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

PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian) 2 years 8 months ago #781

  • mw0uzo
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Ok let me check code...
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PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian) 2 years 8 months ago #782

  • ThibmoRozier
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mw0uzo wrote:
Ok let me check code...

Thanks man, I really appreciate it. :)
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PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian) 2 years 8 months ago #783

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Every 30s send:
serialport.Write("<GETCPM>>");

Here is my c# code in the serial data handler for converting the serial buffer returned:
if (gqserialButton.Checked & indata.Length==2)
{
byte msb = (byte) (indata[0] & 0x3F);
byte lsb = (byte) (indata[1] & 0xFF);
ushort cpm = (ushort)((msb << 8) | lsb);
receivednumber = (float)cpm;
numberstring = cpm.ToString();
}

Question:

- Have you & msb with 0x3F to mask off the top bits, this might be confusing the conversion as these bits can vary depending on model/firmware apparently
Last Edit: 2 years 8 months ago by mw0uzo.
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PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian) 2 years 8 months ago #784

  • jnissen
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Well it ran over night... Not sure it was reporting in correctly as I did not see the map update or the latest data show valid.

Here is the errors from the latest code snippets you provided.
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

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "PyRadmon.py", line 164, in run
    self.initCommunication()
  File "PyRadmon.py", line 329, in initCommunication
    print "Unit shows time as => geiger 1: ", unitTime, "\r\n"
UnboundLocalError: local variable 'unitTime' referenced before assignment

Unit shows time as => geiger 1:  No samples in queue, waiting 5 seconds => geiger 1

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

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

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

No samples in queue, waiting 5 seconds => geiger 1
Last Edit: 2 years 8 months ago by jnissen.
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PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian) 2 years 8 months ago #786

  • ThibmoRozier
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mw0uzo wrote:
Every 30s send:
serialport.Write("<GETCPM>>");

Here is my c# code in the serial data handler for converting the serial buffer returned:
if (gqserialButton.Checked & indata.Length==2)
{
byte msb = (byte) (indata[0] & 0x3F);
byte lsb = (byte) (indata[1] & 0xFF);
ushort cpm = (ushort)((msb << 8) | lsb);
receivednumber = (float)cpm;
numberstring = cpm.ToString();
}

Question:

- Have you & msb with 0x3F to mask off the top bits, this might be confusing the conversion as these bits can vary depending on model/firmware apparently

Genious... Bitwise and and bitwise or... Epic, Dan. :D
I just wish I had a bloody GMC to test it by myself but egh...
Got a code fix here... Fingers crossed.
And fixed the reference. :)
It stated `responce=""` where it should state `unitTime=""`
My bad. :/
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 = bytes(response[0] & 0x3F)
                lsb = bytes(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

Just one thing I really wonder about...
Why the Fredrick did this make it this annoying? O.o
The method used by MyGeiger is waaaaay easier..
Last Edit: 2 years 8 months ago by ThibmoRozier.
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PyRadmon install and set up on Raspberry Pi (Wheezy Raspbian) 2 years 8 months ago #787

  • mw0uzo
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Cool, hope it will be fixed now :cheer:
Stuff like that tends to be done in firmware because its all low level asm. Using spare bits for adding in functions on top of older code etc. The and-or mask is a classic, ever wonder how 2d 'sprites' were plotted on top of backgrounds without a nasty rectangular block around them?
Last Edit: 2 years 8 months ago by mw0uzo.
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