mirror of
https://github.com/node-red/node-red-nodes.git
synced 2023-10-10 13:36:58 +02:00
126 lines
3.9 KiB
Python
126 lines
3.9 KiB
Python
#
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# Copyright 2014 IBM Corp.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Import library functions we need
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import RPi.GPIO as GPIO
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import sys
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bounce = 20 # bounce time in mS to apply
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if len(sys.argv) > 1:
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cmd = sys.argv[1].lower()
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pin = int(sys.argv[2])
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GPIO.setmode(GPIO.BOARD)
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GPIO.setwarnings(False)
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if cmd == "pwm":
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#print "Initialised pin "+str(pin)+" to PWM"
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GPIO.setup(pin,GPIO.OUT)
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p = GPIO.PWM(pin, 100)
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p.start(0)
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while True:
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try:
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data = raw_input()
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if data == "close":
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GPIO.cleanup(pin)
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sys.exit(0)
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p.ChangeDutyCycle(float(data))
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except EOFError: # hopefully always caused by us sigint'ing the program
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GPIO.cleanup(pin)
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sys.exit(0)
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except Exception as ex:
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print "bad data: "+data
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if cmd == "buzz":
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#print "Initialised pin "+str(pin)+" to Buzz"
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GPIO.setup(pin,GPIO.OUT)
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p = GPIO.PWM(pin, 100)
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p.stop()
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while True:
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try:
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data = raw_input()
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if data == "close":
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GPIO.cleanup(pin)
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sys.exit(0)
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elif float(data) == 0:
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p.stop()
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else:
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p.start(50)
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p.ChangeFrequency(float(data))
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except EOFError: # hopefully always caused by us sigint'ing the program
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GPIO.cleanup(pin)
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sys.exit(0)
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except Exception as ex:
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print "bad data: "+data
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elif cmd == "out":
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#print "Initialised pin "+str(pin)+" to OUT"
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GPIO.setup(pin,GPIO.OUT)
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if len(sys.argv) == 4:
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GPIO.output(pin,int(sys.argv[3]))
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while True:
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try:
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data = raw_input()
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if data == "close":
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GPIO.cleanup(pin)
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sys.exit(0)
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data = int(data)
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except EOFError: # hopefully always caused by us sigint'ing the program
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GPIO.cleanup(pin)
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sys.exit(0)
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except:
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data = 0
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if data != 0:
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data = 1
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GPIO.output(pin,data)
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elif cmd == "in":
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#print "Initialised pin "+str(pin)+" to IN"
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def handle_callback(chan):
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print GPIO.input(chan)
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if len(sys.argv) == 4:
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if sys.argv[3].lower() == "up":
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GPIO.setup(pin,GPIO.IN,GPIO.PUD_UP)
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elif sys.argv[3].lower() == "down":
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GPIO.setup(pin,GPIO.IN,GPIO.PUD_DOWN)
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else:
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GPIO.setup(pin,GPIO.IN)
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else:
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GPIO.setup(pin,GPIO.IN)
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print GPIO.input(pin)
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GPIO.add_event_detect(pin, GPIO.BOTH, callback=handle_callback, bouncetime=bounce)
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while True:
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try:
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data = raw_input()
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if data == "close":
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GPIO.cleanup(pin)
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sys.exit(0)
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except EOFError: # hopefully always caused by us sigint'ing the program
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GPIO.cleanup(pin)
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sys.exit(0)
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elif cmd == "rev":
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print GPIO.RPI_REVISION
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elif cmd == "ver":
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print GPIO.VERSION
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else:
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print "Bad parameters - {in|out|pwm} {pin} {value|up|down}"
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