Sensor HAL: Accelerometer 3D

Added processing for Accelerometer 3D as defined by HID Sensor
usage table. This only implements the minimal set.

Change-Id: I0eebc550dab314cb954b8b533bae735d6179326a
Signed-off-by: srinivas pandruvada <srinivas.pandruvada@intel.com>

diff --git a/common/libsensors/HidSensor_Accel3D.cpp b/common/libsensors/HidSensor_Accel3D.cpp
new file mode 100644 (file)
index 0000000..50ba0fc
--- /dev/null
+++ b/common/libsensors/HidSensor_Accel3D.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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 <fcntl.h>
+#include <errno.h>
+#include <math.h>
+#include <poll.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <sys/select.h>
+#include <cutils/log.h>
+
+#include "common.h"
+#include "SensorConfig.h"
+#include "HidSensor_Accel3D.h"
+
+#define CHANNEL_X 0
+#define CHANNEL_Y 1
+#define CHANNEL_Z 2
+
+struct accel_3d_sample{
+    unsigned int accel_x;
+    unsigned int accel_y;
+    unsigned int accel_z;
+} __packed;
+
+const struct sensor_t AccelSensor::sSensorInfo_accel3D = {
+    "HID_SENSOR Accelerometer 3D", "Intel", 1, SENSORS_ACCELERATION_HANDLE,
+        SENSOR_TYPE_ACCELEROMETER, RANGE_A, RESOLUTION_A, 0.23f, 20000, {}
+};
+
+const long HID_USAGE_SENSOR_UNITS_G = 0x1A;
+const long HID_USAGE_SENSOR_UNITS_METERS_PER_SEC_SQRD = (0x11, 0xE0);
+const int retry_cnt = 5;
+
+AccelSensor::AccelSensor(): SensorIIODev("accel_3d", "in_accel_scale", "in_accel_offset", "in_accel_", retry_cnt){
+    ALOGV(">>AccelSensor 3D: constructor!");
+    mPendingEvent.version = sizeof(sensors_event_t);
+    mPendingEvent.sensor = ID_A;
+    mPendingEvent.type = SENSOR_TYPE_ACCELEROMETER;
+    memset(mPendingEvent.data, 0, sizeof(mPendingEvent.data));
+    ALOGV("<<AccelSensor 3D: constructor!");
+}
+
+int AccelSensor::processEvent(unsigned char *raw_data, size_t raw_data_len){
+    struct accel_3d_sample *sample;
+
+    ALOGV(">>%s", __func__);
+
+    if (IsDeviceInitialized() == false){
+        ALOGE("Device was not initialized \n");
+        return  - 1;
+    } if (raw_data_len < sizeof(struct accel_3d_sample)){
+        ALOGE("Insufficient length \n");
+        return  - 1;
+    }
+
+    ALOGV("Accel:%2x:%2x:%2x:%2x:%2x:%2x",  *raw_data, *(raw_data + 1), *
+        (raw_data + 2), *(raw_data + 3), *(raw_data + 4), *(raw_data + 5));
+    sample = (struct accel_3d_sample*)raw_data;
+    mPendingEvent.data[0] = mPendingEvent.acceleration.x =
+        CONVERT_A_G_VTF16E14_X(GetChannelBytesUsedSize(CHANNEL_X), GetExponentValue(), sample->accel_x);
+    mPendingEvent.data[1] = mPendingEvent.acceleration.y =
+        CONVERT_A_G_VTF16E14_Y(GetChannelBytesUsedSize(CHANNEL_Y), GetExponentValue(), sample->accel_y);
+    mPendingEvent.data[2] = mPendingEvent.acceleration.z =
+        CONVERT_A_G_VTF16E14_Z(GetChannelBytesUsedSize(CHANNEL_Z), GetExponentValue(), sample->accel_z);
+
+    ALOGV("ACCEL 3D Sample %fm/s2 %fm/s2 %fm/s2\n", mPendingEvent.acceleration.x,
+        mPendingEvent.acceleration.y, mPendingEvent.acceleration.z);
+    ALOGV("<<%s", __func__);
+    return 0;
+}

diff --git a/common/libsensors/HidSensor_Accel3D.h b/common/libsensors/HidSensor_Accel3D.h
new file mode 100644 (file)
index 0000000..addc0f5
--- /dev/null
+++ b/common/libsensors/HidSensor_Accel3D.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef HIDSENSOR_ACCEL3D_H
+#define HIDSENSOR_ACCEL3D_H
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#include "SensorIIODev.h"
+#include "Helpers.h"
+
+class AccelSensor: public SensorIIODev{
+
+public:
+    AccelSensor();
+    virtual int processEvent(unsigned char *raw_data, size_t raw_data_len);
+    static const struct sensor_t sSensorInfo_accel3D;
+};
+
+#endif