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Manage dcc-usb-connector auto-stop on removal

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Daniele Viganò
2026-03-01 21:47:28 +01:00
parent e48b35ff4e
commit fbfd207fe8
5 changed files with 208 additions and 9 deletions
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12
connector/99-dcc-usb-connector.rules
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@@ -1,7 +1,7 @@
# Udev rule to auto-start dcc-usb-connector.service when USB device is connected
# Udev rule to auto-start/stop dcc-usb-connector.service when USB device is connected/removed
#
# This rule detects when a CH340 USB-to-serial adapter (ID 1a86:7523)
# is connected and assigned to /dev/ttyUSB0, then automatically starts
# is connected/removed on /dev/ttyUSB0, then automatically starts/stops
# the dcc-usb-connector.service (user systemd service).
#
# Installation:
@@ -13,8 +13,10 @@
# udevadm test /sys/class/tty/ttyUSB0
# udevadm monitor --property --subsystem-match=tty
#
# The service will be started/stopped automatically when the device
# is plugged in/unplugged.
# The service will be started when the device is plugged in and stopped
# when the device is unplugged.
# Match USB device 1a86:7523 on ttyUSB0 and trigger user systemd service
# Match USB device 1a86:7523 on ttyUSB0
# TAG+="systemd" tells systemd to track this device
# ENV{SYSTEMD_USER_WANTS} starts the service on "add" and stops it on "remove"
SUBSYSTEM=="tty", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", KERNEL=="ttyUSB0", TAG+="systemd", ENV{SYSTEMD_USER_WANTS}="dcc-usb-connector.service"