102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2021 Jimmy Johnson <catch22@fastmail.net>
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <zephyr/drivers/sensor.h>
|
|
#include <zephyr/logging/log.h>
|
|
#include <zephyr/kernel.h>
|
|
|
|
#include "tmp108.h"
|
|
|
|
#define TMP108_ONE_SHOT_RETRY_TIME_IN_MS 10
|
|
|
|
LOG_MODULE_DECLARE(TMP108, CONFIG_SENSOR_LOG_LEVEL);
|
|
|
|
void tmp108_trigger_handle_one_shot(struct k_work *work)
|
|
{
|
|
struct k_work_delayable *delayable_work = CONTAINER_OF(work,
|
|
struct k_work_delayable,
|
|
work);
|
|
|
|
struct tmp108_data *drv_data = CONTAINER_OF(delayable_work,
|
|
struct tmp108_data,
|
|
scheduled_work);
|
|
|
|
struct sensor_trigger sensor_trigger_type = {
|
|
.chan = SENSOR_CHAN_AMBIENT_TEMP,
|
|
.type = SENSOR_TRIG_DATA_READY
|
|
};
|
|
|
|
uint16_t config = 0;
|
|
bool shutdown_mode = false;
|
|
|
|
tmp108_reg_read(drv_data->tmp108_dev, TI_TMP108_REG_CONF, &config);
|
|
|
|
/* check shutdown mode which indicates a one shot read was successful */
|
|
shutdown_mode = (config & (TI_TMP108_CONF_M1 | TI_TMP108_CONF_M0)) == 0;
|
|
|
|
if (shutdown_mode == true) {
|
|
ti_tmp108_read_temp(drv_data->tmp108_dev);
|
|
} else {
|
|
LOG_ERR("Temperature one shot mode read failed, retrying");
|
|
/* Typical wake up time is 27 ms, retry if the read fails
|
|
* assuming the chip should wake up and take a reading by the time
|
|
* 27 ms for the initial wake up time and call of this thread
|
|
* plus 10 ms time has passed
|
|
*/
|
|
k_work_reschedule(&drv_data->scheduled_work,
|
|
K_MSEC(TMP108_ONE_SHOT_RETRY_TIME_IN_MS));
|
|
return;
|
|
}
|
|
|
|
/* Successful read, call set callbacks */
|
|
if (drv_data->data_ready_handler) {
|
|
drv_data->data_ready_handler(drv_data->tmp108_dev,
|
|
&sensor_trigger_type);
|
|
}
|
|
}
|
|
|
|
void tmp108_trigger_handle_alert(const struct device *gpio,
|
|
struct gpio_callback *cb,
|
|
gpio_port_pins_t pins)
|
|
{
|
|
|
|
struct tmp108_data *drv_data = CONTAINER_OF(cb,
|
|
struct tmp108_data,
|
|
temp_alert_gpio_cb);
|
|
|
|
struct sensor_trigger sensor_trigger_type = {
|
|
.chan = SENSOR_CHAN_AMBIENT_TEMP,
|
|
.type = SENSOR_TRIG_THRESHOLD
|
|
};
|
|
|
|
/* Successful read, call set callbacks */
|
|
if (drv_data->temp_alert_handler) {
|
|
drv_data->temp_alert_handler(drv_data->tmp108_dev,
|
|
&sensor_trigger_type);
|
|
}
|
|
}
|
|
|
|
int tmp_108_trigger_set(const struct device *dev,
|
|
const struct sensor_trigger *trig,
|
|
sensor_trigger_handler_t handler)
|
|
{
|
|
struct tmp108_data *drv_data = dev->data;
|
|
|
|
if (trig->type == SENSOR_TRIG_DATA_READY) {
|
|
drv_data->data_ready_handler = handler;
|
|
drv_data->data_ready_trigger = *trig;
|
|
return 0;
|
|
}
|
|
|
|
if (trig->type == SENSOR_TRIG_THRESHOLD) {
|
|
drv_data->temp_alert_handler = handler;
|
|
drv_data->temp_alert_trigger = *trig;
|
|
return 0;
|
|
}
|
|
|
|
return -ENOTSUP;
|
|
}
|