S-Jinn
Serial Communications Jinni
Overview
Command Reference
Examples
Sjinn Project
Page
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Sample Scripts
| dacq |
- starts and stops data acquisition. |
| dacqd |
- acquires data, creates daily files & adds timestamps to
readings. |
From the scripts directory:
- Modify the rs232 command in 'dacqd' for your particular
instrument
- Modify the scan_rate value in 'dacqd' to specify time between
measurements
- Type './dacq start' to start data acquisition
- Type 'tail -f mmddyyyy' where mmddyyyy are todays month, day,
and year
- You should see the data being written to the file
- Press ctrl-c when you want to quit viewing the data
- Type './dacq stop' when you want to stop aquiring data
dacq
dacq
#!/bin/bash
case "$1" in
start)
echo -n "Starting data acquisition: "
sleep 1
nohup ./dacqd &>/dev/null &
echo -n "dacq started at " >> dacqlog
date >> dacqlog
echo dacqd
;;
stop)
echo -n "Shutting down data acquisition: "
echo -n "dacq stopped at " >> dacqlog
date >> dacqlog
killall dacqd
echo dacqd
;;
restart)
$0 stop
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart}"
exit 1
esac
exit 0
dacqd
#!/bin/bash
# will store data in a file named mmddyyyy (current month, day, and
year)
# and automatically create a new file for each day.
# readings will be timestamped in the format 'hh:mm.ss,
reading'
# (hours, minutes, seconds, reading from instrument)
# dacq log will record start and stop times and stderr from
sjinn
# set to number of secCheatsheetonds between readings
SCAN_TIME=3
while :
do
datestamp=`date "+%m%d%Y"`
timestamp=`date "+%H:%M.%S"`
# modify next 2 lines for your particular rs232 device
data=$(rs232 -b600 -p7n2 -s"\n" -r16 2>>dacqlog)
data=$(echo -n $data|awk '{print $2}')
echo $timestamp, $data >> $datestamp
sleep $SCAN _TIME
done
Notes
The single quotes around the date command are `
characters not ' characters.
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