PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian)

class gmc(baseGeigerCommunication):

    def initCommunication(self):
        print "Initializing GMC protocol communication => geiger 1\r\n"
        # get firmware version
        self.serialPort.flushInput()
        self.serialPort.write("<GETVER>>")
        # assume that device responds within 1s
        time.sleep(1)
        response=""
        while (self.serialPort.inWaiting()>0 and self.stopwork==0):
            response = response + self.serialPort.read()
        # response=self.sendCommand("< GETVER >>")

        if len(response)>0:
            print "Found GMC-compatible device, version => geiger 1: ", response, "\r\n"
            # get serial number
            # serialnum=self.sendCommand("<GETSERIAL>>")
            # serialnum.int=struct.unpack('!1H', serialnum(7))[0]
            # print "Device Serial Number is: ", serialnum.int
            # disable heartbeat, we will request data from script
            self.serialPort.flushInput()
            self.serialPort.write("<HEARTBEAT0>>")
            # self.sendCommand("< HEARTBEAT0 >>")
            print "Please note data will be acquired once per 5 seconds => geiger 1\r\n"
            # update the device time
            self.serialPort.flushInput()
            self.serialPort.write("<GETDATETIME>>")
            # assume that device responds within 1s
            time.sleep(1)
            unitTime=""
            while (self.serialPort.inWaiting()>0 and self.stopwork==0):
                unitTime = unitTime + self.serialPort.read()
            # unitTime=self.sendCommand("< GETDATETIME >>")
            time.sleep(0.5)# just to ensure all CPM bytes are in serial port buffer
            print "Unit shows time as => geiger 1: ", unitTime, "\r\n"
            # self.sendCommand("<SETDATETIME[" + time.strftime("%y%m%d%H%M%S") + "]>>")
            # print "<SETDATETIME[" + time.strftime("%y%m%d%H%M%S") + "]>>"

        else:
            print "No response from device => geiger 1\r\n"
            self.stop()
            sys.exit(1)

    def getData(self):
        cpm=-1
        response=""
        try:
            # wait, we want sample every 30s
            for i in range(0,3):
                time.sleep(1)

            # send request
            self.serialPort.flushInput()
            self.serialPort.write("<GETCPM>>")
            # assume that device responds within 1s
            time.sleep(1)
            while (self.serialPort.inWaiting()>0 and self.stopwork==0):
                response = response + self.serialPort.read()
            # response=self.sendCommand("< GETCPM >>")
            # wait for data
            time.sleep(0.5) # just to ensure all CPM bytes are in serial port buffer

            if len(response)==2:
                # convert bytes to 16 bit int
                msb = int(response[0]) & 0x3F
                lsb = int(response[1]) & 0xFF
                cpm = int((msb << 8) | lsb)
            elif len(response) > 2:
                edata=""
                for i in range(1,len(response)):
                    edata = edata + ord(response[0])*256+ord(response[i])
                cpm = int( ( float(edata) / ( len(response) - 1 ) ) +0.5)
            else:
                edata=""
                for i in range(1,len(response)):
                    edata = edata + ord(response[0])*256+ord(response[i])
                print "Unknown response to CPM request, device is not GMC-compatible? => geiger 1\r\n"
                print "Data recieved was: ",str(edata),"\r\n"

        except Exception as e:
            print "\r\nProblem in getData procedure (disconnected USB device?) => geiger 1:\r\n\t",str(e),"\r\nExiting\r\n"
            self.stop()
            sys.exit(1)
            
        utcTime=datetime.datetime.utcnow()
        data=[cpm, utcTime]
        return data

python PyRadmon.py
Reading configuration:

        User name configured

        Password configured

        Serial port name configured

        Serial port speed configured

        Protocol configured

        Device number configured

        Protocol configured


Using GMC protocol for 1 => geiger 1

No samples in queue, waiting 5 seconds => geiger 1

Gathering data started => geiger 1

Initializing GMC protocol communication => geiger 1

Found GMC-compatible device, version => geiger 1:  GMC-300Re 2.36

Please note data will be acquired once per 5 seconds => geiger 1

Unit shows time as => geiger 1:

No samples in queue, waiting 5 seconds => geiger 1


Problem in getData procedure (disconnected USB device?) => geiger 1:
        invalid literal for int() with base 10: ''
Exiting

Waiting and reap threads

Waiting 30 seconds => geiger 1

Geiger sample => geiger 1:      CPM = 17        2015-03-19 02:07:38.516733
Geiger sample => geiger 1:      CPM = 20        2015-03-19 02:07:42.525041
Geiger sample => geiger 1:      CPM = 19        2015-03-19 02:07:46.535699
Geiger sample => geiger 1:      CPM = 18        2015-03-19 02:07:50.546573
Geiger sample => geiger 1:      CPM = 18        2015-03-19 02:07:54.557623
Geiger sample => geiger 1:      CPM = 19        2015-03-19 02:07:58.568534
Geiger sample => geiger 1:      CPM = 19        2015-03-19 02:08:02.580153
Average result => geiger 1:     CPM = 18        2015-03-19 02:08:02.580153

Connecting to server => geiger 1

Sending average sample => geiger 1: 18 CPM

Server response => geiger 1:  HTTP/1.1 200 OK