0a3f2f0397
Updates BME280 sample to new async sensor API. Signed-off-by: Lauren Murphy <lauren.murphy@intel.com>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
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* Copyright (c) 2012-2014 Wind River Systems, Inc.
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* Copyright (c) 2021 Nordic Semiconductor ASA
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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 <zephyr/drivers/sensor_data_types.h>
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#include <zephyr/rtio/rtio.h>
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#include <zephyr/dsp/print_format.h>
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/*
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* Get a device structure from a devicetree node with compatible
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* "bosch,bme280". (If there are multiple, just pick one.)
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*/
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const struct device *const dev = DEVICE_DT_GET_ANY(bosch_bme280);
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SENSOR_DT_READ_IODEV(iodev, DT_COMPAT_GET_ANY_STATUS_OKAY(bosch_bme280),
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{SENSOR_CHAN_AMBIENT_TEMP, 0},
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{SENSOR_CHAN_HUMIDITY, 0},
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{SENSOR_CHAN_PRESS, 0});
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RTIO_DEFINE(ctx, 1, 1);
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static const struct device *check_bme280_device(void)
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{
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if (dev == NULL) {
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/* No such node, or the node does not have status "okay". */
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printk("\nError: no device found.\n");
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return NULL;
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}
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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 = check_bme280_device();
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if (dev == NULL) {
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return 0;
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}
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while (1) {
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uint8_t buf[128];
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int rc = sensor_read(&iodev, &ctx, buf, 128);
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if (rc != 0) {
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printk("%s: sensor_read() failed: %d\n", dev->name, rc);
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return rc;
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}
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const struct sensor_decoder_api *decoder;
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rc = sensor_get_decoder(dev, &decoder);
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if (rc != 0) {
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printk("%s: sensor_get_decode() failed: %d\n", dev->name, rc);
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return rc;
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}
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uint32_t temp_fit = 0;
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struct sensor_q31_data temp_data = {0};
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decoder->decode(buf,
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(struct sensor_chan_spec) {SENSOR_CHAN_AMBIENT_TEMP, 0},
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&temp_fit, 1, &temp_data);
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uint32_t press_fit = 0;
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struct sensor_q31_data press_data = {0};
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decoder->decode(buf,
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(struct sensor_chan_spec) {SENSOR_CHAN_PRESS, 0},
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&press_fit, 1, &press_data);
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uint32_t hum_fit = 0;
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struct sensor_q31_data hum_data = {0};
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decoder->decode(buf,
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(struct sensor_chan_spec) {SENSOR_CHAN_HUMIDITY, 0},
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&hum_fit, 1, &hum_data);
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printk("temp: %s%d.%d; press: %s%d.%d; humidity: %s%d.%d\n",
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PRIq_arg(temp_data.readings[0].temperature, 6, temp_data.shift),
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PRIq_arg(press_data.readings[0].pressure, 6, press_data.shift),
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PRIq_arg(hum_data.readings[0].humidity, 6, hum_data.shift));
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k_sleep(K_MSEC(1000));
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}
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return 0;
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}
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