-
Notifications
You must be signed in to change notification settings - Fork 6.5k
/
adxl372_trigger.c
166 lines (137 loc) · 4.29 KB
/
adxl372_trigger.c
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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/*
* Copyright (c) 2018 Analog Devices Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT adi_adxl372
#include <device.h>
#include <drivers/gpio.h>
#include <sys/util.h>
#include <kernel.h>
#include <drivers/sensor.h>
#include "adxl372.h"
#include <logging/log.h>
LOG_MODULE_DECLARE(ADXL372, CONFIG_SENSOR_LOG_LEVEL);
static void adxl372_thread_cb(const struct device *dev)
{
const struct adxl372_dev_config *cfg = dev->config;
struct adxl372_data *drv_data = dev->data;
uint8_t status1, status2;
/* Clear the status */
if (adxl372_get_status(dev, &status1, &status2, NULL) < 0) {
return;
}
if (drv_data->th_handler != NULL) {
/* In max peak mode we wait until we settle below the inactivity
* threshold and then call the trigger handler.
*/
if (cfg->max_peak_detect_mode &&
ADXL372_STATUS_2_INACT(status2)) {
drv_data->th_handler(dev, &drv_data->th_trigger);
} else if (!cfg->max_peak_detect_mode &&
(ADXL372_STATUS_2_INACT(status2) ||
ADXL372_STATUS_2_ACTIVITY(status2))) {
drv_data->th_handler(dev, &drv_data->th_trigger);
}
}
if ((drv_data->drdy_handler != NULL) &&
ADXL372_STATUS_1_DATA_RDY(status1)) {
drv_data->drdy_handler(dev, &drv_data->drdy_trigger);
}
gpio_pin_interrupt_configure_dt(&cfg->interrupt, GPIO_INT_EDGE_TO_ACTIVE);
}
static void adxl372_gpio_callback(const struct device *dev,
struct gpio_callback *cb, uint32_t pins)
{
struct adxl372_data *drv_data =
CONTAINER_OF(cb, struct adxl372_data, gpio_cb);
const struct adxl372_dev_config *cfg = drv_data->dev->config;
gpio_pin_interrupt_configure_dt(&cfg->interrupt, GPIO_INT_DISABLE);
#if defined(CONFIG_ADXL372_TRIGGER_OWN_THREAD)
k_sem_give(&drv_data->gpio_sem);
#elif defined(CONFIG_ADXL372_TRIGGER_GLOBAL_THREAD)
k_work_submit(&drv_data->work);
#endif
}
#if defined(CONFIG_ADXL372_TRIGGER_OWN_THREAD)
static void adxl372_thread(struct adxl372_data *drv_data)
{
while (true) {
k_sem_take(&drv_data->gpio_sem, K_FOREVER);
adxl372_thread_cb(drv_data->dev);
}
}
#elif defined(CONFIG_ADXL372_TRIGGER_GLOBAL_THREAD)
static void adxl372_work_cb(struct k_work *work)
{
struct adxl372_data *drv_data =
CONTAINER_OF(work, struct adxl372_data, work);
adxl372_thread_cb(drv_data->dev);
}
#endif
int adxl372_trigger_set(const struct device *dev,
const struct sensor_trigger *trig,
sensor_trigger_handler_t handler)
{
const struct adxl372_dev_config *cfg = dev->config;
struct adxl372_data *drv_data = dev->data;
uint8_t int_mask, int_en, status1, status2;
int ret;
gpio_pin_interrupt_configure_dt(&cfg->interrupt, GPIO_INT_DISABLE);
switch (trig->type) {
case SENSOR_TRIG_THRESHOLD:
drv_data->th_handler = handler;
drv_data->th_trigger = *trig;
int_mask = ADXL372_INT1_MAP_ACT_MSK |
ADXL372_INT1_MAP_INACT_MSK;
break;
case SENSOR_TRIG_DATA_READY:
drv_data->drdy_handler = handler;
drv_data->drdy_trigger = *trig;
int_mask = ADXL372_INT1_MAP_DATA_RDY_MSK;
break;
default:
LOG_ERR("Unsupported sensor trigger");
ret = -ENOTSUP;
goto out;
}
if (handler) {
int_en = int_mask;
} else {
int_en = 0U;
}
ret = adxl372_reg_write_mask(dev, ADXL372_INT1_MAP, int_mask, int_en);
adxl372_get_status(dev, &status1, &status2, NULL); /* Clear status */
out:
gpio_pin_interrupt_configure_dt(&cfg->interrupt, GPIO_INT_EDGE_TO_ACTIVE);
return ret;
}
int adxl372_init_interrupt(const struct device *dev)
{
const struct adxl372_dev_config *cfg = dev->config;
struct adxl372_data *drv_data = dev->data;
if (!device_is_ready(cfg->interrupt.port)) {
LOG_ERR("GPIO port %s not ready", cfg->interrupt.port->name);
return -EINVAL;
}
gpio_pin_configure_dt(&cfg->interrupt, GPIO_INPUT);
gpio_init_callback(&drv_data->gpio_cb,
adxl372_gpio_callback,
BIT(cfg->interrupt.pin));
if (gpio_add_callback(cfg->interrupt.port, &drv_data->gpio_cb) < 0) {
LOG_ERR("Failed to set gpio callback!");
return -EIO;
}
drv_data->dev = dev;
#if defined(CONFIG_ADXL372_TRIGGER_OWN_THREAD)
k_sem_init(&drv_data->gpio_sem, 0, K_SEM_MAX_LIMIT);
k_thread_create(&drv_data->thread, drv_data->thread_stack,
CONFIG_ADXL372_THREAD_STACK_SIZE,
(k_thread_entry_t)adxl372_thread, drv_data,
NULL, NULL, K_PRIO_COOP(CONFIG_ADXL372_THREAD_PRIORITY),
0, K_NO_WAIT);
#elif defined(CONFIG_ADXL372_TRIGGER_GLOBAL_THREAD)
drv_data->work.handler = adxl372_work_cb;
#endif
return 0;
}