commit 10/22/2015

cell_connection.py

@@ -0,0 +1,83 @@
+__author__ = 'asc'
+
+from lib.sim900.gsm import SimGsm, SimGsmPinRequestState
+from lib.sim900.imei import SimImeiRetriever
+import serial
+import logging
+import sys
+
+def initializeUartPort(
+        portName = "/dev/ttyAMA0",
+        baudrate = 9600,
+        bytesize = serial.EIGHTBITS,
+        parity   = serial.PARITY_NONE,
+        stopbits = serial.STOPBITS_ONE,
+        timeout  = 0
+    ):
+
+    port = serial.Serial()
+
+    #tuning port object
+    port.port         = portName
+    port.baudrate     = baudrate
+    port.bytesize     = bytesize
+    port.parity       = parity
+    port.stopbits     = stopbits
+    port.timeout      = timeout
+
+    return port
+
+def initializeLogs(loggerLevel, consoleLoggerLevel):
+    #initializing logging formatter
+    formatter = logging.Formatter('[%(asctime)s] %(levelname)s: %(message)s')
+
+    #initializing logger
+    logger = logging.getLogger(__name__)
+    logger.setLevel(loggerLevel)
+
+    #initializing console handler for logging
+    consoleLogger = logging.StreamHandler(sys.stdout)
+    consoleLogger.setLevel(consoleLoggerLevel)
+    consoleLogger.setFormatter(formatter)
+
+    #adding console appender
+    logger.addHandler(consoleLogger)
+
+    return (formatter, logger, consoleLogger,)
+
+def baseOperations(port, logger):
+    #class for general functions
+    gsm = SimGsm(port, logger)
+
+    #opening COM port
+    logger.info("opening port")
+    if not gsm.openPort():
+        logger.error("error opening port: {0}".format(gsm.errorText))
+        return None
+
+    #initializing session with SIM900
+    logger.info("initializing SIM900 session")
+    if not gsm.begin(5):
+        logger.error("error initializing session: {0}".format(gsm.errorText))
+        return None
+
+    logger.debug("checking PIN state")
+    if gsm.pinState != SimGsmPinRequestState.NOPINNEEDED:
+        logger.debug("PIN needed, entering")
+        if gsm.pinState == SimGsmPinRequestState.SIM_PIN:
+            if not gsm.enterPin("1111"):
+                logger.error("error entering PIN")
+    else:
+        logger.debug("PIN OK")
+
+    #retrieving IMEI
+    sim = SimImeiRetriever(port, logger)
+    logger.info("retrieving IMEI")
+    imei = sim.getIMEI()
+    if imei is None:
+        logger.error("error retrieving IMEI: {0}".format(sim.errorText))
+        return None
+
+    logger.info("IMEI = {0}".format(imei))
+
+    return (gsm, imei)