4ad83e72e6
Added a percentage sign to match what's written in the README and sample.yaml Signed-off-by: Yishai Jaffe <yishai1999@gmail.com>
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
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* Copyright (c) 2023 Ian Morris
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <zephyr/device.h>
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#include <zephyr/sys/util_macro.h>
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#include <zephyr/kernel.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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#define DHT_ALIAS(i) DT_ALIAS(_CONCAT(dht, i))
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#define DHT_DEVICE(i, _) \
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IF_ENABLED(DT_NODE_EXISTS(DHT_ALIAS(i)), (DEVICE_DT_GET(DHT_ALIAS(i)),))
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/* Support up to 10 temperature/humidity sensors */
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static const struct device *const sensors[] = {LISTIFY(10, DHT_DEVICE, ())};
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#define DHT_IODEV(i, _) \
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IF_ENABLED(DT_NODE_EXISTS(DHT_ALIAS(i)), \
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(SENSOR_DT_READ_IODEV(_CONCAT(dht_iodev, i), DHT_ALIAS(i), \
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{SENSOR_CHAN_AMBIENT_TEMP, 0}, \
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{SENSOR_CHAN_HUMIDITY, 0})))
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LISTIFY(10, DHT_IODEV, (;));
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#define DHT_IODEV_REF(i, _) \
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COND_CODE_1(DT_NODE_EXISTS(DHT_ALIAS(i)), (CONCAT(&dht_iodev, i)), (NULL))
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static struct rtio_iodev *dht_iodev[] = { LISTIFY(10, DHT_IODEV_REF, (,)) };
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RTIO_DEFINE(dht_ctx, 1, 1);
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int main(void)
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{
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int rc;
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for (size_t i = 0; i < ARRAY_SIZE(sensors); i++) {
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if (!device_is_ready(sensors[i])) {
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printk("sensor: device %s not ready.\n", sensors[i]->name);
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return 0;
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}
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}
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while (1) {
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for (size_t i = 0; i < ARRAY_SIZE(sensors); i++) {
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struct device *dev = (struct device *) sensors[i];
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uint8_t buf[128];
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rc = sensor_read(dht_iodev[i], &dht_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 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("%16s: temp is %s%d.%d °C humidity is %s%d.%d %%RH\n", dev->name,
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PRIq_arg(temp_data.readings[0].temperature, 2, temp_data.shift),
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PRIq_arg(hum_data.readings[0].humidity, 2, hum_data.shift));
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}
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k_msleep(1000);
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}
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return 0;
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}
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