boswatch.decoder.fmsDecoder.FmsDecoder Class Reference

FMS decoder class. More...

Static Public Member Functions
def	decode (data)
	Decodes FMS.

Detailed Description

FMS decoder class.

This class decodes FMS data.
First step is to validate the data and _check if the format is correct.
In the last step a valid BOSWatch packet is created and returned

Member Function Documentation

decode()

def boswatch.decoder.fmsDecoder.FmsDecoder.decode (   data )

static

Decodes FMS.

    @param data: FMS for decoding
    @return BOSWatch FMS packet or None

    def decode(data):
        r"""!Decodes FMS
 
        @param data: FMS for decoding
        @return BOSWatch FMS packet or None"""
        if "CRC correct" in data:
            service = data[19]
            country = data[36]
            location = data[61:63]
            vehicle = data[72:76]
            status = data[84]
            direction = data[101]
            directionText = data[103:110]
            tacticalInfo = data[114:117]
            fms_id = service + country + location + vehicle + status + direction
 
            if re.search("[0-9a-f]{8}[0-9a-f][01]", fms_id):
                logging.debug("found valid FMS")
 
                bwPacket = Packet()
                bwPacket.set("mode", "fms")
                bwPacket.set("fms", fms_id)
                bwPacket.set("service", service)
                bwPacket.set("country", country)
                bwPacket.set("location", location)
                bwPacket.set("vehicle", vehicle)
                bwPacket.set("status", status)
                bwPacket.set("direction", direction)
                bwPacket.set("directionText", directionText)
                bwPacket.set("tacticalInfo", tacticalInfo)
 
                return bwPacket
 
            logging.warning("no valid FMS")
            return None
        logging.warning("CRC Error")
        return None