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/*
* Copyright (c) 2020 Peter Johanson
*
* SPDX-License-Identifier: MIT
*/
#define DT_DRV_COMPAT alps_en11
#include <device.h>
#include <drivers/gpio.h>
#include <sys/util.h>
#include <kernel.h>
#include <drivers/sensor.h>
#include <sys/__assert.h>
#include <logging/log.h>
#include "en11.h"
LOG_MODULE_REGISTER(EN11, CONFIG_SENSOR_LOG_LEVEL);
static int en11_sample_fetch(struct device *dev, enum sensor_channel chan)
{
struct en11_data *drv_data = dev->driver_data;
u16_t val;
__ASSERT_NO_MSG(chan == SENSOR_CHAN_ALL || chan == SENSOR_CHAN_AMBIENT_TEMP);
// if (en11_reg_read(drv_data, EN11_REG_TOBJ, &val) < 0) {
// return -EIO;
// }
// if (val & EN11_DATA_INVALID_BIT) {
// return -EIO;
// }
// drv_data->sample = arithmetic_shift_right((s16_t)val, 2);
return 0;
}
static int en11_channel_get(struct device *dev,
enum sensor_channel chan,
struct sensor_value *val)
{
struct en11_data *drv_data = dev->driver_data;
// s32_t uval;
// if (chan != SENSOR_CHAN_AMBIENT_TEMP) {
// return -ENOTSUP;
// }
// uval = (s32_t)drv_data->sample * EN11_TEMP_SCALE;
// val->val1 = uval / 1000000;
// val->val2 = uval % 1000000;
return 0;
}
static const struct sensor_driver_api en11_driver_api = {
#ifdef CONFIG_EN11_TRIGGER
.trigger_set = en11_trigger_set,
#endif
.sample_fetch = en11_sample_fetch,
.channel_get = en11_channel_get,
};
int en11_init(struct device *dev)
{
struct en11_data *drv_data = dev->driver_data;
const struct en11_config *drv_cfg = dev->config_info;
LOG_DBG("");
drv_data->a = device_get_binding(drv_cfg->a_label);
if (drv_data->a == NULL) {
LOG_ERR("Failed to get pointer to A GPIO device");
return -EINVAL;
}
drv_data->b = device_get_binding(drv_cfg->b_label);
if (drv_data->b == NULL) {
LOG_ERR("Failed to get pointer to B GPIO device");
return -EINVAL;
}
#ifdef CONFIG_EN11_TRIGGER
if (en11_init_interrupt(dev) < 0) {
LOG_DBG("Failed to initialize interrupt!");
return -EIO;
}
#endif
return 0;
}
struct en11_data en11_data;
const struct en11_config en11_cfg = {
.a_label = DT_INST_GPIO_LABEL(0, a_gpios),
.a_pin = DT_INST_GPIO_PIN(0, a_gpios),
.a_flags = DT_INST_GPIO_FLAGS(0, a_gpios),
.b_label = DT_INST_GPIO_LABEL(0, b_gpios),
.b_pin = DT_INST_GPIO_PIN(0, b_gpios),
.b_flags = DT_INST_GPIO_FLAGS(0, b_gpios),
};
DEVICE_AND_API_INIT(en11, DT_INST_LABEL(0), en11_init,
&en11_data,
&en11_cfg, POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY,
&en11_driver_api);
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