class ArduinoSerial(object): def __init__(self): self.NOTHING = 0 self.OPEN = 1 # clip is open, in transit (fsr low, switch low) self.EMPTY = 2 # clip is closed, no paper in (fsr high, switch high) self.READY = 3 # clip is closed, paper in place (fsr high, switch low) self.UNKNOWN = 4 # initial state self.initSerial() #self.ser = None def initSerial(self): # configure the serial connections (the parameters differs on the device you are connecting to) portName = Serial.list()[0]; #try: self.ser = Serial(this, portName, 9600) #except: # print "ERROR: Arduino Unavailable, Serial object could not be initialized." def check(self): retVal = self.NOTHING #check to see if we have a serial object #if self.ser: if self.ser.available() > 0: out = int(self.ser.read()) out = out-48 if out != self.NOTHING: retVal = out return retVal
