82 lines
2.0 KiB
Bash
82 lines
2.0 KiB
Bash
#!/bin/sh
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#===============================================================================
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#
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# Copyright (C) 2023 by Digi International Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 as published by
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# the Free Software Foundation.
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#
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#
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# !Description: Initialize bluetooth hardware
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#
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#===============================================================================
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HCI_IFACE="hci0"
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log() {
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printf "<3>iw612-bluetooth: %s\n" "${1}" >/dev/kmsg
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}
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set_btaddr() {
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bt_addr=$(echo $(fw_printenv -n btaddr) | awk -F ":" '{ for(i=NF;i>=1;i--) printf "0x%s ", $i }')
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hcitool -i ${HCI_IFACE} cmd 0x3f 0x0022 0xfe 0x06 ${bt_addr}
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}
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bluetooth_start() {
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if ! [ -e "/proc/device-tree/bluetooth/mac-address" ]; then
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log "[ERROR] Bluetooth mac-address not found"
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return
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fi
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# If there is a hciattach process running, just do nothing
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pidof hciattach > /dev/null && log "Bluetooth already activated" && return
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# If port speed is 3M, assume that FW has been modified to run at that speed
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if [ "$(stty -F /dev/ttyBt speed)" != "3000000" ]; then
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hciattach -t5 /dev/ttyBt any 115200 flow nosleep && \
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hciconfig ${HCI_IFACE} up && \
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sleep 0.2 && \
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set_btaddr && \
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# Change rate to 3M using a custom vendor command
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hcitool -i ${HCI_IFACE} cmd 0x3f 0x0009 0xc0 0xc6 0x2d 0x00 && \
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sleep 0.2 && \
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killall hciattach && \
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sleep 0.2
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fi
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hciattach -t5 /dev/ttyBt any -s 3000000 3000000 flow && \
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log "Bluetooth activated" && return
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log "[ERROR] Cannot initialize Bluetooth"
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return 1
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}
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bluetooth_stop() {
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if [ -e "/sys/class/bluetooth/${HCI_IFACE}" ]; then
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killall hciattach > /dev/null
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sleep 1
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# send a raw hci reset to set the chip in a good state
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echo -e -n \\x01\\x03\\x0c\\x00 > /dev/ttyBt
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fi
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}
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case "$1" in
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start)
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bluetooth_start
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;;
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stop)
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bluetooth_stop
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;;
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restart)
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$0 stop
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sleep 1
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$0 start
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;;
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*)
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echo "Usage: $0 {start|stop|restart}"
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exit 1
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;;
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esac
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