#include <ao_telemetry.h>
+#define AO_GPS_NUM_SAT_MASK (0xf << 0)
+#define AO_GPS_NUM_SAT_SHIFT (0)
+
+#define AO_GPS_VALID (1 << 4)
+#define AO_GPS_RUNNING (1 << 5)
+#define AO_GPS_DATE_VALID (1 << 6)
+#define AO_GPS_COURSE_VALID (1 << 7)
+
+struct ao_telemetry_location ao_gps_data;
+struct ao_telemetry_satellite ao_gps_tracking_data;
+
#define AO_APRS_TEST
+typedef int16_t (*ao_radio_fill_func)(uint8_t *buffer, int16_t len);
+
+#define DEBUG 0
+#if DEBUG
+void
+ao_aprs_bit(uint8_t bit)
+{
+ static int seq = 0;
+ printf ("%6d %d\n", seq++, bit ? 1 : 0);
+}
+#else
+void
+ao_aprs_bit(uint8_t bit)
+{
+ putchar (bit ? 0xc0 : 0x40);
+}
+#endif
+
+void
+ao_radio_send_aprs(ao_radio_fill_func fill);
+
#include <ao_aprs.c>
/*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ *
*/
static void
audio_gap(int secs)
{
+#if !DEBUG
int samples = secs * 9600;
while (samples--)
- putchar(0x7f);
+ ao_aprs_bit(0);
+#endif
+}
+
+#include <math.h>
+
+int
+ao_aprs_encode_altitude_expensive(int meters)
+{
+ double feet = meters / 0.3048;
+
+ double encode = log(feet) / log(1.002);
+ return floor(encode + 0.5);
}
// This is where we go after reset.
int main(int argc, char **argv)
{
- tncInit();
+ int e, x;
+ int a;
+
+ for (a = 1; a < 100000; a++) {
+ e = ao_aprs_encode_altitude(a);
+ x = ao_aprs_encode_altitude_expensive(a);
+
+ if (e != x) {
+ double back_feet, back_meters;
+ back_feet = pow(1.002, e);
+ back_meters = back_feet * 0.3048;
+ fprintf (stderr, "APRS altitude encoding failure: altitude %d actual %d expected %d actual meters %f\n",
+ a, e, x, back_meters);
+ }
+ }
audio_gap(1);
+ ao_gps_data.latitude = (45.0 + 28.25 / 60.0) * 10000000;
+ ao_gps_data.longitude = (-(122 + 44.2649 / 60.0)) * 10000000;
+ ao_gps_data.altitude = 84;
+ ao_gps_data.flags = (AO_GPS_VALID|AO_GPS_RUNNING);
+
/* Transmit one packet */
- tncTxPacket();
+ ao_aprs_send();
+
+ tncBuffer[strlen((char *) tncBuffer) - 2] = '\0';
+ fprintf(stderr, "packet: %s\n", tncBuffer);
exit(0);
}
-
-
-
+void
+ao_radio_send_aprs(ao_radio_fill_func fill)
+{
+ int16_t len;
+ uint8_t done = 0;
+ uint8_t buf[16], *b, c;
+ uint8_t bit;
+
+ while (!done) {
+ len = (*fill)(buf, sizeof (buf));
+ if (len < 0) {
+ done = 1;
+ len = -len;
+ }
+ b = buf;
+ while (len--) {
+ c = *b++;
+ for (bit = 0; bit < 8; bit++) {
+ ao_aprs_bit(c & 0x80);
+ c <<= 1;
+ }
+ }
+ }
+}