openwrt usb device base error: could not open port <empty> (doodledream printer)

[arneboon]

root@wifibox:/tmp# cat print3d-.log
Print 3D server
Platform information: unknown endianness (assuming big), sizeof(short)=2, sizeof(int)=4, sizeof(long)=4, sizeof(float)=4
Using printer device: '-v'.
Using printer type from UCI configuration.
01-01 00:08:45  [SER] Could not open port /dev/-v (No such file or directory)

[arneboon]

print3d is not started correctly at boot

root@wifibox:~# ps | grep print3d
 1038 root      1284 S    {print3d-manager} /bin/sh /usr/libexec/print3d-manag
 1040 root      1280 S    inotifyd /usr/libexec/print3d-new-device.sh /dev n
 1211 root      1284 S    grep print3d

[arneboon]

when running manually, it works:

root@wifibox:/usr/libexec# ls
print3d-manager.sh     print3d-new-device.sh  print3d-runner.sh

root@wifibox:/usr/libexec# ./print3d-new-device.sh

log is created in tmp:

root@wifibox:/tmp# ls print3d*
print3d-ttyUSB0
print3d-ttyUSB0.log

[arneboon]

http://192.168.5.1/d3dapi/info/status:

{
data: {
bed: 0,
bed_target: 0,
buffered_lines: 0,
current_line: 0,
has_control: true,
hotend: 180,
hotend_target: 180,
state: "idle",
total_lines: 0
},
status: "success"
}

[arneboon]

this was fixed by commit https://github.com/Doodle3D/print3d/commit/1f1e7a2c37f242a845b7d5888869de3b824d39ae

inotifyd only activates on changes, at boot the changed might be missed therefor run the command at least once at boot the script has a check to prevent opening a connection when there already is one present