ca7c6be61e
Polls and reports pressure, temperature and altitude data Signed-off-by: Remi Buisson <remi.buisson@tdk.com>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/*
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* Copyright (c) 2024 TDK Invensense
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/device.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/sensor.h>
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#include <stdio.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(PRESSURE_POLLING, CONFIG_SENSOR_LOG_LEVEL);
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/*
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* Get a device structure from a devicetree node from alias
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* "pressure_sensor".
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*/
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static const struct device *get_pressure_sensor_device(void)
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{
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const struct device *const dev = DEVICE_DT_GET(DT_ALIAS(pressure_sensor));
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if (!device_is_ready(dev)) {
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printk("\nError: Device \"%s\" is not ready; "
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"check the driver initialization logs for errors.\n",
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dev->name);
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return NULL;
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}
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printk("Found device \"%s\", getting sensor data\n", dev->name);
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return dev;
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}
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int main(void)
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{
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const struct device *dev = get_pressure_sensor_device();
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if (dev == NULL) {
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return 0;
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}
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struct sensor_value pressure;
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struct sensor_value temperature;
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struct sensor_value altitude;
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LOG_INF("Starting pressure and altitude polling sample.\n");
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while (1) {
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if (sensor_sample_fetch_chan(dev, SENSOR_CHAN_ALL) == 0) {
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sensor_channel_get(dev, SENSOR_CHAN_PRESS, &pressure);
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sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &temperature);
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sensor_channel_get(dev, SENSOR_CHAN_ALTITUDE, &altitude);
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LOG_INF("temp %.2f Cel, pressure %f kPa, altitude %f m",
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sensor_value_to_double(&temperature),
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sensor_value_to_double(&pressure),
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sensor_value_to_double(&altitude));
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}
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}
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return 0;
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}
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