allocating 32081 entries in 95 pages
[ 0.000000] ftrace: allocated 94 pages with 5 groups
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] Rude variant of Tasks RCU enabled.
[ 0.000000] Tracing variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] random: get_random_bytes called from start_kernel+0x3ac/0x580 with crng_init=1
[ 0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[ 0.000007] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[ 0.000024] Switching to timer-based delay loop, resolution 52ns
[ 0.000310] Console: colour dummy device 80x30
[ 0.001131] printk: console [tty1] enabled
[ 0.001204] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[ 0.001263] pid_max: default: 32768 minimum: 301
[ 0.001489] LSM: Security Framework initializing
[ 0.001753] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[ 0.001802] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[ 0.003274] cgroup: Disabling memory control group subsystem
[ 0.003559] CPU: Testing write buffer coherency: ok
[ 0.004076] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.005334] Setting up static identity map for 0x100000 - 0x10003c
[ 0.005543] rcu: Hierarchical SRCU implementation.
[ 0.006481] smp: Bringing up secondary CPUs ...
[ 0.007653] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.008929] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[ 0.010244] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[ 0.010402] smp: Brought up 1 node, 4 CPUs
[ 0.010456] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[ 0.010488] CPU: All CPU(s) started in HYP mode.
[ 0.010515] CPU: Virtualization extensions available.
[ 0.011520] devtmpfs: initialized
[ 0.029036] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4
[ 0.029332] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.029394] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.032438] pinctrl core: initialized pinctrl subsystem
[ 0.033640] NET: Registered protocol family 16
[ 0.037856] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[ 0.043600] audit: initializing netlink subsys (disabled)
[ 0.044514] thermal_sys: Registered thermal governor 'step_wise'
[ 0.045310] audit: type=2000 audit(0.040:1): state=initialized audit_enabled=0 res=1
[ 0.045537] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.045579] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.045901] Serial: AMBA PL011 UART driver
[ 0.065276] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[ 0.080151] raspberrypi-firmware soc:firmware: Attached to firmware from 2021-12-01T15:08:00, variant start_x
[ 0.090163] raspberrypi-firmware soc:firmware: Firmware hash is 71bd3109023a0c8575585ba87cbb374d2eeb038f
[ 0.134405] Kprobes globally optimized
[ 0.139425] bcm2835-dma 3f007000.dma: DMA legacy API manager, dmachans=0x1
[ 0.141802] SCSI subsystem initialized
[ 0.142088] usbcore: registered new interface driver usbfs
[ 0.142174] usbcore: registered new interface driver hub
[ 0.142267] usbcore: registered new device driver usb
[ 0.144203] clocksource: Switched to clocksource arch_sys_counter
[ 1.863374] VFS: Disk quotas dquot_6.6.0
[ 1.863527] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 1.863751] FS-Cache: Loaded
[ 1.864006] CacheFiles: Loaded
[ 1.873968] NET: Registered protocol family 2
[ 1.874317] IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 1.876414] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[ 1.876509] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
[ 1.876654] TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 1.876867] TCP: Hash tables configured (established 8192 bind 8192)
[ 1.877072] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
[ 1.877151] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
[ 1.877456] NET: Registered protocol family 1
[ 1.878306] RPC: Registered named UNIX socket transport module.
[ 1.878341] RPC: Registered udp transport module.
[ 1.878370] RPC: Registered tcp transport module.
[ 1.878399] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 1.880069] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[ 1.883792] Initialise system trusted keyrings
[ 1.884080] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[ 1.893697] zbud: loaded
[ 1.895846] FS-Cache: Netfs 'nfs' registered for caching
[ 1.896765] NFS: Registering the id_resolver key type
[ 1.896827] Key type id_resolver registered
[ 1.896857] Key type id_legacy registered
[ 1.897028] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 1.897065] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 1.898297] Key type asymmetric registered
[ 1.898331] Asymmetric key parser 'x509' registered
[ 1.898403] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[ 1.898443] io scheduler mq-deadline registered
[ 1.898473] io scheduler kyber registered
[ 1.902011] bcm2708_fb soc:fb: FB found 1 display(s)
[ 1.914701] Console: switching to colour frame buffer device 82x26
[ 1.922021] bcm2708_fb soc:fb: Registered framebuffer for display 0, size 656x416
[ 1.931116] Serial: 8250/16550 driver, 1 ports, IRQ sharing enabled
[ 1.936046] bcm2835-rng 3f104000.rng: hwrng registered
[ 1.939042] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[ 1.945056] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[ 1.962602] brd: module loaded
[ 1.977575] loop: module loaded
[ 1.982145] Loading iSCSI transport class v2.0-870.
[ 1.986802] usbcore: registered new interface driver lan78xx
[ 1.989525] usbcore: registered new interface driver smsc95xx
[ 1.992124] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 2.723189] Core Release: 2.80a
[ 2.725758] Setting default values for core params
[ 2.728272] Finished setting default values for core params
[ 2.931149] Using Buffer DMA mode
[ 2.933673] Periodic Transfer Interrupt Enhancement - disabled
[ 2.936287] Multiprocessor Interrupt Enhancement - disabled
[ 2.938874] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 2.941416] Dedicated Tx FIFOs mode
[ 2.944431] WARN::dwc_otg_hcd_init:1074: FIQ DMA bounce buffers: virt = b4114000 dma = 0xf4114000 len=9024
[ 2.951524] FIQ FSM acceleration enabled for :
Non-periodic Split Transactions
Periodic Split Transactions
High-Speed Isochronous Endpoints
Interrupt/Control Split Transaction hack enabled
[ 2.962491] dwc_otg: Microframe scheduler enabled
[ 2.962572] WARN::hcd_init_fiq:457: FIQ on core 1
[ 2.966892] WARN::hcd_init_fiq:458: FIQ ASM at 807cb8b8 length 36
[ 2.971322] WARN::hcd_init_fiq:497: MPHI regs_base at b8810000
[ 2.975773] dwc_otg 3f980000.usb: DWC OTG Controller
[ 2.978085] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[ 2.980453] dwc_otg 3f980000.usb: irq 89, io mem 0x00000000
[ 2.982774] Init: Port Power? op_state=1
[ 2.985020] Init: Power Port (0)
[ 2.987542] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[ 2.992130] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.994611] usb usb1: Product: DWC OTG Controller
[ 2.996969] usb usb1: Manufacturer: Linux 5.10.103-v7+ dwc_otg_hcd
[ 2.999364] usb usb1: SerialNumber: 3f980000.usb
[ 3.002543] hub 1-0:1.0: USB hub found
[ 3.005026] hub 1-0:1.0: 1 port detected
[ 3.008849] dwc_otg: FIQ enabled
[ 3.008862] dwc_otg: NAK holdoff enabled
[ 3.008874] dwc_otg: FIQ split-transaction FSM enabled
[ 3.008892] Module dwc_common_port init
[ 3.009183] usbcore: registered new interface driver usb-storage
[ 3.011851] mousedev: PS/2 mouse device common for all mice
[ 3.015549] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[ 3.020736] sdhci: Secure Digital Host Controller Interface driver
[ 3.023275] sdhci: Copyright(c) Pierre Ossman
[ 3.026573] mmc-bcm2835 3f300000.mmcnr: could not get clk, deferring probe
[ 3.029819] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[ 3.032639] sdhci-pltfm: SDHCI platform and OF driver helper
[ 3.037180] ledtrig-cpu: registered to indicate activity on CPUs
[ 3.040203] hid: raw HID events driver (C) Jiri Kosina
[ 3.042958] usbcore: registered new interface driver usbhid
[ 3.045600] usbhid: USB HID core driver
[ 3.053493] Initializing XFRM netlink socket
[ 3.056149] NET: Registered protocol family 17
[ 3.058767] Key type dns_resolver registered
[ 3.061732] Registering SWP/SWPB emulation handler
[ 3.064266] registered taskstats version 1
[ 3.066613] Loading compiled-in X.509 certificates
[ 3.069822] Key type ._fscrypt registered
[ 3.072147] Key type .fscrypt registered
[ 3.074505] Key type fscrypt-provisioning registered
[ 3.088018] uart-pl011 3f201000.serial: there is not valid maps for state default
[ 3.092879] uart-pl011 3f201000.serial: cts_event_workaround enabled
[ 3.095420] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 114, base_baud = 0) is a PL011 rev2
[ 3.102649] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver
[ 3.106958] mmc-bcm2835 3f300000.mmcnr: mmc_debug:0 mmc_debug2:0
[ 3.109484] mmc-bcm2835 3f300000.mmcnr: DMA channel allocated
[ 3.134353] Indeed it is in host mode hprt0 = 00021501
[ 3.198677] sdhost: log_buf @ (ptrval) (f4113000)
[ 3.239557] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[ 3.243678] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 3.247762] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 3.251130] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[ 3.256441] of_cfs_init
[ 3.259010] of_cfs_init: OK
[ 3.262501] Waiting for root device PARTUUID=b1d487b5-02...
[ 3.275535] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[ 3.342603] mmc0: host does not support reading read-only switch, assuming write-enable
[ 3.347499] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 3.350239] Indeed it is in host mode hprt0 = 00001101
[ 3.414448] mmc0: new high speed SDHC card at address aaaa
[ 3.417931] mmcblk0: mmc0:aaaa SD32G 29.7 GiB
[ 3.423519] mmc1: new high speed SDIO card at address 0001
[ 3.428482] mmcblk0: p1 p2
[ 3.454310] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[ 3.456659] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[ 3.584653] usb 1-1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3
[ 3.589370] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.592729] hub 1-1:1.0: USB hub found
[ 3.595432] hub 1-1:1.0: 4 ports detected
[ 3.648351] EXT4-fs (mmcblk0p2): recovery complete
[ 3.653103] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.658477] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 3.669267] devtmpfs: mounted
[ 3.679548] Freeing unused kernel memory: 1024K
[ 3.682763] Run /sbin/init as init process
[ 3.685421] with arguments:
[ 3.685432] /sbin/init
[ 3.685443] with environment:
[ 3.685454] HOME=/
[ 3.685465] TERM=linux
[ 3.914269] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 4.044637] usb 1-1.1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3
[ 4.049986] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 4.053725] hub 1-1.1:1.0: USB hub found
[ 4.056689] hub 1-1.1:1.0: 3 ports detected
[ 4.154271] usb 1-1.2: new full-speed USB device number 4 using dwc_otg
[ 4.261393] systemd[1]: System time before build time, advancing clock.
[ 4.301277] usb 1-1.2: New USB device found, idVendor=1d50, idProduct=614e, bcdDevice= 1.00
[ 4.306772] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4.309591] usb 1-1.2: Product: stm32f446xx
[ 4.312323] usb 1-1.2: Manufacturer: Klipper
[ 4.315084] usb 1-1.2: SerialNumber: 400043000451303431333234
[ 4.420807] NET: Registered protocol family 10
[ 4.425104] Segment Routing with IPv6
[ 4.505866] systemd[1]: systemd 241 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)
[ 4.515448] systemd[1]: Detected architecture arm.
[ 4.593923] systemd[1]: Set hostname to <V24RP>.
[ 4.624330] usb 1-1.3: new full-speed USB device number 5 using dwc_otg
[ 4.758316] usb 1-1.3: New USB device found, idVendor=1d50, idProduct=606f, bcdDevice= 0.00
[ 4.764271] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4.767263] usb 1-1.3: Product: CANable-MKS gs_usb
[ 4.770436] usb 1-1.3: Manufacturer: makerbase
[ 4.773154] usb 1-1.3: SerialNumber: 001C00355741570D20393033
[ 5.054284] usb 1-1.1.1: new high-speed USB device number 6 using dwc_otg
[ 5.184863] usb 1-1.1.1: New USB device found, idVendor=0424, idProduct=7800, bcdDevice= 3.00
[ 5.190352] usb 1-1.1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 5.470818] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): No External EEPROM. Setting MAC Speed
[ 5.499824] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): int urb period 64
[ 5.552735] random: systemd: uninitialized urandom read (16 bytes read)
[ 5.569920] random: systemd: uninitialized urandom read (16 bytes read)
[ 5.574405] systemd[1]: Listening on Journal Socket.
[ 5.581156] random: systemd: uninitialized urandom read (16 bytes read)
[ 5.592343] systemd[1]: Starting Restore / save the current clock...
[ 5.600212] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ 5.611215] systemd[1]: Listening on Syslog Socket.
[ 5.618867] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ 5.630231] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[ 5.641080] systemd[1]: Listening on udev Kernel Socket.
[ 5.864043] mc: Linux media interface: v0.10
[ 5.907659] videodev: Linux video capture interface: v2.00
[ 5.959066] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[ 5.966234] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[ 5.968743] [vc_sm_connected_init]: start
[ 5.972080] [vc_sm_connected_init]: installed successfully
[ 6.000203] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[ 6.047573] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[ 6.367928] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 6.521192] systemd-journald[120]: Received request to flush runtime journal from PID 1
[ 7.173891] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.
[ 7.181790] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13
[ 7.182279] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video14
[ 7.182679] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video15
[ 7.183138] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16
[ 7.183167] bcm2835-isp bcm2835-isp: Register output node 0 with media controller
[ 7.183209] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller
[ 7.183231] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller
[ 7.183252] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller
[ 7.183470] bcm2835-isp bcm2835-isp: Loaded V4L2 bcm2835-isp
[ 7.203627] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[ 7.241543] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[ 7.241628] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[ 7.247905] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[ 7.247964] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[ 7.256263] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[ 7.256320] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[ 7.259702] bcm2835-codec bcm2835-codec: Device registered as /dev/video18
[ 7.259757] bcm2835-codec bcm2835-codec: Loaded V4L2 image_fx
[ 7.261831] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[ 7.270875] bcm2835_audio bcm2835_audio: card created with 8 channels
[ 7.631116] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 7.636921] CAN device driver interface
[ 7.642777] gs_usb 1-1.3:1.0: Configuring for 1 interfaces
[ 7.644460] usbcore: registered new interface driver gs_usb
[ 7.743364] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
[ 7.745029] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 7.745797] usbcore: registered new interface driver cdc_acm
[ 7.745816] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 7.784772] cfg80211: loaded regulatory.db is malformed or signature is missing/invalid
[ 7.849990] brcmfmac: F1 signature read @0x18000000=0x15264345
[ 7.877801] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 7.884787] usbcore: registered new interface driver brcmfmac
[ 8.173404] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 8.210731] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Nov 1 2021 00:37:25 version 7.45.241 (1a2f2fa CY) FWID 01-703fd60
[ 8.775615] random: crng init done
[ 8.775642] random: 7 urandom warning(s) missed due to ratelimiting
[ 9.468919] IPv6: ADDRCONF(NETDEV_CHANGE): can0: link becomes ready
[ 10.148728] 8021q: 802.1Q VLAN Support v1.8
[ 10.314241] Adding 262140k swap on /var/swap. Priority:-2 extents:2 across:286716k SSFS
[ 10.332944] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled
[ 10.521145] 8021q: adding VLAN 0 to HW filter on device eth0
[ 15.875783] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 17.760770] ICMPv6: process `dhcpcd' is using deprecated sysctl (syscall) net.ipv6.neigh.wlan0.retrans_time - use net.ipv6.neigh.wlan0.retrans_time_ms instead
[ 30.031546] can: controller area network core
[ 30.031627] NET: Registered protocol family 29
[ 30.043749] can: raw protocol
[ 111.595151] usb 1-1.2: USB disconnect, device number 4
[ 113.165586] usb 1-1.2: new full-speed USB device number 7 using dwc_otg
[ 113.312610] usb 1-1.2: New USB device found, idVendor=1d50, idProduct=614e, bcdDevice= 1.00
[ 113.312623] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 113.312630] usb 1-1.2: Product: stm32f446xx
[ 113.312637] usb 1-1.2: Manufacturer: Klipper
[ 113.312643] usb 1-1.2: SerialNumber: 400043000451303431333234
[ 113.314773] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
ifconfig reports:
pi@V24RP:~ $ ifconfig
can0: flags=193<UP,RUNNING,NOARP> mtu 16
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 128 (UNSPEC)
RX packets 1282863 bytes 10257756 (9.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1749 bytes 10162 (9.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Klippy.log right after crash:
klippy(20).log (457.6 KB)
In my experience this is usually a wiring issue. With the printer powered off, make sure you have 60 ohms between H and L on the CAN bus wires. If your CAN wires aren’t twisted, I would suggest doing that as well.
Shouldn’t it be 120 Ohms? Everywhere I read it says 120. My EBB36 and CANable have jumper pins labeled “120 Ohm”, and I put the jumpers on both of them as I was instructed by several people. I measured the resistance between the lines, and it is 119.6 Ohms. Please clarify. I will attempt to twist the wires now.
Two 120 ohm resistors connected in parallel is 60 ohms. If you’re reading 120ohm, then one resistor is not connected.
Both jumpers are definitely in place, I double checked. Am I measuring it wrong maybe? I am placing my tester leads on the CAN_LOW and CAN_HIGH terminals on the CANable adapter.
Try disconnecting the wiring and measure the resistance on both boards. You should have 120 ohms on each board, and 60 ohms when the wiring is connected between them. And yes, you are measuring in the correct place. The resistance is measured between H and L.
It should be ~60Ohms. If it’s 120, then something isn’t in place.
Which version of CANable do you have? If it’s Version 1.0 or Pro, then you need to put in J4, If it’s 2.0, then the jumper needs to be on pins 1 & 2 of J2.
For your EBB36, if it’s Version 1.0, then you need to put a jumper on J3. If it’s Version 1.1, then you have to make sure the jumper is on JP1.
@jakep_82 has a good suggestion to disconnect your CAN bus cable and measure the pins on the CANable and the EBB36.
I wouldn’t recommend running the data rate at 1Mbps, I’m running multiple printers at 500kbps without issues. Remember that you have to rebuild the Klipper firmware for the EBB36 when you change the data rate.
Okay, clearly something was wrong there. The EBB36 was showing 0 Ohms when everything was disconnected. I replaced the jumper with a new one, and now it reports 120 Ohm as well. 60 Ohms between lines with everything connected. I guess my jumper was simply worn out.
I have also twisted the low/high cables, and after all these changes, I finally managed to get QGL from start to finish. I am going to attempt a long dry print overnight now, and if it fails, I will reflash EBB36 firmware with 500k baud and retry. Will keep you posted. And thank you for sticking out with me, guys. Really appreciate your patience.
For reference, I have CAN running at 1M on both of my Vorons. My Switchwire has an EBB42 on the toolhead (still running an old CW1 extruder), and before that it had a Huvud on it. I ran it at 500k for the first year with a Huvud 0.5, but when I upgraded to the 0.61 a year ago I found that 500k was insufficient to handle the bandwidth required for input shaper tuning with the new built in ADXL345. YMMV, but for me I’ve never completed shaper tuning at 500k and I’ve not had any real problems at 1M over the past year.
Good to know - I’ve never done shaper tuning.
Are you using the controller (I’m using CanBoot with the Octopus) or an USB to CAN adapter?
I’m using the MKS CANable (non-pro) on my V2.4, and a UCCB on my Switchwire. I was using an Octopus in bridge mode on the 2.4 for a while, but decided to standardize on the Manta M4P board and CB1 so I could sell all my Pis while the prices are absurd.
Manta M4P on a Voron 2.4? Aren’t you short by two stepper drivers for X/Y movement (I presume the four with the M4P are for the Z axis).
Why wouldn’t you go with an M8P?
If you read my earlier posts in this thread, you’ll see that I have Huvuds on my A and B motors. I have only 4 wires in my Z chain, and they connect to a CAN distribution PCB which distributes CAN and power to the 3 different CAN boards inside my chamber (SB2040 on the toolhead).
Okay, guys, after the last changes (fixing the 120 ohm jumper and twisting the wires), I still had one more shutdown. I was also asking about this issue on Voron discord, and guys there suggested that it’s actually a mistake not to connect the grounds of the PSUs. Apparently USB connection might not ground some devices enough. So on top of the changes and fixes we did, I restored the ground connections between PSUs and also grounded the CANable through the terminal next to the com lines. And it appears we finally solved the issue. I just ran three dry 5h prints, and then one actual print - not a single failure so far.
I am still not entirely sure what was the cause, but it feels like it was a combination of things, and everything had to be set up just right for the CAN to finally work reliably. I guess CAN is just a very sensitive device at this stage of it’s development, and any little thing can cause it to crash.
I can’t begin to thank you guys enough for the time and effort you spent to help me with this. You saved my printer.
To whoever reads this post later, this is the final setup that worked for me:
Wiring:
-Jumpers on 120 Ohm pins both on EBB36 and on CANable (check if you actually get 60 Ohm between CAN_LOW and CAN_HIGH lines)
-Twisted CAN_LOW and CAN_HIGH wires all the way from CANable to EBB36;
-18 AWG or thicker wires from +5V and -5V PSU to RPi 5V and GND pins. Ensure you are not getting undervoltage messages by entering SSH into the Pi, and running sudo dmesg.
/etc/network/interfaces.d/can0:
auto can0
iface can0 can static
bitrate 1000000
up ifconfig $IFACE txqueuelen 128
CANable firmware, if you are using a MKS clone like I did - the one @jakep_82 provided: https://klipper.discourse.group/t/issues-with-canable/7970/40?u=laukejas
That’s about it. Again, thanks to everyone who helped me figure this whole thing out. You guys are amazing.
Sorry, but something isn’t right here. The additional ground wires should not be required as you establish a common ground between devices with the USB connections. I just checked on one of my printers with an Octopus, BTT USBtoCAN board and separate rPi and verified that this true.
Could you do me a favour and disconnect the additional ground cables (ie restore the circuit to the one you drew two days ago) and check the resistance between -24V on the 24V PSU, -5V on the 5V PSU, GND on the CANable? With the USB cables in place, the resistance should (actually, must) be zero. If you disconnect the USB connectors, the resistances should go up to very high values.
CAN is actually a very mature and very robust communications medium when wired correctly. It’s been a standard in the automotive industry for about 30 years.
I’ve never used CANable, I’ve only worked with the USB2CAN boards as well as the CAN controllers built into the Octopus and Manta m8P boards, so I can’t comment on its operation but I’ve never had any issues like the ones you have been describing with my set ups.
I’d be interested in seeing images of your cable and how you’ve wired it as I wonder if there is a problem them (although CAN is very robust in different situations).
I tested what you requested. With current wiring, all resistances between grounds show as 0 Ohms, as expected. When I restore the original wiring, I get this:
Between -24V on the 24V PSU and -5V on the 5V PSU: 0.2Ω
Between -24V on the 24V PSU and GND on the RPi: 0 Ω
Between -5V on the 5V PSU and GND on the RPi: 0 Ω
Between -24V on the 24V PSU and GND on the CANable: 0 Ω
Between -5V on the 5V PSU and GND on the CANable: 0 Ω
Between -24V on the 24V PSU and GND on the CANable: 0 Ω
So everything should be as expected. And yet, I just tried to run the printer again with this wiring - it crashed again during QGL. Tried 5 times, all crashed. Restored the additional grounds - working without issues (so far). It is really puzzling.