initial code import

1 files changed, 23 insertions, 0 deletions

diff --git a/sensors/barometer.vala b/sensors/barometer.vala
new file mode 100644
index 0000000..5c1f4f9
--- /dev/null
+++ b/sensors/barometer.vala
@@ -0,0 +1,23 @@
+/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+public interface Barometer : Device {
+	public abstract int32 get_pressure() throws Error;
+
+	public double get_altitude(int32 base_pressure) throws Error {
+		int32 p = get_pressure();
+		return (44330.0 * (1.0 - Posix.pow(p / base_pressure, 1.0 / 5.255)));
+	}
+}