--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wh1080.h	Tue Feb 09 13:44:25 2010 +1030
@@ -0,0 +1,187 @@
+/*
+ * WH-1080 data input utility.
+ *
+ * Greg Lehey, 16 November 2009
+ *
+ * $Id: wh1080.h,v 1.9 2010/02/07 03:41:07 grog Exp $
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <math.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <usb.h>
+#include <mysql/mysql.h>
+#include <sys/mman.h>
+#include <pwd.h>
+
+/* Station description */
+#include "wh1080_dev.h"
+
+/* Program-dependent stuff. */
+#define WH1080_MAX_RETRIES             5
+#define WH1080_READ_TIMEOUT            1000
+#define WH1080_WRITE_TIMEOUT           1000
+
+#define STAMPSIZE                      32       /* size of time stamp to print out */
+#define DATETEXTLENGTH                 48       /* more than maximum size of date text */
+#define SECSPERHOUR                    3600     /* seconds per hour */
+#define SECSPERDAY                     86400    /* and seconds per day */
+
+/* Conversion factors to archaic units, for Wunderground and friends */
+#define	KM_TO_MILES                   0.6213711922
+#define MM_TO_IN                      0.039370078
+#define C_TO_F(C)                     (C * 1.8 + 32)
+#define hPa_TO_inHg                   0.0295299801
+/*
+ * For some reason, Wunderground doesn't adhere to this constant.  By
+ * observation, the constant must be something like this.
+ *
+ * 29.87 / 1011.4 = 0.029533320
+ * 29.88 / 1011.7 = 0.029534446
+ * 29.89 / 1012.1 = 0.029532654
+ * 29.90 / 1012.4 = 0.029533781
+ * Average          0.02953553
+ *
+ */
+#define Wunder_hPa_TO_inHg            0.02953553
+
+
+/* OK, this one's not so archaic */
+#define KELVIN(C)                     (C + 273.15)
+
+struct usb_dev_handle {
+  int fd;
+
+  struct usb_bus *bus;
+  struct usb_device *device;
+
+  int config;
+  int interface;
+  int altsetting;
+
+  /* Added by RMT so implementations can store other per-open-device data */
+  int *impl_info;
+};
+
+/*
+ * Local configuration, to be read from configuration file.
+ * If this changes, also change the table definition in db/mkdb.
+ */
+struct config
+{
+  int version;                                  /* format version, for DB */
+#define CONFIG_VERSION 1                        /* current format version */
+  float latitude;                               /* In ° */
+  float longitude;
+  float elevation;                              /* metres */
+  float pressure_error;                         /* difference between actual and real pressure, hPa */
+  int poll_interval;                            /* time, in seconds, between reading the device */
+  char *station_id;                             /* this is the one we use for the database */
+  char *address;                                /* Address to display on web pages */
+  char *wunderground_station_id;
+  char *wunderground_passwd;
+  int  wunderground_report_interval;            /* how many seconds between reports to Wunderground */
+  char *weatheforyou_station_id;
+  char *weatheforyou_passwd;
+  int  weatherforyou_report_interval;           /* how many seconds between reports to Weather for you */
+  int website_generation_interval;              /* how many seconds between generating PHP header file */
+  char *db_host;                                /* database on this host */
+  char *db_user;                                /* user ID on host */
+  char *db_passwd;                              /* and password */
+  char *db;                                     /* database name */
+  char *db_table;                               /* table */
+  char *php_header;                             /* php header file with weather data */
+  char *comparefile;                            /* file to compare local weather stations */
+};
+
+extern struct config config;
+/* Command line options, defined in db.c */
+extern int debug;                               /* -d */
+extern int update;                              /* -n turns updating off  */
+extern int recover;                             /* -r: recover missed archive data (wh1080 only) */
+extern int verbose;                             /* -v */
+extern int once;                                /* -1 */
+
+/* MySQL stuff */
+extern MYSQL *mysql;
+extern MYSQL_RES *mysql_result;
+extern MYSQL_ROW mysql_row;
+extern char mysql_querytext [1024];             /* build up queries here */
+
+
+/*
+ * Readings in sanitized form.  These are effectively the readings from the
+ * station in a format that's easier for us to use.
+ */
+
+struct readings
+{
+  int page;                                     /* page from whence the readings came */
+  time_t timestamp;                             /* time of reading */
+  int last_save_mins;                           /* last save minutes (?) */
+  float inside_temp;                            /* inside temperature */
+  int inside_humidity;                          /* humidity in percent */
+  float inside_dewpoint;                        /* dewpoint temperature inside */
+  float outside_temp;                           /* outside temperature */
+  int outside_humidity;                         /* humidity in percent */
+  float outside_dewpoint;                       /* dewpoint temperature outside */
+  float pressure;                               /* absolute pressure, hPa */
+  float pressure_sea_level;                     /* relative sea level pressure, hPa */
+  float page1_abs_pressure;                     /* absolute pressure, hPa, from page 1 */
+  float page1_rel_pressure;                     /* relative pressure, hPa, from page 1 */
+  float wind_speed;                             /* wind speed in km/h */
+  float wind_gust;                              /* wind gust speed in km/h */
+  float wind_direction;                         /* wind direction, as angle */
+#define INVALID_DIRECTION           1024        /* set if we get invalid readings */
+  char wind_direction_text [4];                 /* wind direction, in text */
+  /*
+   * We keep two rain counters.  rain is the current rainfall, incremented on
+   * every reading.  This is similar to, but not the same as, what the station
+   * does internally.  This field is only changed by the wh1080 program.
+   *
+   * The other field, 'previous_rain', is set to 'rain' by the report program
+   * after reporting the rainfall.  It is only changed by report.  This approach
+   * avoids any kind of locking.
+   */
+  float rain;                                   /* rainfall in mm */
+  float previous_rain;                          /* previous rainfall in mm */
+};
+
+extern struct readings current_readings;
+
+struct sharefile
+{
+#define SHARED_MAGIC 0x539
+  int magic;                                    /* magic number */
+  struct readings current_readings;             /* current readings */
+};
+
+extern struct sharefile *sharefile;             /* file to map */
+extern int sharefd;                             /* and descriptor */
+extern float print_previous_rain;
+
+/* MySQL stuff, in db.c */
+extern MYSQL *mysql;
+extern MYSQL_RES *mysql_result;
+extern MYSQL_ROW mysql_row;
+extern char mysql_querytext [1024];             /* build up queries here */
+extern char *wind_directions [];                /* in util.c */
+
+/* in db.c */
+void db_login ();
+int doquery (char *query);
+int domyquery (char *query, MYSQL_RES **result);
+char *mycopy (char *);
+int read_config (int argc, char *argv []);
+
+void print_readings (struct readings *readings);
+float dewpoint (float temp, int humidity);
+void set_dewpoints (struct readings *readings);
+void set_sea_level_pressure (struct readings *readings);
+void datetext (time_t, char *, char *);