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/**
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* SaaaatInc
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* author Malakhov V.
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* version 1.0 - 05/02/2007
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*/
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#include "InclinationInfo.h"
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#include <mcmd/McmdEvent.h>
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#include <mcmd/McmdRecord.h>
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#include <EventHeader.h>
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#include <PscuHeader.h>
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#include "RunHeaderEvent.h"
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#include <TTree.h>
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#include "sgp4.h"
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#include "TH2F.h"
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#include "TFrame.h"
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#include "TGraph.h"
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#include "TCanvas.h"
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#include <TDatime.h>
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#include <TFile.h>
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#include <TTimeStamp.h>
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#include "TString.h"
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#include "TObjString.h"
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#include "TPaletteAxis.h"
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#include "TROOT.h"
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#include <sys/stat.h>
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#include <fstream>
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#include <iostream>
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#include "OrbitalRate.h"
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//#include "TMatrixD.h"
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using namespace std;
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int main(int argc, char* argv[]){
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TString *rootFile = NULL;
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TString outDir = "./";
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TString mapFile = "";
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TString tleFile = "";
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int offDate = 20060928;
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//int offDate = 20060614;
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int offTime = 210000;
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if (argc < 2){
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printf("You have to insert at least the file to analyze and the mapFile \n");
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printf("Try '--help' for more information. \n");
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exit(1);
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}
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if (!strcmp(argv[1], "--help")){
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//printf( "Usage: OrbitRate FILE -map mapFile [OPTION] \n");
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//printf( "mapFile have to be a mercator map image [gif|jpg|png] \n");
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printf( "\t --help Print this help and exit \n");
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printf( "\t -tle[File path] Path where to find the tle infos \n");
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printf( "\t\tUse the script retrieve_TLE.sh to create the file.\n ");
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printf( "\t -outDir[path] Path where to put the output without last directory.\n");
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printf( "\t -offDate Date of resetting of the Resource counter [format YYMMDD (UTC date) default 20060928] \n");
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printf( "\t -offTime Time of resetting of the Resource counter [format HHMMSS (UTC date) default 210000] \n");
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exit(1);
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}
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// Ok, here we should have at least one root file. We check that
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// the filename contains ".root".
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if(strstr(argv[1], ".root"))
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rootFile = new TString(argv[1]);
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else {
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cerr << "OrbitalRate: no root file." << endl << "See --help" << endl;
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exit(EXIT_FAILURE);
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}
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for (int i = 2; i < argc; i++){
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if (!strcmp(argv[i], "-outDir")){
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if (++i >= argc){
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printf( "-outDir needs arguments. \n");
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printf( "Try '--help' for more information. \n");
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exit(1);
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} else {
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outDir = argv[i];
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continue;
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}
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}
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if (!strcmp(argv[i], "-tle")){
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if (++i >= argc){
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printf( "-tle needs arguments. \n");
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printf( "Try '--help' for more information. \n");
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exit(1);
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} else {
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tleFile = argv[i];
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continue;
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}
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}
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if (!strcmp(argv[i], "-offTime")){
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if (++i >= argc){
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printf( "-offTime needs arguments. \n");
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printf( "Try '--help' for more information. \n");
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exit(1);
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}
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else{
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offTime = atol(argv[i]);
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continue;
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}
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}
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if (!strcmp(argv[i], "-offDate")){
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if (++i >= argc){
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printf( "-offDate needs arguments. \n");
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printf( "Try '--help' for more information. \n");
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exit(1);
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}
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else{
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offDate = atol(argv[i]);
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continue;
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}
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}
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}
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Rate(rootFile, outDir, mapFile, tleFile, offDate, offTime);
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}
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void Rate(TString *filename, TString outDirectory = "", TString mapFile = "", TString tleFile = "", int offDate = 20060614, int offTime = 210000)
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{
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// **** Offset to temporarily correct the TDatime bug ****/
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// offTime += 10000;
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//********************************************************/
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McmdScan *mcmdReader = new McmdScan();
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pamela::McmdEvent *mcmdev = 0;
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pamela::McmdRecord *mcmdrc = 0;
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pamela::EventHeader *eh = 0;
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pamela::PscuHeader *ph = 0;
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TArrayC *mcmddata;
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pamela::RunHeaderEvent *reh = new pamela::RunHeaderEvent;
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pamela::EventHeader *eH = new pamela::EventHeader;
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Quaternions *L_QQ_Q_l = new Quaternions();
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InclinationInfo *Plux = new InclinationInfo();
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float timesync = 0, obt_timesync = 0;
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ULong64_t nevents = 0;
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stringstream oss;
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Long64_t offsetTime = 0;
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Long64_t timeElapsedFromTLE = 0;
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Long64_t deltaTime = 0, oldtimeElapsedFromTLE = 0;
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bool a_second_is_over;
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// Get a char* to "file" from "/dir1/dir2/.../file.root"
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TString basename;
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basename = ((TObjString*) filename->Tokenize('/')->Last())->GetString(); // we get file.root
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basename = ((TObjString*)basename.Tokenize('.')->First())->GetString(); // we get file
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TFile *rootFile = new TFile(*filename);
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if (rootFile->IsZombie()) printf("The %s file does not exist",basename.Data());
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TString fileName = ((TObjString*)basename.Tokenize('/')->Last())->GetString();
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TString filePath = basename;
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filePath.ReplaceAll(fileName, "");
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filePath.ReplaceAll(".root", "");
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TTree *tr = (TTree*)rootFile->Get("Mcmd");
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nevents = tr->GetEntries();
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tr->SetBranchAddress("Mcmd",&mcmdev);
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tr->SetBranchAddress("Header",&eh);
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ULong_t firstime = 99999999;//ph->GetOrbitalTime();
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UInt_t firstID = 65535;
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ULong_t lastime = 0;//ph->GetOrbitalTime();
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UInt_t lastID = 0;
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for(int ii = 0; ii < nevents; ii++){
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tr->GetEntry(ii);
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ph = eh->GetPscuHeader();
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Int_t tmpSize = mcmdev->Records->GetEntries();
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for (int qq=0; qq < tmpSize; qq++){
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mcmdrc = (pamela::McmdRecord*)mcmdev->Records->At(qq);
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if (mcmdrc->SeqID <= firstID) firstID = mcmdrc->SeqID;
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if (mcmdrc->SeqID >= lastID) lastID = mcmdrc->SeqID;
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if ((int)mcmdrc->ID1 == 226){
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L_QQ_Q_l->fill(mcmdrc->McmdData);
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if (L_QQ_Q_l->time[0] >= lastime) lastime = L_QQ_Q_l->time[0];
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if (L_QQ_Q_l->time[0] <= firstime) firstime = L_QQ_Q_l->time[0];
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}
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};
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}
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TTree *tp = (TTree*)rootFile->Get("RunHeader");
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tp->SetBranchAddress("Header", &eH);
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tp->SetBranchAddress("RunHeader", &reh);
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tp->GetEntry(0);
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ph = eH->GetPscuHeader();
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ULong_t TimeSync = reh->LAST_TIME_SYNC_INFO;
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//Get Orientation information
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TH2F *_L1 = new TH2F("_L1",basename+";OnBoard Time, s; Value of l0",1000,firstime,lastime,1000,-1,1);
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TH2F *_L2 = new TH2F("_L2",basename+";OnBoard Time, s; Value of l1",1000,firstime,lastime,1000,-1,1);
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TH2F *_L3 = new TH2F("_L3",basename+";OnBoard Time, s; Value of l2",1000,firstime,lastime,1000,-1,1);
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TH2F *_L4 = new TH2F("_L4",basename+";OnBoard Time, s; Value of l3",1000,firstime,lastime,1000,-1,1);
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//TH2F *_A1 = new TH2F("_A1",basename,1000,firstime,lastime,1000,-180,180);
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//TH2F *_A2 = new TH2F("_A2",basename,1000,firstime,lastime,1000,-180,180);
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//TH2F *_A3 = new TH2F("_A3",basename,1000,firstime,lastime,1000,-180,180);
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//TH2F *_secID = new TH2F("_secID",basename,1000,firstime,lastime,1000,firstID,lastID);
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TH2F *_Tangazh = new TH2F("Pitch",basename+";OnBoard Time, s;Angel of pith, deg",1000,firstime,lastime,1000,-20,20);
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TH2F *_Ryskanie = new TH2F("Yaw",basename+";OnBoard Time, s;Angel of yaw, deg",1000,firstime,lastime,1000,-100,-80);
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TH2F *_Kren = new TH2F("Roll",basename+";OnBoard Time, s;Angel of roll, deg",1000,firstime,lastime,1000,-50,50);
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// Open the root file.
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rootFile = new TFile(filename->Data());
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if (rootFile->IsZombie()) {
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printf("The file %s does not exist\n", (filename->Data()));
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exit(EXIT_FAILURE);
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}
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// Look for a timesync in the TFile rootFile. We also get the obt
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// of the timesync mcmd.
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bool err;
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err = lookforTimesync(rootFile, ×ync, &obt_timesync);
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if(!err) {
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cerr << "Warning!!! No timesync info has been found in the file "
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<< filename->Data() << endl;
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exit(EXIT_FAILURE);
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}
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//Get the Julian date of the Resours offset
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TDatime offRes = TDatime(offDate, offTime);
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// Add to the Resours Offset the timesync. This is now the date at
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// the moment of the timesync.
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ULong_t TH=offRes.Convert();
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//cout<<"TH= "<<TH/86400<<"\n";
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offRes.Set(offRes.Convert() + (UInt_t) timesync);
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// Now I need a pointer to a cTle object. The class misses a
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// constructor without arguments, so we have to give it a dummy TLE.
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string str1 = "RESURS-DK 1";
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string str2 = "1 29228U 06021A 06170.19643714 .00009962 00000-0 21000-3 0 196";
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string str3 = "2 29228 069.9363 054.7893 0167576 127.4359 017.0674 15.31839265 604";
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cTle *tle1 = new cTle(str1, str2, str3);
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// If we have to use a TLE file, call getTle().
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if (tleFile != "")
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tle1 = getTle(tleFile, offRes);
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cOrbit orbit(*tle1);
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cEci eci;
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cCoordGeo coo;
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// Get the Julian date of the TLE epoch
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string datetime = getTleDatetime(tle1);
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TDatime tledate = TDatime(datetime.c_str());
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tr = (TTree*)rootFile->Get("Mcmd");
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nevents = tr->GetEntries();
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tr->SetBranchAddress("Mcmd", &mcmdev);
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tr->SetBranchAddress("Header", &eh);
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// oss.str("");
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// oss << basename+".txt";
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// ofstream outputFile;
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// outputFile.open(oss.str().c_str());
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Int_t tmpSize;
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for(UInt_t i = 0; i < nevents; i++) //Fill variables from root-ple
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{
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tr->GetEntry(i);
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tmpSize = mcmdev->Records->GetEntries();
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ph = eh->GetPscuHeader();
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for (Int_t j3 = 0; j3 < tmpSize; j3++){
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mcmdrc = (pamela::McmdRecord*)mcmdev->Records->At(j3);
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if ((int)mcmdrc->ID1 == 226){
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L_QQ_Q_l->fill(mcmdrc->McmdData);
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Plux->QuaternionstoAngle(*L_QQ_Q_l);
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for (Int_t oi = 0; oi < 6; oi++){
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//if ((Int_t)L_QQ_Q_l->CodeErrQua[oi]==0){
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_L1->Fill(L_QQ_Q_l->time[oi],L_QQ_Q_l->quat[oi][0]);
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_L2->Fill(L_QQ_Q_l->time[oi],L_QQ_Q_l->quat[oi][1]);
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_L3->Fill(L_QQ_Q_l->time[oi],L_QQ_Q_l->quat[oi][2]);
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_L4->Fill(L_QQ_Q_l->time[oi],L_QQ_Q_l->quat[oi][3]);
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//outputFile << " " << L_QQ_Q_l->time[oi] << " " << -L_QQ_Q_l->quat[oi][0] << " " << -L_QQ_Q_l->quat[oi][1] << " " << -L_QQ_Q_l->quat[oi][2] << " " << -L_QQ_Q_l->quat[oi][3];
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//_A1->Fill(L_QQ_Q_l->time[oi],Plux->A11);
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//_A2->Fill(L_QQ_Q_l->time[oi],Plux->A12);
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//_A3->Fill(L_QQ_Q_l->time[oi],Plux->A13);
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//outputFile << " " << Plux->A11 << " " << Plux->A12 << " " << Plux->A13;
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//_secID->Fill(L_QQ_Q_l->time[oi],mcmdrc->SeqID);
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timeElapsedFromTLE = TH - (Long64_t) tledate.Convert()+ L_QQ_Q_l->time[oi];
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orbit.getPosition(((double) timeElapsedFromTLE)/60., &eci);
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//outputFile<<" "<< eci.getPos().m_z;//eci.getPos().m_x<<" "<<eci.getPos().m_y<<" "<<eci.getPos().m_z<<" "<<eci.getVel().m_x<<" "<<eci.getVel().m_y<<" "<<eci.getVel().m_z;
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Plux->TransAngle(eci.getPos().m_x,eci.getPos().m_y,eci.getPos().m_z,eci.getVel().m_x,eci.getVel().m_y,eci.getVel().m_z,Plux->A11,Plux->A12,Plux->A13,L_QQ_Q_l->quat[oi][0],L_QQ_Q_l->quat[oi][1],L_QQ_Q_l->quat[oi][2],L_QQ_Q_l->quat[oi][3]);
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_Tangazh->Fill(L_QQ_Q_l->time[oi],Plux->Tangazh);
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_Ryskanie->Fill(L_QQ_Q_l->time[oi],Plux->Ryskanie);
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_Kren->Fill(L_QQ_Q_l->time[oi],Plux->Kren);
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//outputFile<<" "<<Plux->Tangazh<<" "<<Plux->Kren<<" "<<Plux->Ryskanie<<"\n";
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//}
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}
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}
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}
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}
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//outputFile.close();
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TCanvas *c1 = new TCanvas("c1","Quaternions",1200,1600);
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//TCanvas *c2 = new TCanvas("c2","Anglees",1200,1600);
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TCanvas *c4 = new TCanvas("c4","AngleesTRK",1200,1600);
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c1->Divide(1,4);
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//c2->Divide(1,3);
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c4->Divide(1,3);
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c1->cd(1);
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_L1->SetMarkerColor(kBlack);
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_L1->Draw("");
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c1->cd(2);
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_L2->SetMarkerColor(kBlue);
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_L2->Draw("");
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c1->cd(3);
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_L3->SetMarkerColor(kRed);
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_L3->Draw("");
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c1->cd(4);
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_L4->SetMarkerColor(kGreen);
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_L4->Draw("");
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| 353 |
// c1->cd(5);
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// _secID->SetMarkerColor(kYellow);
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// _secID->Draw("");
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/*
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c2->cd(1);
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_A3->SetMarkerColor(kRed);
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_A3->Draw("");
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c2->cd(2);
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_A2->SetMarkerColor(kGreen);
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_A2->Draw("");
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c2->cd(3);
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_A1->SetMarkerColor(13);
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_A1->Draw("");
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*/
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c4->cd(1);
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_Tangazh->SetMarkerColor(142);
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_Tangazh->Draw("");
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c4->cd(2);
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_Ryskanie->SetMarkerColor(226);
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_Ryskanie->Draw("");
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c4->cd(3);
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_Kren->SetMarkerColor(142);
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_Kren->Draw("");
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oss.str("");
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| 382 |
oss << outDirectory+basename+"/"+basename << "_Inclinations_Quaternions.png";
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| 383 |
c1->SaveAs(oss.str().c_str());
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| 384 |
oss.str();
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| 386 |
/* oss.str("");
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| 387 |
oss << basename<< "_Angles.png";
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| 388 |
c2->SaveAs(oss.str().c_str());
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| 389 |
oss.str();
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| 390 |
*/
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| 391 |
oss.str("");
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| 392 |
oss << outDirectory+basename+"/"+basename << "_Inclinations_Angles.png";
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| 393 |
c4->SaveAs(oss.str().c_str());
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| 394 |
oss.str();
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| 395 |
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| 396 |
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| 397 |
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| 398 |
delete _L1;
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| 399 |
delete _L2;
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| 400 |
delete _L3;
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| 401 |
delete _L4;
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| 402 |
|
| 403 |
// delete _A1;
|
| 404 |
// delete _A2;
|
| 405 |
// delete _A3;
|
| 406 |
|
| 407 |
//delete _secID;
|
| 408 |
|
| 409 |
delete _Tangazh;
|
| 410 |
delete _Kren;
|
| 411 |
delete _Ryskanie;
|
| 412 |
|
| 413 |
rootFile->Close();
|
| 414 |
}
|
| 415 |
|
| 416 |
// Get the TLE from tleFile. The right TLE is that one with the
|
| 417 |
// closest previous date to offRes, that is the date at the time of
|
| 418 |
// the first timesync found in the root file.
|
| 419 |
//
|
| 420 |
// Warning: you must use a tle file obtained by space-track.org
|
| 421 |
// querying the database with the RESURS DK-1 id number 29228,
|
| 422 |
// selecting the widest timespan, including the satellite name in the
|
| 423 |
// results.
|
| 424 |
cTle *getTle(TString tleFile, TDatime offRes)
|
| 425 |
{
|
| 426 |
Float_t tledatefromfile, tledatefromroot;
|
| 427 |
fstream tlefile(tleFile.Data(), ios::in);
|
| 428 |
vector<cTle*> ctles;
|
| 429 |
vector<cTle*>::iterator iter;
|
| 430 |
|
| 431 |
|
| 432 |
// Build a vector of *cTle
|
| 433 |
while(1) {
|
| 434 |
cTle *tlef;
|
| 435 |
string str1, str2, str3;
|
| 436 |
|
| 437 |
getline(tlefile, str1);
|
| 438 |
if(tlefile.eof()) break;
|
| 439 |
|
| 440 |
getline(tlefile, str2);
|
| 441 |
if(tlefile.eof()) break;
|
| 442 |
|
| 443 |
getline(tlefile, str3);
|
| 444 |
if(tlefile.eof()) break;
|
| 445 |
|
| 446 |
// We now have three good lines for a cTle.
|
| 447 |
tlef = new cTle(str1, str2, str3);
|
| 448 |
ctles.push_back(tlef);
|
| 449 |
}
|
| 450 |
|
| 451 |
// Sort by date
|
| 452 |
sort(ctles.begin(), ctles.end(), compTLE);
|
| 453 |
|
| 454 |
tledatefromroot = (offRes.GetYear()-2000)*1e3 + (offRes.Convert() - (TDatime(offRes.GetYear(), 1, 1, 0, 0, 0)).Convert())/ (24.*3600.);
|
| 455 |
|
| 456 |
for(iter = ctles.begin(); iter != ctles.end(); iter++) {
|
| 457 |
cTle *tle = *iter;
|
| 458 |
|
| 459 |
tledatefromfile = getTleJulian(tle);
|
| 460 |
|
| 461 |
if(tledatefromroot > tledatefromfile) {
|
| 462 |
tlefile.close();
|
| 463 |
cTle *thisTle = tle;
|
| 464 |
ctles.clear();
|
| 465 |
|
| 466 |
return thisTle;
|
| 467 |
}
|
| 468 |
}
|
| 469 |
|
| 470 |
// File ended withoud founding a TLE with a date after offRes. We'll use the last aviable date.
|
| 471 |
cerr << "Warning: using last available TLE in " << tleFile.Data() << ". Consider updating your tle file." << endl;
|
| 472 |
|
| 473 |
tlefile.close();
|
| 474 |
cTle *thisTle = ctles[ctles.size()-1];
|
| 475 |
ctles.clear();
|
| 476 |
|
| 477 |
return thisTle;
|
| 478 |
}
|
| 479 |
|
| 480 |
|
| 481 |
// Return whether the first TLE is older than the second
|
| 482 |
bool compTLE (cTle *tle1, cTle *tle2)
|
| 483 |
{
|
| 484 |
return getTleJulian(tle1) > getTleJulian(tle2);
|
| 485 |
}
|
| 486 |
|
| 487 |
|
| 488 |
// Return the date of the tle using the format (year-2000)*1e3 +
|
| 489 |
// julian day. e.g. 6364.5 is the 31th Dec 2006 12:00:00.
|
| 490 |
// It does *not* return a cJulian date.
|
| 491 |
float getTleJulian(cTle *tle) {
|
| 492 |
return tle->getField(cTle::FLD_EPOCHYEAR)*1e3 + tle->getField(cTle::FLD_EPOCHDAY);
|
| 493 |
}
|
| 494 |
|
| 495 |
|
| 496 |
// Look for a timesync in the TFile rootFile. Set timesync and
|
| 497 |
// obt_timesync. Returns 1 if timesync is found, 0 otherwise.
|
| 498 |
int lookforTimesync(TFile *rootFile, Float_t *timesync, Float_t *obt_timesync) {
|
| 499 |
*timesync = -1; // will be != -1 if found
|
| 500 |
|
| 501 |
ULong64_t nevents = 0;
|
| 502 |
pamela::McmdRecord *mcmdrc = 0;
|
| 503 |
pamela::McmdEvent *mcmdev = 0;
|
| 504 |
TArrayC *mcmddata;
|
| 505 |
TTree *tr = (TTree*) rootFile->Get("Mcmd");
|
| 506 |
|
| 507 |
tr->SetBranchAddress("Mcmd", &mcmdev);
|
| 508 |
|
| 509 |
nevents = tr->GetEntries();
|
| 510 |
|
| 511 |
// Looking for a timesync. We stop at the first one found.
|
| 512 |
long int recEntries;
|
| 513 |
|
| 514 |
for(UInt_t i = 0; i < nevents; i++) {
|
| 515 |
tr->GetEntry(i);
|
| 516 |
recEntries = mcmdev->Records->GetEntries();
|
| 517 |
|
| 518 |
for(UInt_t j = 0; j < recEntries; j++) {
|
| 519 |
mcmdrc = (pamela::McmdRecord*)mcmdev->Records->At(j);
|
| 520 |
|
| 521 |
if ((mcmdrc != 0) && (mcmdrc->ID1 == 0xE0)) //Is it a TimeSync?
|
| 522 |
{
|
| 523 |
mcmddata = mcmdrc->McmdData;
|
| 524 |
*timesync = (((unsigned int)mcmddata->At(0)<<24)&0xFF000000)
|
| 525 |
+ (((unsigned int)mcmddata->At(1)<<16)&0x00FF0000)
|
| 526 |
+ (((unsigned int)mcmddata->At(2)<<8)&0x0000FF00)
|
| 527 |
+ (((unsigned int)mcmddata->At(3))&0x000000FF);
|
| 528 |
*obt_timesync = (mcmdrc->MCMD_RECORD_OBT)*(1./1000.);
|
| 529 |
|
| 530 |
goto out; // a timesync is found
|
| 531 |
}
|
| 532 |
}
|
| 533 |
}
|
| 534 |
|
| 535 |
out:
|
| 536 |
|
| 537 |
if (*timesync == -1)
|
| 538 |
return 0;
|
| 539 |
else
|
| 540 |
return 1;
|
| 541 |
}
|
| 542 |
|
| 543 |
|
| 544 |
// Return a string like YYYY-MM-DD hh:mm:ss, a datetime format.
|
| 545 |
string getTleDatetime(cTle *tle)
|
| 546 |
{
|
| 547 |
int year, mon, day, hh, mm, ss;
|
| 548 |
double dom; // day of month (is double!)
|
| 549 |
stringstream date; // date in datetime format
|
| 550 |
|
| 551 |
// create a cJulian from the date in tle
|
| 552 |
cJulian jdate = cJulian( 2000 + (int) tle->getField(cTle::FLD_EPOCHYEAR), tle->getField(cTle::FLD_EPOCHDAY));
|
| 553 |
|
| 554 |
// get year, month, day of month
|
| 555 |
jdate.getComponent(&year, &mon, &dom);
|
| 556 |
|
| 557 |
// build a datetime YYYY-MM-DD hh:mm:ss
|
| 558 |
date.str("");
|
| 559 |
day = (int) floor(dom);
|
| 560 |
hh = (int) floor( (dom - day) * 24);
|
| 561 |
mm = (int) floor( ((dom - day) * 24 - hh) * 60);
|
| 562 |
ss = (int) floor( ((((dom - day) * 24 - hh) * 60 - mm) * 60));
|
| 563 |
// ms = (int) floor( (((((dom - day) * 24 - hh) * 60 - mm) * 60) - ss) * 1000);
|
| 564 |
|
| 565 |
date << year << "-" << mon << "-" << day << " " << hh << ":" << mm << ":" << ss;
|
| 566 |
|
| 567 |
return date.str();
|
| 568 |
}
|
| 569 |
|
| 570 |
//
|
| 571 |
// Solve the overflow for anticoincidence because this counter is
|
| 572 |
// stored in 2 bytes so counts from 0 to 65535.
|
| 573 |
//
|
| 574 |
// counter is the actual value.
|
| 575 |
// oldValue is meant to be the previous value of counter.
|
| 576 |
//
|
| 577 |
// Example:
|
| 578 |
// for(...) {
|
| 579 |
// ...
|
| 580 |
// corrected_diff = solve_ac_overflow(oldValueOfTheCounter, actualValue);
|
| 581 |
// ...
|
| 582 |
// }
|
| 583 |
//
|
| 584 |
//
|
| 585 |
// Returns the corrected difference between counter and oldValue and
|
| 586 |
// set oldValue to the value of counter.
|
| 587 |
// Attention: oldValue is a reference.
|
| 588 |
Int_t solve_ac_overflow(Int_t& oldValue, Int_t counter)
|
| 589 |
{
|
| 590 |
Int_t truediff = 0;
|
| 591 |
|
| 592 |
if (counter < oldValue) // overflow!
|
| 593 |
truediff = 0xFFFF - oldValue + counter;
|
| 594 |
else
|
| 595 |
truediff = counter - oldValue;
|
| 596 |
|
| 597 |
oldValue = counter;
|
| 598 |
|
| 599 |
return truediff;
|
| 600 |
}
|
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