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authorEric S. Raymond <esr@thyrsus.com>2005-02-22 23:03:19 +0000
committerEric S. Raymond <esr@thyrsus.com>2005-02-22 23:03:19 +0000
commitcedb6d3f512888f27e242492bb5491a96152f85f (patch)
tree983bcc85a4c6e39a307e2aef2dbc35adaf77cb7a /gps.py
parent4d9936d088e6543298bec5b373d64ce251b2e392 (diff)
downloadgpsd-cedb6d3f512888f27e242492bb5491a96152f85f.tar.gz
Move SiRF binary class from gps.py to gpsd.py.
Diffstat (limited to 'gps.py')
-rwxr-xr-xgps.py57
1 files changed, 0 insertions, 57 deletions
diff --git a/gps.py b/gps.py
index f203aacd..41a7ef28 100755
--- a/gps.py
+++ b/gps.py
@@ -312,63 +312,6 @@ METERS_TO_FEET = 3.2808399
METERS_TO_MILES = 0.00062137119
KNOTS_TO_MPH = 1.1507794
-# SirF-II control code
-
-class SiRF:
- def transport(payload):
- msg = '\xa0'
- msg += '\xa2'
- msg += chr(len(payload) >> 8)
- msg += chr(len(payload) & 0xff)
- msg += payload
-
- checksum = 0
- for ch in payload:
- checksum += ord(ch);
- checksum &= 0x7fff
-
- msg += chr((checksum >> 8) & 0xff00)
- msg += chr(checksum & 0x00ff)
- msg += '\xb0'
- msg += '\xb3'
- return msg
- transport = staticmethod(transport)
-
- def to_NMEA(baudrate):
- "Generate a SiRF binary protocol command to switch back to NMEA."
- switcher = [
- '\x81', # Byte 0 = 0x81: Switch to NMEA command
- '\x02', # Byte 1 = 0x02: Leave debug-message switch as it is.
- '\x01', # Byte 2 = 0x01: Enable GPGGA at 1-second interval
- '\x01', # Byte 3 = 0x01: GPGGA checksum enable
- '\x01', # Byte 4 = 0x01: Enable GPGLL at 1-second interval
- '\x01', # Byte 5 = 0x01: GPGLL checksum enable
- '\x01', # Byte 6 = 0x05: Enable GPGSA at 5-second interval
- '\x01', # Byte 7 = 0x01: GPGSA checksum enable
- '\x05', # Byte 8 = 0x05: Enable GPGSV at 5-second interval
- '\x01', # Byte 9 = 0x01: GPGSV checksum enable
- '\x00', # Byte 10 = 0x05: Disable GPMSS
- '\x00', # Byte 11 = 0x01: GPMSS checksum disable
- '\x01', # Byte 12 = 0x01: Enable GPRMC at 1-second interval
- '\x01', # Byte 13 = 0x01: GPRMC checksum enable
- '\x01', # Byte 14 = 0x01: Enable GPVTG at 1-second interval
- '\x01', # Byte 15 = 0x01: GPVTG checksum enable
- '\x00', # Byte 16 = 0x00: Unused
- '\x00', # Byte 17 = 0x00: Unused
- '\x00', # Byte 18 = 0x00: Unused
- '\x00', # Byte 19 = 0x00: Unused
- '\x00', # Byte 20 = 0x00: Unused
- '\x00', # Byte 21 = 0x00: Unused
- ]
- switcher += [chr(baudrate >> 8), chr(baudrate & 0x0ff)]
- return SiRF.transport("".join(switcher))
- to_NMEA = staticmethod(to_NMEA)
-
- def reset():
- "Generate a GPS reset command."
- return SiRF.transport("\x85\x00\x00\x00\x00\x00\x00\x00\x00")
- reset = staticmethod(reset)
-
# EarthDistance code swiped from Kismet and corrected
# (As yet, this stuff is not in the libgps C library.)