#sim808获取定位数据
python语言，树莓派小车
GNNS的AT代码有效，GPS的AT命令返回ERROR,原因未知
##sim808 AT命令意义（GNSS）
AT波特率确认，开机后多发几次AT+IPR=9600更改波特率AT+ECHARGE=1充电AT&W保存设置AT+CPOWD=1关机AT+CBC显示电量 百分比和电压AT+CSQ查询GSM信号质量AT+CGNSPWR=1打开GNSS PowerAT+CGNSSEQDefine the last NMEA sentence that parsedAT+CGNSINFGNSS navigation information parsed from NMEA sentencesAT+CGNSTSTSend data received from GNSS to AT UART
| Message | Description | Possible Talker Identifiers |
|---|---|---|
| GGA | Time, position and fix type data | GP |
| GSA | GNSS receiver operating mode, satellites used in the position solution, and DOP values | GP, GN |
| GSV | Number of GNSS satellites in view satellite ID numbers, elevation, azimuth, & SNR values | GP,GL,GN |
| RMC | Time, date, position, course and speed data | GP,GN |
##返回的GPS数据 单次
+CGNSINF: 1,1,20160921235709.000,30.439608,114.427183,14.900,0.65,201.0,1,,1.2,1.6,0.9,,14,4,,,37,,
连续
$GPGLL,3026.3577,N,11425.6279,E,235943.000,A,A*5B
$GPGSA,A,3,08,27,28,03,30,,,,,,,,2.68,1.36,2.31*0D
$GPGSV,4,1,14,11,77,051,16,01,72,134,22,07,63,219,14,30,58,285,27*71
$GPGSV,4,2,14,08,38,042,41,28,30,316,39,22,16,134,23,17,16,257,20*7E
$GPGSV,4,3,14,03,08,153,31,27,06,060,23,16,03,110,21,09,02,205,*7A
$GPGSV,4,4,14,13,01,313,,193,,,*75
$GPRMC,235943.000,A,3026.3577,N,11425.6279,E,0.00,5.73,210916,,,A*60
$GPVTG,5.73,T,,M,0.00,N,0.00,K,A*3C
$GPGGA,235944.000,3026.3577,N,11425.6279,E,1,5,1.36,42.8,M,-