Initialize Git Repository: 'Raspberry-Pi-Bluetooth'

root/lib/systemd/system/bthelper@.service

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+[Unit]
+Description=Raspberry Pi family bluetooth helper
+After=hciuart.service
+Before=bluetooth.service
+Requires=hciuart.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/bthelper %I
+ProtectSystem=full
+RemainAfterExit=yes

root/lib/systemd/system/hciuart.service

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+[Unit]
+Description=Configure Bluetooth Modems connected by UART
+ConditionFileNotEmpty=/proc/device-tree/soc/gpio@7e200000/bt_pins/brcm,pins
+StartLimitIntervalSec=300
+StartLimitBurst=6
+After=dev-serial1.device
+
+[Service]
+Type=forking
+ExecStart=/usr/bin/btuart
+ProtectSystem=full
+Restart=on-failure
+RestartSec=3s
+
+[Install]
+WantedBy=dev-serial1.device

root/lib/udev/rules.d/90-raspi-bluetooth.rules

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+# Raspberry Pi bluetooth module: enable routing of SCO packets to the HCI interface
+ACTION=="add", SUBSYSTEM=="bluetooth", KERNEL=="hci[0-9]", TAG+="systemd", ENV{SYSTEMD_WANTS}+="bthelper@%k.service"