RDS Decoder Psudocode (See: http://mediarealm.com.au/articles/2013/05/parsing-rds-group-data-with-pira-p175-and-python/ for more details and explanation of what's happening)

gistfile1.py

while True:
    line = ser.readline()
        if (line.find("-") < 0) and (line.__len__() > 16):
            hexdata = line.rstrip()

            #We need five bits to detect the group type, so turn it into binary:
            binaryLine = bin(int(hexdata, 16))[2:].zfill(64)

            #RadioText-A:
            if binaryLine[16:21] == "00100":
                #current RadioText-A Start Position:
                position = int(bin(int(hexdata[7:8], 16))[2:].zfill(4), 2)

                text[position * 4] = hexdata[8:].decode('hex')[:1]
                text[position * 4 + 1] = hexdata[8:].decode('hex')[1:2]
                text[position * 4 + 2] = hexdata[8:].decode('hex')[2:3]
                text[position * 4 + 3] = hexdata[8:].decode('hex')[3:4]

            # PS (Name of the station):
            elif binaryLine[16:21] == "00000":
                #work out the starting position for this group's PS
                psPos = int(bin(int(hexdata[7:8], 16))[2:].zfill(2)[2:4], 2)
                ps[psPos * 2] = hexdata[8:].decode('hex')[2:3]
                ps[psPos * 2 + 1] = hexdata[8:].decode('hex')[3:4]

            print text
            print ps