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content/posts/2022-07-31-handy-tools-mmdvm/index.md

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----
-title: handy tools for MMDVM
-summary: >
-  Some nice ideas and so...
-date: 2022-07-31T13:12:39+02:00
-#categories: [computerstuff]
-tags: [linux,systemd,networking,manjaro,dns]
-draft: true
-
----
-
-#### the script
-
-~~~bash
-# file: "kill-mmdvm.sh"
-#!/bin/bash
-#udev/rules.d contains a rule file like:
-#SUBSYSTEM=="tty", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", SYMLINK+="ttyGD77", TAG+="systemd", ENV{SYSTEMD_WANTS}="mmdvmhost.service"
-#ACTION=="remove", SUBSYSTEM=="tty", ENV{ID_VENDOR_ID}=="1fc9", ENV{ID_MODEL_ID}=="0094", RUN+="/etc/udev/kill-mmdvm.sh"
-#
-#mmdvmhost service stopping lasts about 1 minute to succeed, so kill is the option...
-if [ "$ACTION" = "remove" ]
-then
-systemctl kill -s KILL mmdvmhost.service
-fi
-~~~
-
-#### restarting/reloading udev rules without reboot
-
-~~~console
-# udevadm control --reload-rules && udevadm trigger
-~~~
-
-#### gd77 udev rules
-
-~~~ini
-# file: "/etc/udev/rules.d/99-gd77.rules"
-# USB rules for GD-77
-# Place this in /etc/udev/rules.d/ to let all users talk to the radios by USB.
-
-#
-SUBSYSTEM=="usb", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666"
-
-# HIDAPI/libusb
-SUBSYSTEM=="usb", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666"
-SUBSYSTEM=="usb", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", MODE="0666"
-
-# HIDAPI/hidraw
-KERNEL=="hidraw*", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666"
-KERNEL=="hidraw*", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", MODE="0666"
-
-# HIDAPI/hiddev
-## We need to unbind this device, otherwise LibUsb will fail to SetConfiguration() and ClaimInterface()
-# For Bootloader (usbhid)
-KERNEL=="hiddev*", ATTRS{idVendor}=="15a2", ATTRS{idProduct}=="0073", MODE="0666", RUN+="/bin/bash -c 'ID=$(IFS=/; read -a array <<< %p; echo ${array[-3]}); echo $ID > /sys/bus/usb/drivers/usbhid/unbind'"
-
-# OpenGD77
-KERNEL=="ttyACM[0-9]*", SUBSYSTEM=="tty", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="0094", MODE="0666", GROUP="dialout", SYMLINK+="OpenGD77"
-~~~
-
-***
-
-Sources:
-
-* <https://gist.github.com/gru-github/cf7c121e6b0e441676fb3263ebe02193>
-* <https://unix.stackexchange.com/questions/39370/how-to-reload-udev-rules-without-reboot>