1/*
2* Copyright (C) 2012 Invensense, Inc.
3*
4* Licensed under the Apache License, Version 2.0 (the "License");
5* you may not use this file except in compliance with the License.
6* You may obtain a copy of the License at
7*
8*      http://www.apache.org/licenses/LICENSE-2.0
9*
10* Unless required by applicable law or agreed to in writing, software
11* distributed under the License is distributed on an "AS IS" BASIS,
12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13* See the License for the specific language governing permissions and
14* limitations under the License.
15*/
16
17#ifndef ANDROID_SENSOR_BASE_H
18#define ANDROID_SENSOR_BASE_H
19
20#include <stdint.h>
21#include <errno.h>
22#include <sys/cdefs.h>
23#include <sys/types.h>
24
25#define CALL_MEMBER_FN(pobject, ptrToMember) ((pobject)->*(ptrToMember))
26
27#define MAX_SYSFS_NAME_LEN  (100)
28#define IIO_BUFFER_LENGTH   (480)
29
30/*****************************************************************************/
31
32struct sensors_event_t;
33
34class SensorBase {
35protected:
36    const char *dev_name;
37    const char *data_name;
38    char input_name[PATH_MAX];
39    int dev_fd;
40    int data_fd;
41
42    int openInput(const char* inputName);
43
44    int open_device();
45    int close_device();
46
47public:
48            SensorBase(const char* dev_name, const char* data_name);
49
50    virtual ~SensorBase();
51
52    virtual int readEvents(sensors_event_t* data, int count) = 0;
53    virtual bool hasPendingEvents() const;
54    virtual int getFd() const;
55    virtual int setDelay(int32_t handle, int64_t ns);
56    virtual int enable(int32_t handle, int enabled);
57};
58
59/*****************************************************************************/
60
61#endif  // ANDROID_SENSOR_BASE_H
62