Initialize Git Repository: 'Raspberry-Pi-Bluetooth'

root/usr/bin/btuart

@@ -0,0 +1,33 @@
+#!/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