static extern int nmea_parse(ref nmeaPARSER parser, string buff, int buff_sz, ref nmeaINFO info);
//根据解码结果更新gps信息
private void UpdateInfo(ref nmeaINFO gpsInfo)
{
nmeaTIME beiJingTime = new nmeaTIME();
//转换成北京时间
GMTconvert(ref gpsInfo.utc, ref beiJingTime, 8, 1);
timeLabel.Content = Convert.ToString(beiJingTime.year) + "年" + Convert.ToString(beiJingTime.mon) + "月" + Convert.ToString(beiJingTime.day) + "日" + Convert.ToString(beiJingTime.hour) + ":" + Convert.ToString(beiJingTime.min) + ":" + Convert.ToString(beiJingTime.sec);
//经度
longitudeLabel.Content = Convert.ToString(DegreeConvert(gpsInfo.lon)) + " E";
//纬度
latitudeLabel.Content = Convert.ToString(DegreeConvert(gpsInfo.lat)) + " N";
elevatiionLabel.Content = Convert.ToString(gpsInfo.elv) + " 米";
speedLabel.Content = Convert.ToString(gpsInfo.speed) + " km/h";
directionLabel.Content = Convert.ToString(gpsInfo.declination);
switch (gpsInfo.sig)
{
case 0:
signalLevalLabel.Content = "未定位";
break;
case 1:
signalLevalLabel.Content = "标准GPS定位";
break;
case 2:
signalLevalLabel.Content = "差分GPS定位";
break;
default:
break;
}
switch (gpsInfo.fix)
{
case 1:
operationModeLabel.Content = "未定位";
break;
case 2:
operationModeLabel.Content = "2D定位";
break;
case 3:
operationModeLabel.Content = "3D定位";
break;
default:
break;
}
sateliteInView.Content = Convert.ToString(gpsInfo.satinfo.inview) + " 颗";
sateliteInUse.Content = Convert.ToString(gpsInfo.satinfo.inuse) + " 颗";
positionPrecisionLabel.Content = Convert.ToString(gpsInfo.PDOP);
horizontalPrecisionLabel.Content = Convert.ToString(gpsInfo.HDOP);
verticalPrecisionLabel.Content = Convert.ToString(gpsInfo.VDOP);
if (baiDuMap.IsLoaded)
{
//非零时才作标注
if (gpsInfo.lon != 0 && gpsInfo.lat != 0)
{
//调用javascritpt函数标注地图
WebBrowser mapWB = (WebBrowser)baiDuMap.Content;
mapWB.InvokeScript("theLocation", new object[] { DegreeConvert(gpsInfo.lon), DegreeConvert(gpsInfo.lat) });
}
}
}
static extern void nmea_zero_INFO(ref nmeaINFO info);
