betaflight-configurator/tabs/gps.js

function tab_initialize_gps () {
    ga_tracker.sendAppView('GPS Page');
    GUI.active_tab = 'gps';
    
    send_message(MSP_codes.MSP_RAW_GPS, MSP_codes.MSP_RAW_GPS, false, function() {
        $('#content').load("./tabs/gps.html", function() {
            // enable data pulling
            GUI.interval_add('gps_pull', function() {
                // Update GPS data
                $('.GPS_info td.alt').html(GPS_DATA.alt + ' m');
                $('.GPS_info td.lat').html((GPS_DATA.lat / 10000000).toFixed(4) + ' deg');
                $('.GPS_info td.lon').html((GPS_DATA.lon / 10000000).toFixed(4) + ' deg');
                $('.GPS_info td.speed').html(GPS_DATA.speed + ' cm/s');
                $('.GPS_info td.sats').html(GPS_DATA.numSat);
                $('.GPS_info td.distToHome').html(GPS_DATA.distanceToHome + ' m');
                
                // Update GPS Signal Strengths
                var e_ss_table = $('div.GPS_signal_strength table tr:not(.titles)');
                
                for (var i = 0; i < GPS_DATA.chn.length; i++) {
                    var row = e_ss_table.eq(i);

                    $('td', row).eq(0).html(GPS_DATA.svid[i]);
                    $('td', row).eq(1).html(GPS_DATA.quality[i]);
                    $('td', row).eq(2).find('progress').val(GPS_DATA.cno[i]);
                }
                
                send_message(MSP_codes.MSP_STATUS, MSP_codes.MSP_STATUS);
                send_message(MSP_codes.MSP_RAW_GPS, MSP_codes.MSP_RAW_GPS);
                send_message(MSP_codes.MSP_GPSSVINFO, MSP_codes.MSP_GPSSVINFO);
            }, 75, true);
        });
    });
}