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    WiFi disconnect errors

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    • zlowredundefined
      zlowred
      last edited by

      Sure, will do. I wonder if there is anything of interest to you in the debug message showing when I do M552 S0 after such disconnect:

      WiFi: state: 5 -> 0 (0)
      WiFi: rm 0
      WiFi: pm close 7
      WiFi: tcp_pcb_purge: pcb->state == SYN_RCVD but tcp_listen_pcbs is NULL
      Wifi module is idle
      WiFi: tcp_pcb_purge: pcb->state == SYN_RCVD but tcp_listen_pcbs is NULL
      WiFi: tcp_pcb_purge: pcb->state == SYN_RCVD but tcp_listen_pcbs is NULL
      WiFi: del if0
      WiFi: usl
      WiFi: mode : null
      
      

      Not sure if these pcb->state checks are ok

      1 Reply Last reply Reply Quote 0
      • dc42undefined
        dc42 administrators
        last edited by

        Yes, those are interesting too, in particular the tcp_pcb_purge messages.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

        1 Reply Last reply Reply Quote 0
        • zlowredundefined
          zlowred
          last edited by

          I did additional M997 S1 and then reproduced disconnect once again, but it didn't result in any additional messages in the log.

          1 Reply Last reply Reply Quote 0
          • dc42undefined
            dc42 administrators
            last edited by

            There shouldn't be additional messages, but some of the messages should have additional detail.

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

            1 Reply Last reply Reply Quote 0
            • zlowredundefined
              zlowred
              last edited by

              I had to revert to 1.20beta6 for now because starting from 1.20beta7 it resets every now and then and I have lots of failed prints because of that. I'm still running the latest 1.20beta9 WiFi firmware though.

              1 Reply Last reply Reply Quote 0
              • JohnOCFIIundefined
                JohnOCFII
                last edited by

                @dc42:

                Please can anyone else who is still getting WiFi disconnections even though the RSSI is good do the following:

                1. Upgrade to the just-released DuetWiFiFirmware 1.20beta8 and DuetWiFiServer 1.20beta9…

                I'll upgrade tomorrow morning (US Central time) and start testing.

                John

                1 Reply Last reply Reply Quote 0
                • JohnOCFIIundefined
                  JohnOCFII
                  last edited by

                  OK - Firmware updated, WiFi debugging turned on. We'll see what happens. Here's the startup debug so far:

                  [[language]]
                  Connecting...
                  RepRapFirmware for Duet WiFi Version 1.20beta8+1 dated 2017-11-18
                  Executing config.g...Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 594C.
                  HTTP is enabled on port 80
                  FTP is disabled
                  TELNET is disabled
                  Done!
                  RepRapFirmware for Duet WiFi is up and running.T:20.7 /0.0 B:20.1 /0.0
                  Printer is now online.
                  >>>M111 S1 P14
                  SENDING:M111 S1 P14
                  Debugging enabled for modules: WiFi(14)
                  Debugging disabled for modules: Platform(0) Network(1) Webserver(2) GCodes(3) Move(4) Heat(5) DDA(6) Roland(7) Scanner(8) PrintMonitor(9) Storage(10) PortControl(11) DuetExpansion(12) FilamentSensors(13)
                  >>>M552 S-1
                  SENDING:M552 S-1
                  WiFi module stopped
                  >>>M552 S1
                  SENDING:M552 S1
                  WiFi:
                  WiFi:  ets Jan  8 2013,rst cause:2, boot mode:(3,7)
                  WiFi:
                  WiFi: load 0x4010f000, len 1384, room 16
                  WiFi: tail 8
                  WiFi: chksum 0x2d
                  WiFi: csum 0x2d
                  WiFi: v00007fff
                  WiFi: ~ld
                  WiFi module started
                  WiFi: mode : sta(a0:20:a6:16:eb:66)
                  WiFi: add if0
                  WiFi: scandone
                  WiFi: sleep enable,type: 2
                  WiFi: scandone
                  WiFi: state: 0 -> 2 (b0)
                  WiFi: state: 2 -> 3 (0)
                  WiFi: state: 3 -> 5 (10)
                  WiFi: add 0
                  WiFi: aid 7
                  WiFi: cnt
                  WiFi:
                  WiFi: connected with Aloha, channel 7
                  WiFi: dhcp client start...
                  Wifi module is connected to access point Aloha, IP address 192.168.62.118
                  WiFi: ip:192.168.62.118,mask:255.255.255.0,gw:192.168.62.1
                  WiFi: pm open,type:2 0
                  WiFi: p->ref == 1
                  WiFi: p->ref == 1
                  
                  
                  1 Reply Last reply Reply Quote 0
                  • JohnOCFIIundefined
                    JohnOCFII
                    last edited by

                    Ok - just finished a two hour print without disconnects. I am seeing many of the WiFi: p->ref == 1 messages. I also added an M122 diagnostic at the end.

                    Here's the full log so far. I'll keep the machine on.

                    [[language]]
                    Connecting...
                    RepRapFirmware for Duet WiFi Version 1.20beta8+1 dated 2017-11-18
                    Executing config.g...Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 594C.
                    HTTP is enabled on port 80
                    FTP is disabled
                    TELNET is disabled
                    Done!
                    RepRapFirmware for Duet WiFi is up and running.T:20.7 /0.0 B:20.1 /0.0
                    Printer is now online.
                    >>>M111 S1 P14
                    SENDING:M111 S1 P14
                    Debugging enabled for modules: WiFi(14)
                    Debugging disabled for modules: Platform(0) Network(1) Webserver(2) GCodes(3) Move(4) Heat(5) DDA(6) Roland(7) Scanner(8) PrintMonitor(9) Storage(10) PortControl(11) DuetExpansion(12) FilamentSensors(13)
                    >>>M552 S-1
                    SENDING:M552 S-1
                    WiFi module stopped
                    >>>M552 S1
                    SENDING:M552 S1
                    WiFi:
                    WiFi:  ets Jan  8 2013,rst cause:2, boot mode:(3,7)
                    WiFi:
                    WiFi: load 0x4010f000, len 1384, room 16
                    WiFi: tail 8
                    WiFi: chksum 0x2d
                    WiFi: csum 0x2d
                    WiFi: v00007fff
                    WiFi: ~ld
                    WiFi module started
                    WiFi: mode : sta(a0:20:a6:16:eb:66)
                    WiFi: add if0
                    WiFi: scandone
                    WiFi: sleep enable,type: 2
                    WiFi: scandone
                    WiFi: state: 0 -> 2 (b0)
                    WiFi: state: 2 -> 3 (0)
                    WiFi: state: 3 -> 5 (10)
                    WiFi: add 0
                    WiFi: aid 7
                    WiFi: cnt
                    WiFi:
                    WiFi: connected with Aloha, channel 7
                    WiFi: dhcp client start...
                    Wifi module is connected to access point Aloha, IP address 192.168.62.118
                    WiFi: ip:192.168.62.118,mask:255.255.255.0,gw:192.168.62.1
                    WiFi: pm open,type:2 0
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    Calibrated 6 factors using 10 points, deviation before 0.213 after 0.036
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    Done printing fileFinished printing file Models/JoelBot_Repaired_70p_KMR3.gcode, print time was 2h 18m
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    WiFi: p->ref == 1
                    >>>M122
                    SENDING:M122
                    === Diagnostics ===
                    Used output buffers: 3 of 32 (9 max)
                    === Platform ===
                    RepRapFirmware for Duet WiFi version 1.20beta8+1 running on Duet WiFi 1.0
                    Board ID: 08DAM-999TL-MQ4S8-6JKDJ-3SJ6K-16BVW
                    Static ram used: 15488
                    Dynamic ram used: 99336
                    Recycled dynamiWiFi:
                    c ram: 3960
                    Stack ram used: 4328 current, 9428 maximum
                    Never used ram: 2860
                    Last reset 02:39:14 ago, cause: power up
                    Last software reset reason: User, spinning module GCodes, available RAM 3192 bytes (slot 1)
                    Software reset code 0x0003, HFSR 0x00000000, CFWiFi: LINK
                    SR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0WiFi: 	xmit: 0
                    xffffffff
                    Error status: 0
                    Free file entries: 10
                    SD card 0 detected, interface speed: 20.0MBytes/sec
                    SD card longest block write time: 543.3ms
                    MCU temperature: min 29.3, current 38.3, max 41.0
                    Supply voltWiFi: 	recv: 0
                    age: min 0.6, current 12.3, max 12.5, under voltage events: 0, over voltage events: 0
                    DWiFi: 	fw: 0
                    river 0: standstill
                    Driver 1: standstill
                    Driver 2: standstill
                    Driver 3: standstill
                    Driver 4: standstill
                    Date/time: 2017-11-19 11:59:58
                    Cache data hit count 4294967295
                    SlWiFi: 	drop: 0
                    owest main loop (seconds): 0.544757; fastest: 0.000033
                    === Move ===
                    MaxReps: 6, StepErrors: 0, FreeDm: 240, MinFreeDm 120, WiFi: 	chkerr: 0
                    MaxWait: 1524274909ms, Underruns: 0, 0
                    Scheduled moves: 0, completed moves: 0
                    Bed compensation in use: none
                    Bed probe heights: 0.300 WiFi: 	lenerr: 0
                    0.175 0.153 0.075 0.295
                    === Heat ===
                    Bed heater = 0, chamber heater = -1
                    Heater 0 is on, I-accum = 0.0
                    Heater 1 is on, I-accum = 0.7
                    === GCodes ===
                    SegmeWiFi: 	memerr: 0
                    nts left: 0
                    Stack records: 1 allocated, 0 in use
                    Movement lock held by null
                    http is idle in state(s) 0
                    WiFi: 	rterr: 0
                    telnet is idle in state(s) 0
                    file is idle in state(s) 0
                    serial is ready with "M122" in state(s) 0
                    aux is idle in state(s) 0
                    daemon is idle in state(s) 0
                    queue is idle in state(s) 0
                    autWiFi: 	proterr: 0
                    opause is idle in state(s) 0
                    Code queue is empty.
                    Network state is runniWiFi: 	opterr: 0
                    ng
                    WiFi module is connected to access point
                    Failed messages: pending 0, notready 0, noresp 0
                    WiFi firmware version 1.20b9
                    WiFi MAC address a0:20:a6:16:eb:66
                    WiFi Vcc 3.37, reset reason Turned on by main processorWiFi: 	err: 0
                    WiFi flash size 4194304, free heap 27640
                    WWiFi: 	cachehit: 0
                    iFi IP address 192.168.62.118
                    WiFi signal strength -58dBm, reconnections 0, sleep mode modem
                    HTTP sessions: 2 of 8
                    Socket states:  0 0 0 0 0 0 0 0
                    Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
                    WiFi:
                    WiFi: ETHARP
                    WiFi: 	xmit: 4
                    WiFi: 	recv: 1203
                    WiFi: 	fw: 0
                    WiFi: 	drop: 6803
                    WiFi: 	chkerr: 0
                    WiFi: 	lenerr: 0
                    WiFi: 	memerr: 0
                    WiFi: 	rterr: 0
                    WiFi: 	proterr: 6803
                    WiFi: 	opterr: 0
                    WiFi: 	err: 0
                    WiFi: 	cachehit: 40018
                    WiFi:
                    WiFi: IP
                    WiFi: 	xmit: 40128
                    WiFi: 	recv: 6877
                    WiFi: 	fw: 0
                    WiFi: 	drop: 0
                    WiFi: 	chkerr: 0
                    WiFi: 	lenerr: 0
                    WiFi: 	memerr: 0
                    WiFi: 	rterr: 0
                    WiFi: 	proterr: 0
                    WiFi: 	opterr: 0
                    WiFi: 	err: 0
                    WiFi: 	cachehit: 0
                    WiFi:
                    WiFi: IGMP
                    WiFi: 	xmit: 2
                    WiFi: 	recv: 94
                    WiFi: 	drop: 0
                    WiFi: 	chkerr: 0
                    WiFi: 	lenerr: 0
                    WiFi: 	memerr: 0
                    WiFi: 	proterr: 0
                    WiFi: 	rx_v1: 0
                    WiFi: 	rx_group: 0
                    WiFi: rx_genert 62171
                    WiFi: 	recv: 62198
                    WiFi: 	fw: 0
                    WiFi: 	drop: 0
                    WiFi: 	chkerr: 0
                    WiFi: 	lenerr: 0
                    WiFi: 	memerr: 0
                    WiFi: 	rterr: 0
                    WiFi: 	proterr: 0
                    WiFi: 	opterr: 0
                    WiFi: 	err: 0
                    WiFi: 	cachehit: 0
                    
                    
                    1 Reply Last reply Reply Quote 0
                    • JohnOCFIIundefined
                      JohnOCFII
                      last edited by

                      The printer has been sitting idle since the last post (about 43 minutes).

                      • I just had a disconnect.

                      • I was not able to re-connect from DWC.

                      • I am not able to ping the printer

                      • Router is an ASUS RT-N66R running the Asus-Merlin firmware 380_68.4

                      Latest log from the still USB connected computer is below:

                      [[language]]
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      WiFi: p->ref == 1
                      >>>M122
                      SENDING:M122
                      === Diagnostics ===
                      Used output buffers: 3 of 32 (11 max)
                      === Platform ===
                      RepRapFirmware for Duet WiFi version 1.20beta8+1 running on Duet WiFi 1.0
                      Board ID: 08DAM-999TL-MQ4S8-6JKDJ-3SJ6K-16BVW
                      Static ram used: 15488
                      Dynamic ram used: 99336
                      Recycled dynamWiFi:
                      ic ram: 3960
                      Stack ram used: 4328 current, 9428 maximum
                      NWiFi: LINK
                      ever used ram: 2860
                      Last reset 03:22:04 ago, cause: power up
                      Last software reset reason: User, spinning module GCodes, available RAM 3192 bytes (slot 1)
                      Software reset code 0x0003, HFSR 0x00000000, CWiFi: 	xmit: 0
                      FSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
                      Error status: 0
                      Free file entriWiFi: 	recv: 0
                      es: 10
                      SD card 0 detected, interface speed: 20.0MBytes/sec
                      SD card longest block write time: 0.0ms
                      MCU temperature: min 34.2, current 34.4, max 38.7
                      Supply voltaWiFi: 	fw: 0
                      ge: min 12.2, current 12.3, max 12.5, under voltage events: 0, over voltage events: 0
                      Driver 0: standstill
                      Driver 1: standstill
                      DriWiFi: 	drop: 0
                      ver 2: standstill
                      Driver 3: standstill
                      Driver 4: standstill
                      Date/time: 2017-11-19 12:42:48
                      Cache data hit count 4294967295
                      SlWiFi: 	chkerr: 0
                      owest main loop (seconds): 0.116336; fastest: 0.000112
                      === Move ===
                      MaxReps: 0, StepErrors: 0, FreeDm: 240, MinFreeDm 240, MaxWait: 0ms, Underruns: 0, 0
                      Scheduled WiFi: 	lenerr: 0
                      moves: 0, completed moves: 0
                      Bed compensation in use: none
                      Bed probe heights: 0.300 0.175 0.1WiFi: 	memerr: 0
                      53 0.075 0.295
                      === Heat ===
                      Bed heater = 0, chamber heater = -1
                      Heater 0 is on, I-accum = 0.0
                      Heater 1 is on, I-accum = 0.7
                      === GCodes ===
                      Segments left: 0
                      Stack records: 1 allocated, 0 in use
                      Movement lock held by null
                      http is idle in state(s) 0
                      telnet isWiFi: 	rterr: 0
                       idle in state(s) 0
                      file is idle in state(s) 0
                      sWiFi: 	proterr: 0
                      erial is ready with "M122" in state(s) 0
                      aux is idle in state(s) 0
                      daemon is idle in state(s) 0
                      queue is idle in state(s) 0
                      autopause is idle in state(s) 0
                      Code queue is empty.
                      Network state is running
                      WiFi mWiFi: 	opterr: 0
                      odule is connected to access point
                      Failed messages: pending 0, notready 0, nWiFi: 	err: 0
                      oresp 0
                      WiFi firmware version 1.20b9
                      WiFi MAC address a0:20:a6:16:eb:66
                      WiFi Vcc 3.38, reset reason Turned on by main processor
                      WiFi flash size 4194304, free heap 28584
                      WiFi IP adWiFi: 	cachehit: 0
                      dress 192.168.62.118
                      WiFi signal strength -59dBm, reconnections 0, sleep mode modem
                      HTTP sessions: 2 of 8
                      SoWiFi:
                      cket states:  0 0 0 0 0 0 0 0
                      Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
                      WiFi: ETHARP
                      WiFi: 	xmit: 4
                      WiFi: 	recv: 2331
                      WiFi: 	fw: 0
                      WiFi: 	drop: 8472
                      WiFi: 	chkerr: 0
                      WiFi: 	lenerr: 0
                      WiFi: 	memerr: 0
                      WiFi: 	rterr: 0
                      WiFi: 	proterr: 8472
                      WiFi: 	opterr: 0
                      WiFi: 	err: 0
                      WiFi: 	cachehit: 61640
                      WiFi:
                      WiFi: IP
                      WiFi: 	xmit: 61750
                      WiFi: 	recv: 36768
                      WiFi: 	fw: 0
                      WiFi: 	drop: 0
                      WiFi: 	chkerr: 0
                      WiFi: 	lenerr: 0
                      WiFi: 	memerr: 0
                      WiFi: 	rterr: 0
                      WiFi: 	proterr: 0
                      WiFi: 	opterr: 0
                      WiFi: 	err: 0
                      WiFi: 	cachehit: 0
                      WiFi:
                      WiFi: IGMP
                      WiFi: 	xmit: 2
                      WiFi: 	recv: 106
                      WiFi: 	drop: 0
                      WiFi: 	chkerr: 0
                      WiFi: 	lenerr: 0
                      WiFi: 	memerr: 0
                      WiFi: 	proterr: 0
                      WiFi: 	rx_v1: 0
                      WiFi: 	rx_group: 0
                      WiFi: rx_gent: 10141
                      WiFi: 	recv: 23497
                      WiFi: 	fw: 0
                      WiFi: 	drop: 0
                      WiFi: 	chkerr: 0
                      WiFi: 	lenerr: 0
                      WiFi: 	memerr: 0
                      WiFi: 	rterr: 0
                      WiFi: 	proterr: 0
                      WiFi: 	opterr: 0
                      WiFi: 	err: 0
                      WiFi: 	cachehit: 0
                      
                      
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                      • JohnOCFIIundefined
                        JohnOCFII
                        last edited by

                        Interestingly, after posting the entry above, the following happened in the still running log, which did allow me to reconnect from DWC:

                        [[language]]
                        
                        WiFi: state: 5 -> 2 (10c0)
                        WiFi: rm 0
                        WiFi: pm close 7
                        WiFi reported error: Lost connection, auto reconnecting
                        WiFi: reconnect
                        WiFi: state: 2 -> 0 (0)
                        WiFi: scandone
                        WiFi: state: 0 -> 2 (b0)
                        WiFi: state: 2 -> 3 (0)
                        WiFi: state: 3 -> 5 (10)
                        WiFi: add 0
                        WiFi: aid 7
                        WiFi: cnt
                        WiFi:
                        WiFi: connected with Aloha, channel 7
                        WiFi: dhcp client start...
                        WiFi reported error: Auto reconnect succeeded
                        WiFi: ip:192.168.62.118,mask:255.255.255.0,gw:192.168.62.1
                        WiFi: pm open,type:2 0
                        
                        
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                        • dc42undefined
                          dc42 administrators
                          last edited by

                          Thanks for that. The p->ref==1 definitely indicates an error. I've spotted a patch that someone made to lwip 1.4 for the ESP8266, and that patch isn't in any of the official sources, so I'm beginning to suspect it. It's strange that I never see those messages.

                          The latest log entry you posted indicates the WiFi connection was lost but the auto reconnection done by the WiFi SDK succeeded. That's the first time I've seen evidence of that working.

                          Duet WiFi hardware designer and firmware engineer
                          Please do not ask me for Duet support via PM or email, use the forum
                          http://www.escher3d.com, https://miscsolutions.wordpress.com

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                          • k3lagundefined
                            k3lag
                            last edited by

                            I don't have any log data for you but I have some interesting other data.

                            I had been having numerous Ajax time outs and most of the time I couldn't reconnect but occasionally I could. I had a strong signal with RSSI values from -38 to -40. My network was made up of two Apple Airport Extreme (the latest version) access points. One as my router and the 2nd extending the network to my basement where my printer is. Sometimes the printer would connect to the access point two floors away instead of the one 6 feet from the printer. Also, since the Airport Extremes don't have a dedicated radio to extend the network the performance wasn't as good as it could be with some of the new tri-band routers.

                            Yesterday, I replaced the Airport Extremes with a 3 node Netgear Orbi setup. The Orbi remote closest to the printer is in the same location as that the 2nd Airport Express was. There is also an additional Orbi remote one floor up and the primary Orbi Router is two floors up from where the printer is. The connection has been rock solid with this setup for about 24 hours now. I've had a few disconnects related to the laptop going to sleep or such, but that is to be expected. I can always immediately reconnect when I need to. I have had no disconnects when I wouldn't expect them.

                            I'm also finding the my wireless performance better overall.

                            I think at least one other person has mentioned that they use an Apple router. It would be interesting to see if there is any correlation between what routers people use and the disconnects.

                            Of course, if this patch you just found fixes it, I guess it won't matter. 🙂

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                            • MiRundefined
                              MiR
                              last edited by

                              I have good WiFi connectivity, RSSI -43dBm, Broadcom chipset based router. Have upgraded to latest firmware and beta9 server, could do two small prints of 30 minutes without issue, this morning I could not reconnect. Unfortunately i accidentally turned off the pc i used for usb logging, will retry tonight.

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                              • tomasfundefined
                                tomasf
                                last edited by

                                @k3lag:

                                I think at least one other person has mentioned that they use an Apple router. It would be interesting to see if there is any correlation between what routers people use and the disconnects.

                                I've had various problems with Duets and WiFi for a long time, and I'm also using an AirPort Extreme. It mostly works fine nowadays, but I'm still having problems from time to time. I recently updated to 1.20b, but it's too early to determine whether that has made a difference.

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                                • zlowredundefined
                                  zlowred
                                  last edited by

                                  I've replaced my Apple router with Google WiFi today, and it still disconnects, so I don't think it is related to particular router model.

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                                  • k3lagundefined
                                    k3lag
                                    last edited by

                                    @zlowred:

                                    I've replaced my Apple router with Google WiFi today, and it still disconnects, so I don't think it is related to particular router model.

                                    If it is router related I wouldn't necessarily expect it be limited to a single brand but it could be related to a particular WiFi chipset or chipset family. It's hard to say without a fair bit of data.

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                                    • KeeganBundefined
                                      KeeganB
                                      last edited by

                                      I haven't updated to the newer firmwares yet b/c this current setup has been working so well for me compared to really horrible results previously. BUT over the past few days I have started getting some disconnects an also getting locked out. It is still really good compared the past, with only probably 4-5 disconnects over the past 3 days. Here is my latest M122 immediately following a disconnect. I will upgrade the firmwares after this current print.

                                      SENDING:M122
                                      === Diagnostics ===
                                      Used output buffers: 2 of 32 (11 max)
                                      === Platform ===
                                      RepRapFirmware for Duet WiFi version 1.20beta7 running on Duet WiFi 1.0
                                      Board ID: 08DDM-9FAM2-LW4SD-6JTF0-3S86N-TLWZX
                                      Static ram used: 15472
                                      Dynamic ram used: 99192
                                      Recycled dynamic ram: 4120
                                      Stack ram used: 3992 current, 9144 maximum
                                      Never used ram: 3144
                                      Last reset 04:34:43 ago, cause: power up
                                      Last software reset reason: User, spinning module GCodes, available RAM 7296 bytes (slot 3)
                                      Software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
                                      Error status: 0
                                      [ERROR] Error status: 0
                                      
                                      Free file entries: 9
                                      SD card 0 detected, interface speed: 20.0MBytes/sec
                                      SD card longest block write time: 42.8ms
                                      MCU temperature: min 23.3, current 35.1, max 36.0
                                      Supply voltage: min 12.2, current 12.6, max 12.9, under voltage events: 0, over voltage events: 0
                                      Driver 0: ok
                                      Driver 1: ok
                                      Driver 2: open-load-B
                                      Driver 3: ok
                                      Driver 4: standstill
                                      Date/time: 2017-11-20 22:00:32
                                      Cache data hit count 4294967295
                                      Slowest main loop (seconds): 0.080215; fastest: 0.000041
                                      === Move ===
                                      MaxReps: 5, StepErrors: 0, FreeDm: 136, MinFreeDm 120, MaxWait: 2289273250ms, Underruns: 0, 0
                                      Scheduled moves: 221848, completed moves: 221818
                                      Bed compensation in use: none
                                      Bed probe heights: -0.162 -0.151 -0.081 -0.058 -0.041
                                      === Heat ===
                                      Bed heater = 0, chamber heater = -1
                                      Heater 0 is on, I-accum = 0.3
                                      Heater 1 is on, I-accum = 0.5
                                      === GCodes ===
                                      Segments left: 1
                                      Stack records: 2 allocated, 0 in use
                                      Movement lock held by file
                                      http is idle in state(s) 0
                                      telnet is idle in state(s) 0
                                      file is doing "G1 X0.401 Y8.421 E0.0067" in state(s) 0
                                      serial is ready with "M122" in state(s) 0
                                      aux is idle in state(s) 0
                                      daemon is idle in state(s) 0
                                      queue is idle in state(s) 0
                                      autopause is idle in state(s) 0
                                      Code queue is empty.
                                      Network state is running
                                      WiFi module is connected to access point
                                      Failed messages: pending 0, notready 0, noresp 0
                                      WiFi firmware version 1.20b8-nosleep
                                      WiFi MAC address 5c:cf:7f:ef:51:6f
                                      WiFi Vcc 3.38, reset reason Turned on by main processor
                                      WiFi flash size 4194304, free heap 29144
                                      WiFi IP address 10.0.1.161
                                      WiFi signal strength -37dBm, reconnections 4, sleep mode none
                                      HTTP sessions: 1 of 8
                                      Socket states:  0 0 0 0 0 0 0 0
                                      Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
                                      
                                      

                                      Artemis
                                      Rostock Max v2
                                      Orion

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                                      • dc42undefined
                                        dc42 administrators
                                        last edited by

                                        It's interesting to see that you had 4 successful reconnections.

                                        Duet WiFi hardware designer and firmware engineer
                                        Please do not ask me for Duet support via PM or email, use the forum
                                        http://www.escher3d.com, https://miscsolutions.wordpress.com

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                                        • k3lagundefined
                                          k3lag
                                          last edited by

                                          I've now been on my new WiFi network for 3 days and I have had no unexpected disconnects. I can reconnect immediately after any expected disconnects (laptop goes to sleep or I close my iPad) and the response is very quick.

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                                          • ukflyerundefined
                                            ukflyer
                                            last edited by

                                            Been following this thread for a while now.

                                            What is the current consensus for stable WiFi ?

                                            I have updated to the latest stable firmware and server releases. My printer is 300mm from the WiFi router and there are no other WiFi networks available and yet the network connection is currently dropping within seconds of starting the printer up.

                                            I have managed to start one print in the last 2 days before the WiFi connection dropped and that ran to completion so it can only be an issue with the WiFi module.

                                            Really beginning to wish I had paid the extra for an ethernet electronics board 😞

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