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Duet3/pi DCS is unavailable after wiring 24V

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  • undefined
    Danal
    last edited by 24 Apr 2020, 13:12

    @bearer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

    [error] Failed to connect to Duet
    System.IO.IOException: Error 2. Can not open SPI device file '/dev/spidev0.0'.

    Can an error 2 on open happen because the device does not exist?

    Delta / Kossel printer fanatic

    ? undefined 2 Replies Last reply 24 Apr 2020, 13:13 Reply Quote 0
    • ?
      A Former User @Danal
      last edited by A Former User 24 Apr 2020, 13:13

      @Danal said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

      Can an error 2 on open happen because the device does not exist?

      that what happened on my Pi. (same with lacking permission).

      OP gets [error] Duet is not available which implies SPI is OK. (maybe there is room for making the two clearer as the first has nothing to do with the Duet as such, but still)

      1 Reply Last reply Reply Quote 0
      • undefined
        Danal
        last edited by 24 Apr 2020, 13:16

        I think I misread your post a couple up. You were pointing out the error that occurs if the device is missing. I read it as "op is getting this error". Now I see what you were saying vs what is happening on OP's Pi, and agree, the device is available. Sorry for the rabbit hole...

        Should OP still echo "options spidev bufsiz=8192" | sudo tee /etc/modprobe.d/spidev.conf

        I don't believe we have proof either way that is correct.

        Delta / Kossel printer fanatic

        ? 1 Reply Last reply 24 Apr 2020, 13:17 Reply Quote 0
        • ?
          A Former User @Danal
          last edited by 24 Apr 2020, 13:17

          @Danal said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

          Should OP still echo "options spidev bufsiz=8192" | sudo tee /etc/modprobe.d/spidev.conf

          you get a warning if that is missing. so no.

          1 Reply Last reply Reply Quote 0
          • undefined
            Danal
            last edited by 24 Apr 2020, 13:45

            Got it. Thanks!

            Delta / Kossel printer fanatic

            1 Reply Last reply Reply Quote 0
            • undefined
              Danal
              last edited by Danal 24 Apr 2020, 13:46

              @fractalengineer Line 4 I sort of expected. That is why we may need to bossa the board one more time. Maybe.

              Anyway, after we get everything in sync, future upgrades will take care of this and keep things in sync.

              Not finding /opt/dsf/sd/sys/Duet3Firmware_MB6HC.bin is a little concerning. Can you please:

              ls -al /opt/dsf
              ls -al /opt/dsf/sd
              ls -al /opt/dsf/sd/sys

              And post the results here?

              Delta / Kossel printer fanatic

              undefined 1 Reply Last reply 24 Apr 2020, 13:57 Reply Quote 0
              • undefined
                fractalengineer @Danal
                last edited by 24 Apr 2020, 13:57

                @Danal Will do in the next hour

                I didn't know you meant on the pi command; I can probably get there through SSH but I woudn't know what to do from there; would you mind clarifying what you meant?

                Likewise, I did double, triple check the SPI was activated in the settings, even in @chrishamm 's image; it's on

                Railcore II ZL

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                • undefined
                  Danal
                  last edited by 24 Apr 2020, 14:04

                  From the things you posted before, it looks like you've been issuing commands on the Pi... in the same way you did those in the past, just copy paste the "ls" commands.

                  Delta / Kossel printer fanatic

                  1 Reply Last reply Reply Quote 0
                  • ?
                    A Former User
                    last edited by 24 Apr 2020, 14:15

                    Ultimately it doesn't matter; board is updated to RC9 and installing the latest unstable DSF should work as hes tried time and time again.

                    (Not having the correct firmware would only be a problem if the latest available apt packages aren't compatible)

                    undefined 1 Reply Last reply 24 Apr 2020, 14:19 Reply Quote 0
                    • undefined
                      Danal @A Former User
                      last edited by 24 Apr 2020, 14:19

                      @bearer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

                      Ultimately it doesn't matter; board is updated to RC9 and installing the latest unstable DSF should work as hes tried time and time again.

                      (Not having the correct firmware would only be a problem if the latest available apt packages aren't compatible)

                      Agreed... but... what should he do next?

                      Delta / Kossel printer fanatic

                      ? 1 Reply Last reply 24 Apr 2020, 14:34 Reply Quote 0
                      • ?
                        A Former User @Danal
                        last edited by A Former User 24 Apr 2020, 14:34

                        @Danal said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

                        what should he do next?

                        try the other pi he'll be borrowing any time now (and hope if the orignal Pi was damaged with the original Duet, the borrowed Pi didn't suffer the same fate).

                        following that I guess either call an exorcist or attempt to try another SPI slave (maybe there is a bit banged SPI slave for a Pi out there?)

                        1 Reply Last reply Reply Quote 0
                        • undefined
                          fractalengineer
                          last edited by fractalengineer 24 Apr 2020, 16:05

                          Ok guys I'm just absolutely confused; the RPi 4 that worked last time on the standard image SD card won't connect to Wifi with chris's image no matter if I redo the wpa supplicant file.

                          It is not a Pi4 hardware issue because it works just fine with my other SD card flashed with Octopi

                          I'm rebuilding an image from scratch following this guide again; don't know what else to do at this point.

                          Duetpi lite this time; as if it changed anything

                          I'll report back once I get the new image setup on the pi4 with wifi working and everything up do date

                          Thanks for the help

                          Railcore II ZL

                          1 Reply Last reply Reply Quote 0
                          • ?
                            A Former User
                            last edited by A Former User 24 Apr 2020, 16:11

                            Send me a message if you'd want a second pair of eyes on it. If you can connect the Pi to wired Ethernet and provide remote access (e.g. ngrok) I can take a stab at it.

                            prime suspect is missing country code in the config or somehow strange whitespace in the config preventing it from being parsed.

                            this was one of the more detailed guides I could find to share https://wiki.archlinux.org/index.php/wpa_supplicant

                            undefined 1 Reply Last reply 24 Apr 2020, 16:33 Reply Quote 1
                            • undefined
                              fractalengineer @A Former User
                              last edited by 24 Apr 2020, 16:33

                              @bearer thanks;

                              Well it's all fixed now with the new image...the wifi connection it is...Still unable to connect to DCS

                              On a separate pi...

                              On a new board...

                              Maybe we can try that pin by pin connection to double check the issue wasn't the ribbon?

                              I can go buy jumpers tomorrow; how many we need?

                              Railcore II ZL

                              ? 1 Reply Last reply 24 Apr 2020, 16:50 Reply Quote 0
                              • ?
                                A Former User @fractalengineer
                                last edited by 24 Apr 2020, 16:50

                                @fractalengineer said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

                                how many we need?

                                Minimum 9, but didn't you get a new cable?

                                undefined 1 Reply Last reply 24 Apr 2020, 16:52 Reply Quote 0
                                • undefined
                                  fractalengineer @A Former User
                                  last edited by 24 Apr 2020, 16:52

                                  @bearer no I think I got a refurb; there was only the board and SD card in it

                                  Railcore II ZL

                                  1 Reply Last reply Reply Quote 0
                                  • undefined
                                    chrishamm administrators @Danal
                                    last edited by chrishamm 24 Apr 2020, 17:21

                                    @Danal That error occurred because SPI wasn't enabled at that point, hence no /dev/spidev.0.0. It's always possible to define module options in /etc/modprobe.d, that doesn't require the driver(s) to be loaded.

                                    It must be the connection from the Pi to the Duet 3 (ribbon cable?). The SPI link uses pins 19-24 (see https://pinout.xyz/pinout/pin22_gpio25#) so I'd once more check continuity between these pins on both sides. The error you see in the log without any extra comment (more verbose in v2.1.0) means that no signal could be transferred over pin 22 (BCM25). DSF expects this pin to be high when it starts.

                                    Duet software engineer

                                    ? undefined 2 Replies Last reply 24 Apr 2020, 17:25 Reply Quote 1
                                    • ?
                                      A Former User @chrishamm
                                      last edited by 24 Apr 2020, 17:25

                                      @chrishamm said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

                                      It must be the connection from the Pi to the Duet 3

                                      of curiosity what does DCS say if it gets a response, but the wrong due to say wrong firmware or spi clock?

                                      1 Reply Last reply Reply Quote 0
                                      • undefined
                                        chrishamm administrators
                                        last edited by chrishamm 24 Apr 2020, 17:31

                                        It's also worth starting DCS with -l debug to see a few more details. If the SPI clock is too high, you usually see warnings about failed transfers and/or checksum errors.

                                        Duet software engineer

                                        ? 1 Reply Last reply 24 Apr 2020, 17:35 Reply Quote 1
                                        • ?
                                          A Former User @chrishamm
                                          last edited by A Former User 24 Apr 2020, 17:35

                                          @chrishamm said in Duet3/pi flashing Diag LED after wiring 24V DCS is unavailable:

                                          It's also worth starting DCS with -l debug to see a few more details. If the SPI clock is too high, you usually see warnings about failed transfers and/or checksum errors.

                                          -l debug shows the difference, no difference without it.

                                          #with 22 low
                                          pi@raspberrypi:~ $ /opt/dsf/bin/DuetControlServer -l debug
                                          [debug] Lost connection to Duet
                                             System.OperationCanceledException: Timeout while waiting for transfer ready pin ...
                                          [error] Duet is not available
                                          
                                          #with 22 high
                                          pi@raspberrypi:~ $ /opt/dsf/bin/DuetControlServer -l debug
                                          [debug] Lost connection to Duet
                                             System.OperationCanceledException: Board is not available (no header) ...
                                          [error] Duet is not available
                                          

                                          Maybe change the first to Duet is not ready?

                                          edit: sudo wasn't needed (at that point in starting up at least)
                                          edit2: whops, wasn't testing the latest version, error changed to fatal, but same string.

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