| 4800 baud rate, output per full-time GPS data. The module uses MMCX GPS antenna interface, data line interface for the 6 line connectors, cable output, the use of simple, ordinary conditions only need to use three output lines, the first pin connection is 3.5 ~ 5.5V DC power supply , the fifth leg is the power, the second line of the foot is the output of GPS, which is the serial port of TTL level signals, high is greater than 2.4V, low is less than 0.4V, the output driver to the 2mA, directly and microcontroller interface. If only the use of acquiescence set, the microcontroller reads data only from the module can be.
2.1 GPS location data accepted
Bu tacit condition, GPS module SIRF star III accepted a position data per second output, usually $ GPRMC streamline the data format, the data includes the purpose of latitude, longitude, speed (knot), movement direction angle, year, month, when the minutes, seconds, milliseconds, location data is valid or invalid, and other important information. Statement format is as follows:
$ GPRMC, <1>, <2>, <3>, <4>, <5>, <6>, <7>, <8>, <9>, <10>,, <12>, * hh
Needs only to know the location information, so in practical application to read only one of the <1> to <6> can be.
<1>: local time on behalf of UTC. Format is "when every minute", hours, minutes and seconds are two.
<2>: working on behalf of the state. "A" indicates that the data available, "V" indicated its acceptance of alarms, data not available.
<3>: Representative latitude data. The format of "sub-sub-degree level. Points points points points."
<4>: Latitude hemisphere representatives for the "N" or "S".
<5>: Representative longitude data. Format & ld
quo; degrees degrees minutes minutes. Sub-sub-sub-sub. "
<6>: Representative Longitude hemisphere, as the "E" or "
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Last data update: 10.12.2011