blob: 5a7e6aa21c12a354a5ec0190c1b099a9c4df5053 [file] [log] [blame]
/*
* Copyright (c) 2021 Jimmy Johnson <catch22@fastmail.net>
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/sensor.h>
#include <zephyr/drivers/sensor/tmp108.h>
void temperature_one_shot(const struct device *dev,
const struct sensor_trigger *trigger)
{
struct sensor_value temp_value;
int result;
result = sensor_channel_get(dev,
SENSOR_CHAN_AMBIENT_TEMP,
&temp_value);
if (result) {
printf("error: sensor_channel_get failed: %d\n", result);
return;
}
printf("One shot power saving mode enabled, temperature is %gC\n",
sensor_value_to_double(&temp_value));
}
void temperature_alert(const struct device *dev,
const struct sensor_trigger *trigger)
{
struct sensor_value temp_flags = { 0 };
sensor_attr_get(dev,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_CONFIGURATION,
&temp_flags);
/* use a mask to pull your specific chip set bits out */
printf("Temperature alert config register = %x!\n", temp_flags.val1);
}
void enable_temp_alerts(const struct device *tmp108)
{
struct sensor_trigger sensor_trigger_type_temp_alert = {
.chan = SENSOR_CHAN_AMBIENT_TEMP,
.type = SENSOR_TRIG_THRESHOLD
};
struct sensor_value alert_upper_thresh = {
CONFIG_APP_TEMP_ALERT_HIGH_THRESH,
0
};
struct sensor_value alert_lower_thresh = {
CONFIG_APP_TEMP_ALERT_LOW_THRESH,
0
};
struct sensor_value alert_hysterisis = { 1, 0 };
struct sensor_value thermostat_mode = { 0, 0 };
sensor_attr_set(tmp108,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_ALERT,
&thermostat_mode);
sensor_attr_set(tmp108,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_HYSTERESIS,
&alert_hysterisis);
sensor_attr_set(tmp108,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_UPPER_THRESH,
&alert_upper_thresh);
sensor_attr_set(tmp108,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_LOWER_THRESH,
&alert_lower_thresh);
sensor_trigger_set(tmp108,
&sensor_trigger_type_temp_alert,
temperature_alert);
}
void enable_one_shot(const struct device *tmp108)
{
struct sensor_trigger sensor_trigger_type_temp_one_shot = {
.chan = SENSOR_CHAN_AMBIENT_TEMP,
.type = SENSOR_TRIG_DATA_READY
};
sensor_attr_set(tmp108,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_TMP108_ONE_SHOT_MODE,
NULL);
sensor_trigger_set(tmp108,
&sensor_trigger_type_temp_one_shot,
temperature_one_shot);
}
void get_temperature_continuous(const struct device *tmp108)
{
struct sensor_value temp_value;
int result;
result = sensor_channel_get(tmp108,
SENSOR_CHAN_AMBIENT_TEMP,
&temp_value);
if (result) {
printf("error: sensor_channel_get failed: %d\n", result);
return;
}
printf("temperature is %gC\n", sensor_value_to_double(&temp_value));
}
void main(void)
{
const struct device *temp_sensor;
int result;
printf("TI TMP108 Example, %s\n", CONFIG_ARCH);
temp_sensor = DEVICE_DT_GET_ANY(ti_tmp108);
if (!temp_sensor) {
printf("warning: tmp108 device not found checking for compatible ams device\n");
temp_sensor = DEVICE_DT_GET_ANY(ams_as6212);
if (!temp_sensor) {
printf("error: tmp108 compatible devices not found\n");
return;
}
}
if (!device_is_ready(temp_sensor)) {
printf("error: tmp108 device not ready\n");
return;
}
sensor_attr_set(temp_sensor,
SENSOR_CHAN_AMBIENT_TEMP,
SENSOR_ATTR_TMP108_CONTINUOUS_CONVERSION_MODE,
NULL);
#if CONFIG_APP_ENABLE_ONE_SHOT
enable_one_shot(temp_sensor);
#endif
#if CONFIG_APP_REPORT_TEMP_ALERTS
enable_temp_alerts(temp_sensor);
#endif
while (1) {
result = sensor_sample_fetch(temp_sensor);
if (result) {
printf("error: sensor_sample_fetch failed: %d\n", result);
break;
}
#if !CONFIG_APP_ENABLE_ONE_SHOT
get_temperature_continuous(temp_sensor);
#endif
k_sleep(K_MSEC(3000));
}
}