Diff: gps/gps.h

Revision:

0:0a841b89d614

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gps/gps.h	Mon Oct 11 10:34:55 2010 +0000
@@ -0,0 +1,109 @@
+/****************************************************************************
+ *    Copyright 2010 Andy Kirkham, Stellar Technologies Ltd
+ *    
+ *    This file is part of the Satellite Observers Workbench (SOWB).
+ *
+ *    SOWB is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, either version 3 of the License, or
+ *    (at your option) any later version.
+ *
+ *    SOWB is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with SOWB.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $
+ *    
+ ***************************************************************************/
+
+#ifndef GPS_H
+#define GPS_H
+
+#define GPS_LAT_STR 0
+#define GPS_LON_STR 1
+
+#define GPS_HISTORY_SIZE  60
+
+typedef struct _gps_time {
+    int     year;
+    char    month;
+    char    day;
+    char    hour;
+    char    minute;
+    char    second;
+    char    tenth;
+    char    hundreth;
+    char    is_valid;
+    char    prev_valid;
+} GPS_TIME;
+
+typedef struct _gps_location_raw {
+    char        north_south;
+    char        east_west;
+    char        lat[16];
+    char        lon[16];
+    char        alt[16];
+    char        sats[8];
+    char        is_valid;
+    uint32_t    updated;
+} GPS_LOCATION_RAW;
+
+typedef struct _gps_location_average {
+    char    north_south;
+    double  latitude;
+    char    east_west;
+    double  longitude;
+    double  height;
+    char    *sats;
+    char    is_valid;
+} GPS_LOCATION_AVERAGE;
+
+/* GPS module API function prototypes. */
+void                 gps_init(void);
+void                 gps_process(void);
+double               gps_convert_coord(char *s, int type);
+double               gps_julian_day_number(GPS_TIME *t);
+double               gps_julian_date(GPS_TIME *t);
+double               gps_siderealDegrees_by_jd(double jd);
+double               gps_siderealDegrees_by_time(GPS_TIME *t);
+double               gps_siderealHA_by_jd(double jd);
+double               gps_siderealHA_by_time(GPS_TIME *t);
+GPS_TIME             *gps_get_time(GPS_TIME *q);
+GPS_LOCATION_RAW     *gps_get_location_raw(GPS_LOCATION_RAW *q);
+GPS_LOCATION_AVERAGE *gps_get_location_average(GPS_LOCATION_AVERAGE *q);
+
+/* Used by other modules to make callbacks. */
+void gps_pps_fall(void);    /* gpioirq.c needs this to know what to callback to. */
+
+#define GPS_BUFFER_SIZE     128
+
+/* Used to test the IIR register. Common across UARTs. */
+#define UART_ISSET_THRE              0x0002
+#define UART_ISSET_RDA               0x0004
+#define UART_ISSET_CTI               0x000C
+#define UART_ISSET_RLS               0x0006
+#define UART_ISSET_FIFOLVL_RXFULL    0x0000000F
+#define UART_ISSET_FIFOLVL_TXFULL    0x00000F00
+
+#define UART_RX_INTERRUPT       iir & UART_ISSET_RDA
+
+
+/* UART1 register configuration values. */
+#define UART1_SET_LCR           0x00000003
+#define UART1_SET_LCR_DLAB      0x00000083
+#define UART1_SET_DLLSB         0x71
+#define UART1_SET_DLMSB         0x02
+#define UART1_SET_FCR           0x01
+#define UART1_SET_FCR_CLEAR     0x07
+#define UART1_SET_IER           0x07
+
+/* Macros. */
+#define UART1_FIFO_NOT_EMPTY    LPC_UART1->LSR & 0x1
+#define UART1_GETC              (char)LPC_UART1->RBR
+
+#endif
+