#!/usr/bin/python
# -*- coding: UTF-8 -*-

import serial       # the communication with the serial port
import time         # time formatting and more

def getCPM(ser):                               # get CPM from device
    ser.write(b'<GETCPM>>')
    rec = ser.read(2)
    return ord(rec[0])<< 8 | ord(rec[1])

ser = serial.Serial('/dev/ttyUSB0', 115200)    # open serial port

while True:
    ts  = time.strftime("%Y-%m-%d %H:%M:%S")
    cpm = getCPM(ser)
    
    print ts, ", CPM=", cpm                    # print timestamp and CPM

    log = open("./log/cpm.log", "a")                 # logs the data
    log.write(ts + ", " + str(cpm) + "\n")
    log.close    

    time.sleep(10)                             # sleep for 10 seconds
        
ser.close()                                    # close serial port

plt.plot(logtime[N/2:recmax - N/2], np.convolve(cpm, np.ones((N,))/N, mode='same')[N/2:recmax - N/2], color="yellow", linewidth=6, label ="")

print "x=", len(logtime[N/2:recmax - N/2])
print "y=", len(np.convolve(cpm, np.ones((N,))/N, mode='same')[N/2:recmax - N/2])

N = min(int(len(logtime) / 2), 100)

Traceback (most recent call last):
  File "C:\Users\Chaosuser\Desktop\GeigerLog\geiger_basic.py", line 256, in <module>
    cfg= getCFG(ser)
  File "C:\Users\Chaosuser\Desktop\GeigerLog\geiger_basic.py", line 134, in getCFG
    cfg.append(ord(rec[i]))
TypeError: ord() expected string of length 1, but int found

def getCFG(ser):
    # Get configuration data
    # send <GETCFG>> and read 256 bytes
    # returns the configuration data. A total of 256 bytes will be returned.
    #
    # This routine converts the 256 character long string
    # into a python list of 256 int values, and returns the list

    ser.write(b'<GETCFG>>')
    rec = ser.read(256)    
    
    cfg = []
    for i in range(0,256):
        cfg.append(ord(rec[i]))

    return cfg

2017-02-12 15:51:52, 23
2017-02-12 15:51:57, 23
2017-02-12 15:52:17, 18
2017-02-12 15:52:22, 22

data    = np.genfromtxt(logfile,   delimiter=",", converters = {0: datestr2num}) # use numpy to read data into 2-dim array

def datestr2num(string_date):
    """ convert a Date&Time string in the form YYYY-MM-DD HH:MM:SS
    to a Unix timestamp"""

    dt=time.mktime(datetime.datetime.strptime(string_date, "%Y-%m-%d %H:%M:%S").timetuple())  
    return dt

quote:

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The "using serial communication via /dev/gqgmc (linked to /dev/ttyUSB0" thing is about the way Linux handles what is called "COM-Ports" under Windows.

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quote:

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The log file must have precisely(!) this format:
...
This can be changed, of course. In the main of the plot program it is this line:

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quote:

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In short, byte sequences are handled as strings in P2 and as byte sequences in P3.
...
I could not make this work under Python3. Please, let me know when you solved it!

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def decodeTOstr(byte):
    ser=str(byte)
    return ser

return datetime.datetime(idt[0], idt[1], idt[2], idt[3],idt[4],idt[5])
ValueError: month must be in 1..12

def decodeTOstr(byte):
    #ser=str(b"byte")
    ser = byte.decode('latin-1')
    return ser

print ("\t%8d  %s %6d" % (i, time.strftime("%Y-%m-%d %H:%M:%S", time.localtime((logtime))), cpm))
IndexError: index 4 is out of bounds for axis 0 with size 4

	Last 5 records:
	      -1  2017-02-12 15:52:22     22
	       0  2017-02-12 15:51:52     23
	       1  2017-02-12 15:51:57     23
	       2  2017-02-12 15:52:17     18
	       3  2017-02-12 15:52:22     22

plt.plot(logtime[N/2:recmax - N/2], np.convolve(cpm, np.ones((N,))/N, mode='same')[N/2:recmax - N/2], color="yellow", linewidth=6, label ="")
TypeError: slice indices must be integers or None or have an __index__ method

File "C:\Program Files\Python35\lib\site-packages\matplotlib\axes\_base.py", line 244, in _xy_from_xy
    "have shapes {} and {}".format(x.shape, y.shape))
ValueError: x and y must have same first dimension, but have shapes (0,) and (5,)

DEBUG getCPM//; rec= b'\x00\x17'
2017-02-16 00:16:42    CPM= 25127
DEBUG getCPM//; rec= b'\x00\x18'
2017-02-16 00:16:43    CPM= 25127
DEBUG getCPM//; rec= b'\x00\x19'
2017-02-16 00:16:44    CPM= 25127

2017-02-16 01:08:51, 62549
2017-02-16 01:08:52, 63509
2017-02-16 01:08:53, 64423
2017-02-16 01:08:54, 65317
2017-02-16 01:08:55, 651
2017-02-16 01:08:56, 1534
2017-02-16 01:08:57, 2439
2017-02-16 01:08:58, 3312

quote:

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When you get CPM readings near the 2^16 limit, you should switch device to CPS readings.

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