62 lines
No EOL
2.4 KiB
Bash
62 lines
No EOL
2.4 KiB
Bash
#!/bin/sh
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#--------------------------------------------------------------------
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# NOTE !!!!!
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# Do NOT use this script.
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#
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# This is the original script used for the guide. It is out of date
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# and no longer used. It is only here for reference. Use the .py
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# version of the script found in this same repository.
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#--------------------------------------------------------------------
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# Timelapse script, because timelapse options in raspistill don't power
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# down the camera between captures. Script also provides a camera busy LED
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# (v2 cameras don't include one) and a system halt button.
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# 'gpio' command requires WiringPi: sudo apt-get install wiringpi
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# Limitations: if DEST is FAT32 filesystem, max of 65535 files in directory;
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# if DEST is ext4 filesystem, may have performance issues above 10K files.
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# For intervals <2 sec, better just to use raspistill's timelapse feature.
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# Configurable stuff...
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INTERVAL=15 # Time between captures, in seconds
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WIDTH=1280 # Image width in pixels
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HEIGHT=720 # Image height in pixels
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QUALITY=51 # JPEG image quality (0-100)
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DEST=/boot/timelapse # Destination directory (MUST NOT CONTAIN NUMBERS)
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PREFIX=img # Image prefix (MUST NOT CONTAIN NUMBERS)
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HALT=21 # Halt button GPIO pin (other end to GND)
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LED=5 # Status LED pin (v2 Pi cam lacks built-in LED)
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prevtime=0 # Time of last capture (0 = do 1st image immediately)
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gpio -g mode $HALT up # Initialize GPIO states
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gpio -g mode $LED out
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mkdir -p $DEST # Create destination directory (if not present)
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# Find index of last image (if any) in directory, start at this + 1
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FRAME=$(($(find $DEST -name "*.jpg" -printf %f\\n | sed 's/^[^1-9]*//g' | sort -rn | head -1 | sed 's/[^0-9]//g') + 1))
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while : # Forever
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do
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while : # Until next image capture time
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do
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currenttime=$(date +%s)
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if [ $(($currenttime-$prevtime)) -ge $INTERVAL ]; then
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break # Time for next image cap
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fi
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# Check for halt button -- hold >= 2 sec
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while [ $(gpio -g read $HALT) -eq 0 ]; do
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if [ $(($(date +%s)-currenttime)) -ge 2 ]; then
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gpio -g write $LED 1
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shutdown -h now
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fi
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done
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done
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OUTFILE=`printf "$DEST/$PREFIX%05d.jpg" $FRAME`
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# echo $OUTFILE
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gpio -g write $LED 1
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raspistill -n -w $WIDTH -h $HEIGHT -q $QUALITY -th none -t 250 -o $OUTFILE
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gpio -g write $LED 0
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FRAME=$(($FRAME + 1)) # Increment image counter
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prevtime=$currenttime # Save image cap time
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done |