manta: senors: add HAL for light and pressure sensors
This HAL supports sensors using Industrial I/O subsystem.
These sensor devices will be located in /sys/bus/iio/devices.
Light Sensor:
IIO device name: lightsensor-level
chan_type: IIO_LIGHT
channel: in_illuminance0_input
event: /dev/iio:device? (assigned dynamically)
Pressure Sensor:
IIO device name: barometer
chan_type: IIO_PRESSURE (This is not yet defined in main stream.)
channel: in_pressure0_input
event: /dev/iio:device? (assigned dynamically)
TODO: iio/events.h and iio/types.h should be moved to
external/kernel-headers/original.
Change-Id: Ifbeb2f8e7ef7ac09f5b0727a2376c652e5f9e800
Signed-off-by: Won Hyoung Lee <whlee@sta.samsung.com>
diff --git a/libsensors/PressureSensor.cpp b/libsensors/PressureSensor.cpp
new file mode 100644
index 0000000..c60e9f7
--- /dev/null
+++ b/libsensors/PressureSensor.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2012 Samsung
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cutils/log.h>
+#include <pthread.h>
+
+#include "PressureSensor.h"
+
+/*
+ * The BMP driver gives pascal values.
+ * It needs to be changed into hectoPascal.
+ */
+#define PRESSURE_HECTO_PA (1.0f/100.0f)
+
+PressureSensor::PressureSensor()
+ : IioSensorBase(NULL, "barometer",
+ "events/in_pressure0_thresh_either_en",
+ "in_pressure0_input", IIO_PRESSURE)
+{
+ mPendingEvent.sensor = ID_PR;
+ mPendingEvent.type = SENSOR_TYPE_PRESSURE;
+}
+
+void PressureSensor::handleData(int value) {
+ ALOGD("PressureSensor::handleData value %d", value);
+ mPendingEvent.pressure = value * PRESSURE_HECTO_PA;
+}