Initialize Git Repository: 'Raspberry-Pi-Bluetooth'

root/DEBIAN/control

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+Package: raspi-bluetooth
+Version: 1.0.0
+Architecture:
+Installed-Size:
+Depends: bluez, bluez-firmware, raspi-firmware
+Priority: important
+Section: misc
+Homepage: http://www.privlab.it
+Maintainer: PrivLab <repository@privlab.it>
+Description: Raspberry Pi family bluetooth helper

root/DEBIAN/postinst

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+#!/usr/bin/sh
+
+set -e
+set -u
+
+if [ -d '/run/systemd/system' ]; then
+  /usr/bin/systemctl --system daemon-reload > '/dev/null' 2>&1 || \
+    /usr/bin/true
+fi
+
+case "${1}" in
+  configure)
+    if [ -x '/usr/bin/deb-systemd-helper' ]; then
+      /usr/bin/deb-systemd-helper unmask 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    fi
+    if /usr/bin/deb-systemd-helper --quiet was-enabled 'hciuart.service'; then
+      /usr/bin/deb-systemd-helper enable 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    else
+      /usr/bin/deb-systemd-helper update-state 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    fi
+    if [ -x '/usr/bin/deb-systemd-invoke' ]; then
+      /usr/bin/systemctl --system daemon-reload > '/dev/null' 2>&1 || \
+        /usr/bin/true
+      if [ -n "${2}" ]; then
+        _dh_action='restart'
+      else
+        _dh_action='start'
+      fi
+      /usr/bin/deb-systemd-invoke "${_dh_action}" 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    fi
+  ;;
+esac

root/DEBIAN/postrm

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+#!/usr/bin/sh
+
+set -e
+set -u
+
+if [ -d '/run/systemd/system' ]; then
+  /usr/bin/systemctl --system daemon-reload > '/dev/null' 2>&1 || \
+    /usr/bin/true
+fi
+
+case "${1}" in
+  remove)
+    if [ -x '/usr/bin/deb-systemd-helper' ]; then
+      /usr/bin/deb-systemd-helper mask 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    fi
+  ;;
+  purge)
+    if [ -x '/usr/bin/deb-systemd-helper' ]; then
+      /usr/bin/deb-systemd-helper purge 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+      /usr/bin/deb-systemd-helper unmask 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    fi
+  ;;
+esac

root/DEBIAN/prerm

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+#!/usr/bin/sh
+
+set -e
+set -u
+
+case "${1}" in
+  remove)
+    if [ -x '/usr/bin/deb-systemd-invoke' ]; then
+      /usr/bin/deb-systemd-invoke stop 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+      /usr/bin/deb-systemd-invoke disable 'hciuart.service' > '/dev/null' 2>&1 || \
+        /usr/bin/true
+    fi
+  ;;
+esac

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"

root/usr/bin/bthelper

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+#!/usr/bin/env sh
+# For on-board BT, configure the BDADDR if necessary and route SCO packets
+# to the HCI interface (enables HFP/HSP)
+
+set -e
+
+if [ "$#" -ne '1' ]; then
+  /usr/bin/echo "Usage: ${0} <bluetooth hci device>"
+  exit 0
+fi
+
+DEV="${1}"
+
+# Need to bring hci up before looking at MAC as it can be all zeros during init
+/usr/bin/hciconfig "${DEV}" up
+if ! /usr/bin/hciconfig "${DEV}" | /usr/bin/grep --quiet 'Bus: UART'; then
+  /usr/bin/echo 'Not a UART-attached BT Modem'
+  exit 0
+fi
+
+if ( /usr/bin/hcitool -i "${DEV}" dev | /usr/bin/grep --extended-regexp --quiet '\s43:4[35]:|AA:AA:AA:AA:AA:AA' ); then
+  SERIAL=$(< '/proc/device-tree/serial-number' /usr/bin/cut '-c9-')
+  B1=$(/usr/bin/echo "${SERIAL}" | /usr/bin/cut '-c3-4')
+  B2=$(/usr/bin/echo "${SERIAL}" | /usr/bin/cut '-c5-6')
+  B3=$(/usr/bin/echo "${SERIAL}" | /usr/bin/cut '-c7-8')
+  BDADDR=$(/usr/bin/printf '0x%02x 0x%02x 0x%02x 0xeb 0x27 0xb8' $((0x$B3 ^ 0xaa)) $((0x$B2 ^ 0xaa)) $((0x$B1 ^ 0xaa)))
+
+  /usr/bin/hcitool -i "${DEV}" cmd 0x3f 0x001 "${BDADDR}"
+  /usr/bin/hciconfig "${DEV}" reset
+else
+  /usr/bin/echo 'Raspberry Pi BDADDR already set'
+fi
+
+# Route SCO packets to the HCI interface (enables HFP/HSP)
+/usr/bin/hcitool -i "${DEV}" cmd 0x3f 0x1c 0x01 0x02 0x00 0x01 0x01 > '/dev/null'
+
+# Force reinitialisation to allow extra features such as Secure Simple Pairing
+# to be enabled, for currently unknown reasons. This requires bluetoothd to be
+# running, which it isn't yet. Use this kludge of forking off another shell
+# with a delay, pending a complete understanding of the issues.
+(/usr/bin/sleep '5s'; /usr/bin/bluetoothctl power off; /usr/bin/bluetoothctl power on) &

root/usr/bin/btuart

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+#!/usr/bin/env sh
+
+HCIATTACH='/usr/bin/hciattach'
+
+if /usr/bin/grep --quiet 'raspberrypi,4' '/proc/device-tree/compatible'; then
+  BDADDR=''
+else
+  SERIAL=$(< '/proc/device-tree/serial-number' /usr/bin/cut '-c9-')
+  B1=$(/usr/bin/echo "${SERIAL}" | /usr/bin/cut '-c3-4')
+  B2=$(/usr/bin/echo "${SERIAL}" | /usr/bin/cut '-c5-6')
+  B3=$(/usr/bin/echo "${SERIAL}" | /usr/bin/cut '-c7-8')
+  BDADDR=$(/usr/bin/printf 'b8:27:eb:%02x:%02x:%02x' $((0x$B1 ^ 0xaa)) $((0x$B2 ^ 0xaa)) $((0x$B3 ^ 0xaa)))
+fi
+
+# Bail out if the kernel is managing the Bluetooth modem initialisation
+if ( /usr/bin/dmesg | /usr/bin/grep --extended-regexp --quiet "hci[0-9]+: BCM: chip" ); then
+  # On-board bluetooth is already enabled
+  exit 0
+fi
+
+UART0=$(/usr/bin/cat '/proc/device-tree/aliases/uart0')
+SERIAL1=$(/usr/bin/cat '/proc/device-tree/aliases/serial1')
+
+if [ "${UART0}" = "${SERIAL1}" ] ; then
+  UART0_PINS=$(/usr/bin/wc --bytes '/proc/device-tree/soc/gpio@7e200000/uart0_pins/brcm\,pins' | /usr/bin/cut --delimiter=' ' --fields='1')
+  if [ "${UART0_PINS}" = "16" ] ; then
+    "${HCIATTACH}" '/dev/serial1' bcm43xx 3000000 flow - "${BDADDR}"
+  else
+    "${HCIATTACH}" '/dev/serial1' bcm43xx 921600 noflow - "${BDADDR}"
+  fi
+else
+  "${HCIATTACH}" '/dev/serial1' bcm43xx 460800 noflow - "${BDADDR}"
+fi