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#!/usr/bin/env python2.7  
 
import RPi.GPIO as GPIO  
GPIO.setmode(GPIO.BCM)  

while True:
   # GPIO 23 set up as input. It is pulled up to stop false signals  
   GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)  
  
   print "Make sure you have the camera connected so that when a signal comes"  
   print "it will connect GPIO port 23 (pin 16) to GND (pin 6)\n"  
   #raw_input("Press Enter when ready\n>")  
  
   print "Waiting for voltage drop on port 23\n"  
   # program is waiting for falling edge 

   try:  
       GPIO.wait_for_edge(23, GPIO.FALLING)  
	   if GPIO.IN == True:
          f = open('interrupt', 'w')
          f.write('Voltage drop detected, getting GPS-Time\n') 
		  #f.flush()
          f.close()

   except KeyboardInterrupt:  
       GPIO.cleanup()       # clean up GPIO on CTRL+C exit  
   GPIO.cleanup()           # clean up GPIO on normal exit 

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#!/usr/bin/env python2.7  
 
import RPi.GPIO as GPIO  
GPIO.setmode(GPIO.BCM)  

f = open('interrupt.txt', 'w')
f2 = open('gps.txt', 'r')

while True:
   # GPIO 23 set up as input. It is pulled up to stop false signals  
   GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)  
  
   print "Make sure you have the camera connected so that when a signal comes"  
   print "it will connect GPIO port 23 (pin 16) to GND (pin 6)\n"  
   #raw_input("Press Enter when ready\n>")  
  
   print "Waiting for voltage drop on port 23\n"  
   # program is waiting for falling edge 

   try:  
       GPIO.wait_for_edge(23, GPIO.FALLING)  
	   if GPIO.IN == True:
          f.write('Voltage drop detected, getting GPS-Time\n')
          f.flush()
	   
   except KeyboardInterrupt:  
       GPIO.cleanup()       # clean up GPIO on CTRL+C exit  
   GPIO.cleanup()           # clean up GPIO on normal exit 

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# Datei file einlesen
def readfile(file):
	f = codecs.open(file, 'r', 'utf-8')
	lines = list()
	try:
		for line in f:
			lines.append(line.strip())
	finally:
		f.close()
	return lines

# Den Inhalt von data in file schreiben
def writefile(file, data):
	f = codecs.open(file, 'w', 'utf-8')
	for line in data:
		f.write(line)
		f.write('\n')
	f.close()

Code: Alles auswählen

#!/usr/bin/env python2.7  

import RPi.GPIO as GPIO  
GPIO.setmode(GPIO.BCM)  

# Datei file einlesen
def readfile(file_path):
    with codecs.open(file_path, 'r', 'utf-8') as file:
        return file.readlines()

# Den Inhalt von data in file schreiben
def writefile(file_path, data):
    with codecs.open(file_path, 'a', 'utf-8') as file:
        #using a for append, if w, the file will only containg
        #the last written line
        file.writelines(data)
        #data must be some kind of sequence like a list

while True:
    # GPIO 23 set up as input. It is pulled up to stop false signals  
    GPIO.setup(23, GPIO.IN, pull_up_down=GPIO.PUD_UP)  
    print "Make sure you have the camera connected so that when a signal comes"  
    print "it will connect GPIO port 23 (pin 16) to GND (pin 6)\n"  
    #raw_input("Press Enter when ready\n>")  
    print "Waiting for voltage drop on port 23\n"  
    # program is waiting for falling edge
    try:
        GPIO.wait_for_edge(23, GPIO.FALLING)  
        if GPIO.IN == True:
            #interrupt.write('Voltage drop detected, getting GPS-Time\n')
            #interrupt.flush()
            #read gps.txt and append content to interrupt.txt
            writefile("interrupt.txt", readfile("gps.txt"))
    finally:
        GPIO.cleanup() # always clean GPIO

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def readfile(filename):
    with codecs.open(filename, 'r', 'utf-8') as f:
        return [line.strip() for line in f]

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import datetime from datetime
dt = datetime.now()
dt.microsecond
print dt

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import time
milliseconds = int(round(time.time()*1000))
print milliseconds

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In [9]: import datetime

In [10]: datetime.datetime.now().microsecond
Out[10]: 836896

In [11]: import time

In [12]: time.time()
Out[12]: 1389784605.812602

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with open(filename, 'w') as fh:
    while True:
        fh.write('{}\n'.format(datetime.datetime.today()))
        fh.flush()

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while True
    with open(filename, 'a') as fh:
        fh.write('{}\n'.format(datetime.datetime.today()))