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| 1 | - | # Raspberry Pi Filesystem Activity LED indicator |
| 1 | + | # Raspberry Pi Filesystem Activity Fading LED indicator |
| 2 | # by pyroxide (pyroxi.de) | |
| 3 | # | |
| 4 | # RPi.GPIO as well as psutil is required | |
| 5 | # | |
| 6 | # Both may be installed using pip: | |
| 7 | # $ sudo pip install RPi.GPIO | |
| 8 | # $ sudo pip install psutil | |
| 9 | # | |
| 10 | # or manually: | |
| 11 | # RPi.GPIO: https://aur.archlinux.org/packages/python-raspberry-gpio/ | |
| 12 | # psutil: https://pypi.python.org/pypi/psutil/#downloads | |
| 13 | import RPi.GPIO as GPIO | |
| 14 | import time, psutil | |
| 15 | ||
| 16 | GPIO.setmode(GPIO.BCM) | |
| 17 | GPIO.setwarnings(False) | |
| 18 | ||
| 19 | - | sleepTime = 0.04 #length of time between activity checks |
| 19 | + | sleepTime = 0.01 #length of time between activity checks |
| 20 | hddled = 3 # hdd activity led GPIO pin number | |
| 21 | dbg = True # debug messages | |
| 22 | - | #GPIO.output(hddled, activity) |
| 22 | + | increment = 2 |
| 23 | rampingIncrement = 4 | |
| 24 | - | while (True): |
| 24 | + | |
| 25 | - | newact = psutil.disk_io_counters() |
| 25 | + | |
| 26 | - | GPIO.output(hddled, ((newact.read_count > oldact.read_count) or (newact.write_count > oldact.write_count))) |
| 26 | + | led = GPIO.PWM(hddled,100) |
| 27 | - | oldact = newact |
| 27 | + | value = 0 |
| 28 | - | time.sleep(sleepTime) |
| 28 | + | lastValue = 0 |
| 29 | led.start(value) | |
| 30 | - | GPIO.cleanup() |
| 30 | + | |
| 31 | ramping = False | |
| 32 | try: | |
| 33 | while (True): | |
| 34 | newact = psutil.disk_io_counters() | |
| 35 | if (ramping): | |
| 36 | value += rampingIncrement | |
| 37 | ramping = (value < 100) | |
| 38 | if ((dbg) and (not ramping)): | |
| 39 | print("ramping=",ramping)
| |
| 40 | elif ((newact.read_count > oldact.read_count) or (newact.write_count > oldact.write_count)): | |
| 41 | value = 24 | |
| 42 | ramping = True | |
| 43 | if (dbg): | |
| 44 | print("ramping=",ramping)
| |
| 45 | else: | |
| 46 | value = max(0,value-increment) | |
| 47 | led.ChangeDutyCycle(max(min(value,100),0)) | |
| 48 | if ((dbg) and (value != lastValue)): | |
| 49 | print("value=",value)
| |
| 50 | oldact = newact | |
| 51 | time.sleep(sleepTime) | |
| 52 | ||
| 53 | except KeyboardInterrupt: | |
| 54 | led.stop() | |
| 55 | GPIO.cleanup() |
