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      1 #!/usr/bin/python
      2 # Author: Jon Trulson <jtrulson (at] ics.com>
      3 # Copyright (c) 2015 Intel Corporation.
      4 #
      5 # Permission is hereby granted, free of charge, to any person obtaining
      6 # a copy of this software and associated documentation files (the
      7 # "Software"), to deal in the Software without restriction, including
      8 # without limitation the rights to use, copy, modify, merge, publish,
      9 # distribute, sublicense, and/or sell copies of the Software, and to
     10 # permit persons to whom the Software is furnished to do so, subject to
     11 # the following conditions:
     12 #
     13 # The above copyright notice and this permission notice shall be
     14 # included in all copies or substantial portions of the Software.
     15 #
     16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23 
     24 import time, sys, signal, atexit
     25 import pyupm_grovegprs as sensorObj
     26 
     27 # Instantiate a GroveGPRS Module on UART 0
     28 sensor = sensorObj.GroveGPRS(0)
     29 
     30 ## Exit handlers ##
     31 # This stops python from printing a stacktrace when you hit control-C
     32 def SIGINTHandler(signum, frame):
     33 	raise SystemExit
     34 
     35 # This function lets you run code on exit
     36 def exitHandler():
     37 	print "Exiting"
     38 	sys.exit(0)
     39 
     40 # Register exit handlers
     41 atexit.register(exitHandler)
     42 signal.signal(signal.SIGINT, SIGINTHandler)
     43 
     44 # Set the baud rate, 19200 baud is the default.
     45 if (sensor.setBaudRate(19200)):
     46 	print "Failed to set baud rate"
     47 	sys.exit(0)
     48 
     49 
     50 usageStr = ("Usage:\n"
     51 "If an argument is supplied on the command line, that argument is\n"
     52 "sent to the module and the response is printed out.\n\n"
     53 "If no argument is used, then the manufacturer and the current\n"
     54 "saved profiles are queried and the results printed out.\n\n")
     55 print usageStr
     56 
     57 # simple helper function to send a command and wait for a response
     58 def sendCommand(sensor, cmd):
     59         # commands need to be terminated with a carriage return
     60         cmd += "\r";
     61 	sensor.writeDataStr(cmd)
     62 
     63 	# wait up to 1 second
     64 	if (sensor.dataAvailable(1000)):
     65                 print "Returned: ",
     66 		print sensor.readDataStr(1024)
     67 	else:
     68 		print "Timed out waiting for response"
     69 
     70 
     71 if (len(sys.argv) > 1):
     72 	print "Sending command line argument (" + sys.argv[1] + ")..."
     73 	sendCommand(sensor, sys.argv[1])
     74 else:
     75         # query the module manufacturer
     76         print "Querying module manufacturer (AT+CGMI)..."
     77         sendCommand(sensor, "AT+CGMI");
     78 
     79         time.sleep(1);
     80 
     81         # query the saved profiles
     82         print "Querying the saved profiles (AT&V)..."
     83         sendCommand(sensor, "AT&V");
     84 
     85         # A comprehensive list is available from the datasheet at:
     86         # http://www.seeedstudio.com/wiki/images/7/72/AT_Commands_v1.11.pdf
     87