ModalAI Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    LTE Modem "Feather is Disabled"

    Cellular Modems
    2
    19
    1029
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • S
      scottesicdrone
      last edited by

      Here is my voxl-modem.conf file:

      {
      	"modem_type":	"v1",
      	"apn":	"broadband",
      	"world":	"false",
      	"microhard_ip": "192.168.168.100",
      	"modallink":	"false",
      	"placeholder": "hello world"
      }
      

      I'm watching the service right now and here is where it is at currently

      ● voxl-modem.service - Modem Initialization
         Loaded: loaded (/etc/systemd/system/voxl-modem.service; enabled; vendor preset: enabled)
         Active: active (running) since Thu 1970-01-01 00:01:23 UTC; 51 years 3 months ago
        Process: 2129 ExecStartPre=/bin/sleep 2 (code=exited, status=0/SUCCESS)
       Main PID: 2853 (voxl-modem-star)
         CGroup: /system.slice/voxl-modem.service
                 ├─2853 /bin/bash /usr/bin/voxl-modem-start.sh
                 └─3364 /usr/bin/python /usr/bin/voxl-modem --connect_to_network
      
      Apr 02 17:13:49 apq8096 voxl-modem-start.sh[2853]: Setting network preference to LTE
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Failed to open device
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Finished setting network preference
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Disabling band 5...
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: configband starting
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Band mask 1 to 32: 0x0000080a 0x0a 0x08 0x00 0x00
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Band mask 33 to 64: 0x00000000 0x00 0x00 0x00 0x00
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Band mask 65 to 96: 0x00000000 0x00 0x00 0x00 0x00
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Error opening /dev/ttyUSB0: No such file or directory
      Apr 02 17:13:59 apq8096 voxl-modem-start.sh[2853]: Initalizing cellular connection...
      
      
      1 Reply Last reply Reply Quote 0
      • tomT
        tom admin
        last edited by

        @scottesicdrone Okay let's have you go through the steps manually to see if it's a timing issue.

        First, disable the voxl-modem service -> systemctl disable voxl-modem and reboot.

        Now, run the following:

        voxl-modem --feather_configure -> this should bring up /dev/qcqmi0 and /dev/ttyUSB0, make sure these exist before proceeding

        Next, run:

        uqmi -P -d /dev/qcqmi0 --set-network-preference lte

        then

        configband write /dev/ttyUSB0 0x80a

        Lastly, run

        voxl-modem --conect_to_network

        1 Reply Last reply Reply Quote 0
        • S
          scottesicdrone
          last edited by

          I disabled the service and ran voxl-modem --feather_configure and got this:

          Configuring GPIO pins
              Setting defaults:
                  GPIO_PIN_WWAN_WAKEUP_IN  = 1
                  GPIO_PIN_WWAN_POWER_ON_N = 1
                  GPIO_PIN_WWAN_RESET_N    = 1
              feather is DISABLED
          ENABLE WNC feather module
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
          WARNING: feather state transtion failed.
             enable failed, try again 0 retries remaining
          ENABLE WNC feather module
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
              feather is DISABLED
          WARNING: feather state transtion failed.
             enable failed, try again 1 retries remaining
          ENABLE WNC feather module
              feather is DISABLED
              feather is DISABLED
          

          And this will keep going if I let it, I'm pretty sure. In the /dev folder, /dev/qcqmi0 exists but /dev/ttyUSB0 doesn't exist.

          1 Reply Last reply Reply Quote 0
          • tomT
            tom admin
            last edited by

            @scottesicdrone Thanks for the info, I will look into this behavior in order to get a solution for you

            1 Reply Last reply Reply Quote 0
            • S
              scottesicdrone
              last edited by

              Thanks, Tom, for the help! I really appreciate it! Is it possible that the serial port and the ports got renamed from /dev/ttyACM0 and /dev/ttyUSB0? I'm not too familiar with how these devices are generated or normal behavior for these devices. We have also noticed that this happened on two different VOXLs with the same v1 modem, so this problem seems to be with the modem and not the VOXL (though this is not something I am 100% certain about).

              1 Reply Last reply Reply Quote 0
              • tomT
                tom admin
                last edited by

                @scottesicdrone I'm leaning toward it being a hardware issue with your modem. Did anything hardware related change from when it was working and wasn't working? Do you have any other v1 modems you can test with?

                1 Reply Last reply Reply Quote 0
                • S
                  scottesicdrone
                  last edited by

                  Nothing physically changed that I can recall, and unfortunately, we don't have extra modems though we ordered more modems. Last potential useful bit of info: when I ran dmesg, I saw errors relating to qmi pop up but I don't know what to make of them:

                  yocto:/# dmesg | grep "qmi"
                  [    1.186410] usbcore: registered new interface driver qmi_wwan
                  [    1.187419] msm_sharedmem: sharedmem_register_qmi: qmi init successful
                  [    5.741357] sysmon_send_event_no_qmi: Message sending failed -19
                  [    5.890086] type=1130 audit(7.556:61): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0-s15:c0.c1023 msg='unit=qmi_shutdown_modemd comm="systemd" exe="/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
                  [    5.903844] sysmon_send_event_no_qmi: Message sending failed -19
                  [    5.903850] sysmon_send_event_no_qmi: Message sending failed -19
                  [    5.908564] sysmon-qmi: sysmon_clnt_svc_arrive: Connection established between QMI handle and slpi's SSCTL service
                  [    5.914578] sysmon_send_event_no_qmi: Message sending failed -19
                  [    6.039513] sysmon-qmi: sysmon_clnt_svc_arrive: Connection established between QMI handle and adsp's SSCTL service
                  [    6.523379] sysmon-qmi: sysmon_clnt_svc_arrive: Connection established between QMI handle and modem's SSCTL service
                  [    6.543970] msm_slim_qmi_send_power_request: QMI request failed 0x1 (Unknown error)
                  [    7.045169] msm_slim_qmi_send_power_request: QMI request failed 0x1 (Unknown error)
                  [    7.546548] msm_slim_qmi_send_power_request: QMI request failed 0x1 (Unknown error)
                  [    8.049225] msm_slim_qmi_send_power_request: QMI request failed 0x1 (Unknown error)
                  
                  
                  1 Reply Last reply Reply Quote 0
                  • tomT
                    tom admin
                    last edited by

                    Can you also run voxl-version so I can see what system image / package version you're using.

                    1 Reply Last reply Reply Quote 0
                    • S
                      scottesicdrone
                      last edited by

                      Here is what I get when I run voxl-version:

                      yocto:/# voxl-version
                      --------------------------------------------------------------------------------
                      system-image:    ModalAI 3.1.0 BUILDER: ekatzfey BUILD_TIME: 2020-12-23_19:41
                      kernel:          #1 SMP PREEMPT Wed Dec 23 19:50:23 UTC 2020 3.18.71-perf
                      factory-bundle:  1.0.1 (Yocto installation)
                      --------------------------------------------------------------------------------
                      architecture:    aarch64
                      processor:       apq8096
                      os:              GNU/Linux
                      --------------------------------------------------------------------------------
                      voxl-suite:
                      Package: voxl-suite
                      Version: 0.3.4
                      Depends: voxl-utils (>= 0.6.0), libmodal_json (>= 0.3.4), libmodal_pipe (>= 1.7.8), librc_math (>= 1.1.4), libvoxl_io (>= 0.5.4), mavlink-camera-manager (>= 0.0.1), opencv (>= 4.5.1), openmp (>= 10.0.1), voxl-camera-server (>= 0.5.6), voxl-dfs-server (>= 0.0.7), voxl-docker-support (>= 1.1.1), voxl-gphoto2 (>= 0.0.5), voxl-hal3-tof-cam-ros (>= 0.0.5), voxl-imu-server (>= 0.7.8), voxl-modem (>= 0.11.0), voxl-mpa-tflite-server (>= 0.0.2), voxl-mpa-tools (>= 0.1.6), voxl-nodes (>= 0.1.3), voxl-qvio-server (>= 0.2.1), voxl-rtsp (>= 1.0.3), voxl-streamer (>= 0.2.1), voxl-vision-px4 (>= 0.8.1), voxl-vpn (>= 0.0.3)
                      Status: unknown ok not-installed
                      Section: base
                      Architecture: all
                      Maintainer: james@modalai.com
                      MD5Sum: e1e5bf1a125affe5036099f6ce895bed
                      Size: 1818
                      Filename: voxl-suite_0.3.4.ipk
                      Description: meta-package for voxl-suite stable release
                      
                      Package: voxl-suite
                      Version: 0.2.0
                      Depends: docker, imu_app (= 0.0.6), libvoxl_io (= 0.5.2), voxl-cam-manager (= 0.2.2), voxl-docker-support (= 1.1.1), voxl-hal3-tof-cam-ros (= 0.0.2), voxl-modem (= 0.10.0), voxl-nodes (= 0.0.8), voxl-rtsp (= 1.0.2), voxl-utils (= 0.5.2), voxl-vision-px4 (= 0.6.8), voxl_imu (= 0.0.4), voxl-time-sync (= 0.0.1), voxl-vpn (= 0.0.2), librc_math (= 1.1.2), libmodal_pipe (= 1.2.2), modalai-vl (= 0.1.3)
                      Status: install user installed
                      Section: base
                      Architecture: armv7a
                      Maintainer: james@modalai.com
                      MD5Sum: af706cd3c1ea59f274f2ed9b93141f1d
                      Size: 870
                      Filename: voxl-suite_0.2.0.ipk
                      Description: meta-package to install all of the voxl-suite
                      Installed-Time: 689
                      
                      --------------------------------------------------------------------------------
                      
                      
                      1 Reply Last reply Reply Quote 0
                      • tomT
                        tom admin
                        last edited by

                        Just to show you what a working modem would look like:

                        / # voxl-modem --feather_configure
                        Configuring GPIO pins
                            Setting defaults:
                                GPIO_PIN_WWAN_WAKEUP_IN  = 1
                                GPIO_PIN_WWAN_POWER_ON_N = 1
                                GPIO_PIN_WWAN_RESET_N    = 1
                            feather is DISABLED
                        ENABLE WNC feather module
                            feather is DISABLED
                            feather is DISABLED
                            feather is DISABLED
                            feather is ENABLED, device detected: /dev/ttyUSB0
                        

                        It comes up within a few seconds. Good thought about qmi / dmesg, those errors will go away once the modem is powered up correctly by voxl-modem

                        1 Reply Last reply Reply Quote 0
                        • S
                          scottesicdrone
                          last edited by

                          This makes a lot of sense. I have seen this working before but now it just says feather is DISABLED until it power cycles and repeats. So if I understand correctly, after a few seconds, /dev/ttyUSB0 will be created and then the feather is enabled? Also random question: what is a feather exactly? I haven't heard of this before and I tried to look into it but I'm still confused!

                          1 Reply Last reply Reply Quote 0
                          • tomT
                            tom admin
                            last edited by

                            @scottesicdrone Haha okay so "feather" is a remnant from the days that the VOXL predecessor was a Qualcomm product. The nickname for the project at the time was "Eagle", therefore a "feather" was the nickname for an add-on board for the Eagle. So any reference to "feather" in voxl-modem is just talking about the modem add-on board. An example of one of the VOXL's predecessors is currently powering NASA's "Ingenuity" Drone on Mars (https://mars.nasa.gov/technology/helicopter/).

                            A little ModalAI lore for you that you won't find on Google 😉

                            1 Reply Last reply Reply Quote 0
                            • S
                              scottesicdrone
                              last edited by

                              Love the Lore and good thing to note! Last last thing, here is the link to an instance of me running dmesg if that's of any use.
                              output here
                              I'm going to keep trying to figure this out because this is a time-sensitive situation but if we will know for sure if it's a hardware issue once we get another modem to test it on. Thanks for the help thus far! Anything else I should try on here?

                              1 Reply Last reply Reply Quote 0
                              • tomT
                                tom admin
                                last edited by

                                @scottesicdrone Thanks! I am going to have another resource take a look at the issue and I will update you with our conclusion. I will message you if anything else is needed.

                                1 Reply Last reply Reply Quote 0
                                • S
                                  scottesicdrone
                                  last edited by

                                  Sounds good, thanks!

                                  1 Reply Last reply Reply Quote 0
                                  • First post
                                    Last post
                                  Powered by NodeBB | Contributors