Initial commit. In a broken state, do not use.

files/files/usr/bin/btuart

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+HCIATTACH=/usr/bin/hciattach
+if grep -q "Pi 4" /proc/device-tree/model; then
+  BDADDR=
+else
+  SERIAL=`cat /proc/device-tree/serial-number | cut -c9-`
+  B1=`echo $SERIAL | cut -c3-4`
+  B2=`echo $SERIAL | cut -c5-6`
+  B3=`echo $SERIAL | cut -c7-8`
+  BDADDR=`printf b8:27:eb:%02x:%02x:%02x $((0x$B1 ^ 0xaa)) $((0x$B2 ^ 0xaa)) $((0x$B3 ^ 0xaa))`
+fi
+
+uart0="`cat /proc/device-tree/aliases/uart0`"
+serial1="`cat /proc/device-tree/aliases/serial1`"
+
+if [ "$uart0" = "$serial1" ] ; then
+	uart0_pins="`wc -c /proc/device-tree/soc/gpio@7e200000/uart0_pins/brcm\,pins | cut -f 1 -d ' '`"
+	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