%--- Include folders with functions ---------------------------------------
addpath include             % The software receiver functions
addpath geoFunctions        % Position calculation related functions
%% Clean up the environment first =========================================
%%clc; close all; %
format ('compact');
format ('long', 'g');clc

%--- Include folders with functions ---------------------------------------
addpath include
fprintf('-------------------------------\n\n');
%% Initialize the setting
global settings;
settings = initSettings_IQ();
disp('  ');
fprintf('Probing data (%s)...\n', settings.fileName)
[fid, message]  = fopen(settings.fileName, 'rb');

%% Acquisition ============================================================
fseek(fid, settings.skipNumberOfBytes, 'bof');
tmp = fread(fid, 2*11*settings.samplesPerCode, settings.dataType)';
%tmp=tmp-127.5;
data=tmp(1:2:end)+1i*tmp(2:2:end);
hist(tmp(1:2:end),20); grid on;
xlabel('Bin');
ylabel('Number in Bin');

%--- Do the acquisition -------------------------------------------
disp ('Acquiring satellites...');
acqResults = acquisitionIQ(data, settings);
%acqResults = acquisitionIQ_weak(data, settings);
plotAcquisition(acqResults);
% acqResults.carrFreq(1)=-1e3;
% acqResults.codePhase(1)=1;
% acqResults.peakMetric(1)=2;

% plotAcquisition(acqResults);

settings.numberOfChannels = min([settings.numberOfChannels, sum(acqResults.peakMetric > settings.acqThreshold)]);
if (any(acqResults.peakMetric > settings.acqThreshold))
    channel = preRun(acqResults, settings);
%     channel(1).PRN=1;
%     channel(1).acquiredFreq=acqResults.carrFreq(1);
%     channel(1).codePhase=acqResults.codePhase(1);
%     channel(1).status='T';
%     settings.numberOfChannels=1;
    showChannelStatus(channel, settings);
else
    % No satellites to track, exit
    disp('No GNSS signals detected, signal processing finished.');
    trackResults = [];
    fclose(fid);
    return;
end
%% Track the signal =======================================================
startTime = now;
disp (['   Tracking started at ', datestr(startTime)]);
for cidx=1:size(channel,2)
    if channel(cidx).acquiredFreq >settings.samplingFreq/2;
        channel(cidx).acquiredFreq=channel(cidx).acquiredFreq-settings.samplingFreq;
    end;
end;
showChannelStatus(channel, settings);
%channel.codePhase=3351 ;
[trackResults, channel] = tracking_V0_IQ(fid, channel, settings);

% Close the data file
if fid>0
 fclose(fid);
end;
    disp(['   Tracking is over (elapsed time ', ...
                                        datestr(now - startTime, 13), ')'])     

    % Auto save the acquisition & tracking results to a file to allow
    % running the positioning solution afterwards.
    disp('   Saving Acq & Tracking results to file "trackingResults.mat"')
    save('trackingResults', ...
                      'trackResults', 'settings', 'acqResults', 'channel');                  

%% Calculate navigation solutions =========================================
    disp('   Calculating navigation solutions...');
    navSolutions = postNavigation0(trackResults, settings);
   %navSolutions = postNavigationSnapshot(trackResults, settings);

    disp('   Processing is complete for this data block');

%% Plot all results ===================================================
    disp ('   Ploting results...');
    if settings.plotTracking
        plotTracking(1:settings.numberOfChannels, trackResults, settings);
    end

    plotNavigation(navSolutions, settings);

    disp('Post processing of the signal is over.');