blob: 74bd7b7161f3a7f829c6491d7608a48df50fe0b5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
#!/bin/sh
# Copyright (C) 2014 Intel Corporation
#
# Released under the MIT license (see COPYING.MIT)
if [ "$1" = "" -o "$1" = "--help" ] ; then
echo "Usage: $0 <serial terminal command>"
echo
echo "Simple script to handle maintaining a terminal for serial devices that"
echo "disappear when a device is powered down or reset, such as the USB"
echo "serial console on the original BeagleBone (white version)."
echo
echo "e.g. $0 picocom -b 115200 /dev/ttyUSB0"
echo
exit
fi
args="$@"
DEVICE=""
while [ "$1" != "" ]; do
case "$1" in
/dev/*)
DEVICE=$1
break;;
esac
shift
done
if [ "$DEVICE" != "" ] ; then
while true; do
if [ ! -e $DEVICE ] ; then
echo "serdevtry: waiting for $DEVICE to exist..."
while [ ! -e $DEVICE ]; do
sleep 0.1
done
fi
if [ ! -w $DEVICE ] ; then
# Sometimes (presumably because of a race with udev) we get to
# the device before its permissions have been set up
RETRYNUM=0
while [ ! -w $DEVICE ]; do
if [ "$RETRYNUM" = "2" ] ; then
echo "Device $DEVICE exists but is not writable!"
exit 1
fi
RETRYNUM=$((RETRYNUM+1))
sleep 0.1
done
fi
$args
if [ -e $DEVICE ] ; then
break
fi
done
else
echo "Unable to determine device node from command: $args"
exit 1
fi
|
