150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 2016 Intel Corporation
|
|
*
|
|
* 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 <device.h>
|
|
#include <i2c.h>
|
|
#include <misc/__assert.h>
|
|
#include <misc/util.h>
|
|
#include <nanokernel.h>
|
|
#include <sensor.h>
|
|
|
|
#include "hts221.h"
|
|
|
|
int hts221_trigger_set(struct device *dev,
|
|
const struct sensor_trigger *trig,
|
|
sensor_trigger_handler_t handler)
|
|
{
|
|
struct hts221_data *drv_data = dev->driver_data;
|
|
|
|
__ASSERT_NO_MSG(trig->type == SENSOR_TRIG_DATA_READY);
|
|
|
|
gpio_pin_disable_callback(drv_data->gpio, CONFIG_HTS221_GPIO_PIN_NUM);
|
|
|
|
drv_data->data_ready_handler = handler;
|
|
if (handler == NULL) {
|
|
return 0;
|
|
}
|
|
|
|
drv_data->data_ready_trigger = *trig;
|
|
|
|
gpio_pin_enable_callback(drv_data->gpio, CONFIG_HTS221_GPIO_PIN_NUM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void hts221_gpio_callback(struct device *dev,
|
|
struct gpio_callback *cb, uint32_t pins)
|
|
{
|
|
struct hts221_data *drv_data =
|
|
CONTAINER_OF(cb, struct hts221_data, gpio_cb);
|
|
|
|
ARG_UNUSED(pins);
|
|
|
|
gpio_pin_disable_callback(dev, CONFIG_HTS221_GPIO_PIN_NUM);
|
|
|
|
#if defined(CONFIG_HTS221_TRIGGER_OWN_FIBER)
|
|
nano_sem_give(&drv_data->gpio_sem);
|
|
#elif defined(CONFIG_HTS221_TRIGGER_GLOBAL_FIBER)
|
|
nano_work_submit(&drv_data->work);
|
|
#endif
|
|
}
|
|
|
|
static void hts221_fiber_cb(void *arg)
|
|
{
|
|
struct device *dev = arg;
|
|
struct hts221_data *drv_data = dev->driver_data;
|
|
|
|
if (drv_data->data_ready_handler != NULL) {
|
|
drv_data->data_ready_handler(dev,
|
|
&drv_data->data_ready_trigger);
|
|
}
|
|
|
|
gpio_pin_enable_callback(drv_data->gpio, CONFIG_HTS221_GPIO_PIN_NUM);
|
|
}
|
|
|
|
#ifdef CONFIG_HTS221_TRIGGER_OWN_FIBER
|
|
static void hts221_fiber(int dev_ptr, int unused)
|
|
{
|
|
struct device *dev = INT_TO_POINTER(dev_ptr);
|
|
struct hts221_data *drv_data = dev->driver_data;
|
|
|
|
ARG_UNUSED(unused);
|
|
|
|
while (1) {
|
|
nano_fiber_sem_take(&drv_data->gpio_sem, TICKS_UNLIMITED);
|
|
hts221_fiber_cb(dev);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_HTS221_TRIGGER_GLOBAL_FIBER
|
|
static void hts221_work_cb(struct nano_work *work)
|
|
{
|
|
struct hts221_data *drv_data =
|
|
CONTAINER_OF(work, struct hts221_data, work);
|
|
|
|
hts221_fiber_cb(drv_data->dev);
|
|
}
|
|
#endif
|
|
|
|
int hts221_init_interrupt(struct device *dev)
|
|
{
|
|
struct hts221_data *drv_data = dev->driver_data;
|
|
|
|
/* setup data ready gpio interrupt */
|
|
drv_data->gpio = device_get_binding(CONFIG_HTS221_GPIO_DEV_NAME);
|
|
if (drv_data->gpio == NULL) {
|
|
SYS_LOG_ERR("Cannot get pointer to %s device.",
|
|
CONFIG_HTS221_GPIO_DEV_NAME);
|
|
return -EINVAL;
|
|
}
|
|
|
|
gpio_pin_configure(drv_data->gpio, CONFIG_HTS221_GPIO_PIN_NUM,
|
|
GPIO_DIR_IN | GPIO_INT | GPIO_INT_EDGE |
|
|
GPIO_INT_ACTIVE_HIGH | GPIO_INT_DEBOUNCE);
|
|
|
|
gpio_init_callback(&drv_data->gpio_cb,
|
|
hts221_gpio_callback,
|
|
BIT(CONFIG_HTS221_GPIO_PIN_NUM));
|
|
|
|
if (gpio_add_callback(drv_data->gpio, &drv_data->gpio_cb) < 0) {
|
|
SYS_LOG_ERR("Could not set gpio callback.");
|
|
return -EIO;
|
|
}
|
|
|
|
/* enable data-ready interrupt */
|
|
if (i2c_reg_write_byte(drv_data->i2c, HTS221_I2C_ADDR,
|
|
HTS221_REG_CTRL3, HTS221_DRDY_EN) < 0) {
|
|
SYS_LOG_ERR("Could not enable data-ready interrupt.");
|
|
return -EIO;
|
|
}
|
|
|
|
#if defined(CONFIG_HTS221_TRIGGER_OWN_FIBER)
|
|
nano_sem_init(&drv_data->gpio_sem);
|
|
|
|
fiber_start(drv_data->fiber_stack, CONFIG_HTS221_FIBER_STACK_SIZE,
|
|
(nano_fiber_entry_t)hts221_fiber, POINTER_TO_INT(dev),
|
|
0, CONFIG_HTS221_FIBER_PRIORITY, 0);
|
|
#elif defined(CONFIG_HTS221_TRIGGER_GLOBAL_FIBER)
|
|
drv_data->work.handler = hts221_work_cb;
|
|
drv_data->dev = dev;
|
|
#endif
|
|
|
|
gpio_pin_enable_callback(drv_data->gpio, CONFIG_HTS221_GPIO_PIN_NUM);
|
|
|
|
return 0;
|
|
}
|