Merge remote-tracking branch 'origin/micropeak-logging'

[fw/altos] / src / micropeak / ao_micropeak.h

diff --git a/src/micropeak/ao_micropeak.h b/src/micropeak/ao_micropeak.h
new file mode 100644 (file)
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+++ b/src/micropeak/ao_micropeak.h
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+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program 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; version 2 of the License.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_MICROPEAK_H_
+#define _AO_MICROPEAK_H_
+
+#define FILTER_SHIFT           3
+#define SAMPLE_SLEEP           AO_MS_TO_TICKS(96)
+
+/* 16 sample, or about two seconds worth */
+#define GROUND_AVG_SHIFT       4
+#define GROUND_AVG             (1 << GROUND_AVG_SHIFT)
+
+/* Pressure change (in Pa) to detect boost */
+#define BOOST_DETECT           120     /* 10m at sea level, 12m at 2000m */
+
+/* Wait after power on before doing anything to give the user time to assemble the rocket */
+#define BOOST_DELAY            AO_SEC_TO_TICKS(30)
+
+/* Pressure change (in Pa) to detect landing */
+#define LAND_DETECT            12      /* 1m at sea level, 1.2m at 2000m */
+
+/* Current sensor pressure value */
+extern uint32_t        pa;
+
+/* IIR filtered pressure value */
+extern uint32_t        pa_avg;
+
+/* Average pressure value on ground */
+extern uint32_t        pa_ground;
+
+/* Minimum recorded filtered pressure value */
+extern uint32_t        pa_min;
+
+/* Pressure values converted to altitudes */
+extern alt_t   ground_alt, max_alt;
+
+/* max_alt - ground_alt */
+extern alt_t   ao_max_height;
+
+#endif
+