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[Unit] Description=Broadcom BCM43438 bluetooth HCI ConditionPathIsDirectory=/proc/device-tree/soc/gpio@7e200000/bt_pins Before=bluetooth.service After=dev-ttyAMA0.device [Service] Type=simple ExecStart=/usr/bin/btattach -B /dev/ttyAMA0 -P bcm -S 3000000 [Install] WantedBy=multi-user.target