source: tmcsimulator/branches/FEPSimulator/network.h @ 219

#ifndef __NETWORK_H_INCLUDED__
#define __NETWORK_H_INCLUDED__

#include <stdlib.h>
#include <math.h>
#include <vector>

using namespace std;

/*** CONSTANTS ***/
const int Fixed_Byte_To_Checksum = 25; // the first byte is not considered 
                                       //in the calculation of "BYTE 2"
const int CONTROL_DATA_LEN = 27;

// loop detector / lane type arrays
char * const dp5[8] = { "ML_1", "ML_2", "ML_3", "ML_4", "ML_5",
                                                "ML_6", "HOV_Lane", "FYW_Conn"};
char * const dp6[8] = { "OS_1", "OS_2", "OS_3", "OS_4", "OS_5",
                                                "OS_6", "COLL_DIST_2", "COLL_DIST_OFF"};
char * const dp7[8] = { "DEMAND", "PASSAGE", "QUEUE", "RAMP_ON",
                                                "RAMP_OFF", "RAMP_HOV", "COLL_DIST_1", "COLL_DIST_ON"};
char * const dp8[8] = { "SD_1", "SD_2", "SD_3", "SD_4", "SD_5",
                                                "SD_6", "Pass_Vol_Count", "X"};

// FEP line: Represents a serial communication line from field stations to the 
// An FEP Line has several Loop Detector Stations (Stations) connected)
typedef struct fep_line FEP_LINE;
struct  fep_line
{
        int             lineNum;
        vector<long>    lds;
        vector<long>    ldsIndex;       // location in ldsMap

        short   count;  // actual count from caltrans
        int     schedule;
        int     lineInfo;
        long    systemKey;
        long    globalSeq;
        long    schedleSeq;
};

// Loop Detector: A single sensor that detects the volume, occupancy, and speed
// in a single highway lane
typedef struct loop LOOP;
struct loop
{
    // meta data
    long loopID;
    char *loop_loc;
    
    // dynamic data
    int vol;
    float occ;
    double spd;
};

// Loop detector station: A single field station that contains multiple loops at
// a location
typedef struct Station STATION;
struct  Station
{
        // Each lds has its own line_num and drop (Caltrans use)
        long    lds;
        short   line_num;
        short   drop;
        
        vector<LOOP*> loops;

        // LDS data
        unsigned char   *dataPack;
        int             length;         // total length of data (max: 87)
        int             pos;            // pointer for data preparation
        int             MlTotVol;       // each 30 sec, the following will be updated
        int             OppTotVol;      // each 30 sec, the following will be updated
};

// A helper structure used to pack the volume and occupancy at a loop into
// a two byte message
typedef struct volOcc VOLOCC;
struct  volOcc
{
   char high;
   char low;
};

#endif