1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* Copyright (C) 2013-2015 STMicroelectronics
* Author: Denis Ciocca - <denis.ciocca@st.com>
*
* 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 ST_HWSENSOR_BASE_H
#define ST_HWSENSOR_BASE_H
#include <poll.h>
#include <math.h>
#include "SensorBase.h"
extern "C" {
#include "iio_utils.h"
#include "events.h"
#include "sensor_cal.h"
};
#define HW_SENSOR_BASE_DEFAULT_IIO_BUFFER_LEN (2)
#define HW_SENSOR_BASE_IIO_SYSFS_PATH_MAX (50)
#define HW_SENSOR_BASE_IIO_DEVICE_NAME_MAX (30)
#define HW_SENSOR_BASE_MAX_CHANNELS (8)
#define FILENAME_BUFFER_ENABLE "buffer/enable"
#define FILENAME_BUFFER_LENGTH "buffer/length"
#define FILENAME_BUFFER_STORE_LENGTH "buffer/store_length"
#define FILENAME_SAMPLING_FREQ "sampling_frequency"
#define FILENAME_MAX_RATE_DELIVERY "max_delivery_rate"
#define FILENAME_HRTIMER_TRIGGER_FREQ "frequency"
#define FILENAME_FLUSH "flush"
struct HWSensorBaseCommonData {
char iio_sysfs_path[HW_SENSOR_BASE_IIO_SYSFS_PATH_MAX];
char device_name[HW_SENSOR_BASE_IIO_DEVICE_NAME_MAX];
unsigned int iio_dev_num;
int num_channels;
struct iio_channel_info channels[HW_SENSOR_BASE_MAX_CHANNELS];
struct iio_scale_available sa;
} typedef HWSensorBaseCommonData;
class HWSensorBase;
class HWSensorBaseWithPollrate;
/*
* class HWSensorBase
*/
class HWSensorBase : public SensorBase {
protected:
struct pollfd pollfd_iio[2];
ssize_t scan_size;
uint8_t *sensor_data;
unsigned int current_fifo_len;
HWSensorBaseCommonData common_data;
int WriteBufferLenght(unsigned int buf_len, unsigned int store_len);
public:
HWSensorBase(HWSensorBaseCommonData *data, const char *name,
int handle, int sensor_type, unsigned int hw_fifo_len,
int pipe_data_fd, float power_consumption);
virtual ~HWSensorBase();
virtual int Enable(int handle, bool enable);
virtual int FlushData(bool need_report_event);
virtual void ThreadTask();
};
/*
* class HWSensorBaseWithPollrate
*/
class HWSensorBaseWithPollrate : public HWSensorBase {
private:
struct iio_sampling_frequency_available sampling_frequency_available;
public:
HWSensorBaseWithPollrate(HWSensorBaseCommonData *data, const char *name,
struct iio_sampling_frequency_available *sfa, int handle,
int sensor_type, unsigned int hw_fifo_len, int pipe_data_fd,
float power_consumption);
virtual ~HWSensorBaseWithPollrate();
virtual int SetDelay(int handle, int64_t period_ns, int64_t timeout);
virtual void WriteDataToPipe();
};
#endif /* ST_HWSENSOR_BASE_H */
|
