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44 lines
1.3 KiB
Bash
Executable File
44 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Copyright (C) 2015 Eistec AB
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#
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# This file is subject to the terms and conditions of the GNU Lesser General
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# Public License v2.1. See the file LICENSE in the top level directory for more
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# details.
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#
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# Find all USB to serial devices
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# iterate over usb-tty devices:
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for basedev in $(find /sys/bus/usb/devices/ -regex "/sys/bus/usb/devices/[0-9]+[^:/]*" -maxdepth 2 -follow 2>/dev/null); do
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ttydirs=$(find ${basedev} -regex "${basedev}/[^/]*:.*" -mindepth 2 -maxdepth 3 -name tty -follow 2>/dev/null)
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if [ -z "${ttydirs}" ]; then
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continue
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fi
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# See if the device has any tty devices assigned to it, get the first match
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tty=$(find ${ttydirs} -maxdepth 1 -mindepth 1 -printf '%f\n' | head -n 1 2>/dev/null)
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if [ -z "${tty}" ]; then
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continue
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fi
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parent=$(echo ${basedev} | sed -e 's%\(/sys/bus/usb/devices/[^/]*\)/.*%\1%')
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serial=$(cat "${parent}/serial" 2>/dev/null)
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# split results into array
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if [ $# -lt 1 ]; then
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# No arguments given, return first found tty
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echo "/dev/${tty}"
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exit 0
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fi
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# else: Match any of the given serials
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for s in "${@}"; do
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echo "${serial}" | egrep -e "${s}" -q
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if [ $? -eq 0 ]; then
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# return first tty
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echo "/dev/${tty}"
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exit 0
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fi
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done
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done
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# not found
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exit 1;
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