log8610.c

/*  open8610 - log8610.c
 *
 *  Version 1.10
 *
 *  Control WS8610 weather station
 *
 *  Copyright 2003-2005, Kenneth Lavrsen, Grzegorz Wisniewski, Sander Eerkes
 *  2006-7 Philip Rayner, Laurent Chauvin
 *
 *  This program is published under the GNU General Public license
 */

#include "rw8610.h"

/********************************************************************
 * print_usage prints a short user guide
 *
 * Input:   none
 *
 * Output:  log the last history record to STDOUT as well as a file
 *
 * Returns: exits program
 *
 ********************************************************************/
void print_usage(void)
{
    printf("\n");
    printf("log8610 - Read and interpret data from WS-8610 weather station\n");
    printf("and write it to STDOUT as well as a log file. Perfect for a cron driven task.\n");
    printf("(C)2003 Kenneth Lavrsen.\n");
    printf("(C)2005 Grzegorz Wisniewski,Sander Eerkes. (Version alfa)\n");
    printf("(C)2006-7 Phil Rayner.\n");
    printf("(C)2007 Laurent Chauvin.\n");
    printf("This program is released under the GNU General Public License (GPL)\n\n");
    printf("Usage:\n");
    printf("Save current data to logfile:  log8610 filename config_filename\n");
    exit(0);
}

/********** MAIN PROGRAM ************************************************
 *
 * This program reads current weather data from a WS8610
 * and writes the data to a log file. There's a little difficulty finding it
 * since only history is saved to memory and no value yet appears to have
 * current reading data
 *
 * Just run the program without parameters for usage.
 *
 * It takes two parameters. The first is the log filename with path
 * The second is the config file name with path
 * If this parameter is omitted the program will look at the default paths
 * See the open8610.conf file for info
 *
 ***********************************************************************/
int main(int argc, char *argv[])
{
    WEATHERSTATION ws;
    FILE *fileptr;
    unsigned char logline[1024] = "";
    char str[50];
    char datestring[100];        //used to hold the date stamp for the log file
    time_t basictime;
    struct history_record hr;
    int o_count;

    get_configuration(&config, argv[2]);

    /* Get log filename. */

    if (argc < 2 || argc > 3)
    {
        print_usage();
    }

    fileptr = fopen(argv[1], "a+");
    if (fileptr == NULL)
    {
        printf("Cannot open file %s\n",argv[1]);
        exit(-1);
    }

    ws = open_weatherstation(config.serial_device_name);

    if ((o_count = outdoor_count(ws)) == -1)
    {
        printf("Cannot get count of outdoor sensors\n");
        fclose(fileptr);
        close_weatherstation(ws);
        exit(-1);
    }

    read_last_history_record(ws, &hr, o_count);

    close_weatherstation(ws);


    /* READ TEMPERATURE INDOOR */
    sprintf(logline,"%sTi: %s | ", logline, temp2str(hr.Temp[0], "%.1f", str));

    /* READ RELATIVE HUMIDITY INDOOR */
    sprintf(logline,"%sHi: %s | ", logline, RH2str(hr.RH[0], "%d", str));

    /* READ TEMPERATURE OUTDOOR */
    sprintf(logline,"%sTo1: %s | ", logline, temp2str(hr.Temp[1], "%.1f", str));

    /* READ RELATIVE HUMIDITY OUTDOOR */
    sprintf(logline,"%sHo1: %s | ", logline, RH2str(hr.RH[1], "%d", str));

    /* READ SECOND TEMPERATURE OUTDOOR */
    sprintf(logline,"%sTo2: %s | ", logline, temp2str(hr.Temp[2], "%.1f", str));

    /* READ SECOND RELATIVE HUMIDITY OUTDOOR */
    sprintf(logline,"%sHo2: %s | ", logline, RH2str(hr.RH[2], "%d", str));

    /* READ THIRD TEMPERATURE OUTDOOR */
    sprintf(logline,"%sTo3: %s | ", logline, temp2str(hr.Temp[3], "%.1f", str));

    /* READ THIRD RELATIVE HUMIDITY OUTDOOR */
    sprintf(logline,"%sHo3: %s | ", logline, RH2str(hr.RH[3], "%d", str));

    /* GET TIME STAMP OF LAST HISTORY RECORD */
    sprintf(logline,"%s%s", logline, ctime(&hr.time_stamp));

    /* GET DATE AND TIME FOR LOG FILE, PLACE BEFORE ALL DATA IN LOG LINE */
    time(&basictime);
    strftime(datestring,sizeof(datestring),"%d/%m %H:%M:%S |",
             localtime(&basictime));

    // Print out and leave
    printf("%s %s",datestring, logline);
    fprintf(fileptr,"%s %s",datestring, logline);

    fclose(fileptr);

    exit(0);
}