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# SiRF
from ... import nmea
class SRF(nmea.ProprietarySentence):
sentence_types = {}
def __new__(_cls, manufacturer, data):
name = manufacturer + data[0]
cls = _cls.sentence_types.get(name, _cls)
return super(SRF, cls).__new__(cls)
def __init__(self, manufacturer, data):
self.sentence_type = manufacturer + data[0]
super(SRF, self).__init__(manufacturer, data)
class SRF103(SRF):
fields = (
("Subtype", "subtype"),
('Sentence type', 'sentence'),
# 00=GGA
# 01=GLL
# 02=GSA
# 03=GSV
# 04=RMC
# 05=VTG
('Command', 'command'),
# 0=Set
# 1=Query
('Rate', 'rate'),
('Checksum', 'checksum'),
# 0=No, 1=Yes
)
class SRF100(SRF):
fields = (
("Subtype", "subtype"),
('Protocol', 'protocol'),
# 0 = SiRF Binary
# 1 = NMEA
('Baud Rate', 'baud'),
# 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
('Data bits', 'databits'),
# 8 (, 7 in NMEA)
('Stop bits', 'stopbits'),
# 0, 1
('Parity', 'parity'),
# 0, 1=Odd, 2=Even
)
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