8d0c2f15df
To make its execution path non-blocking from the caller's perspective. Signed-off-by: Luis Ubieda <luisf@croxel.com>
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/*
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* Copyright (c) 2024 Intel Corporation
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* Copyright (c) 2024 Croxel Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/rtio/work.h>
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#include <zephyr/logging/log.h>
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#include "bme280.h"
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LOG_MODULE_DECLARE(BME280, CONFIG_SENSOR_LOG_LEVEL);
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void bme280_submit_sync(struct rtio_iodev_sqe *iodev_sqe)
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{
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uint32_t min_buf_len = sizeof(struct bme280_encoded_data);
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int rc;
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uint8_t *buf;
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uint32_t buf_len;
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const struct sensor_read_config *cfg = iodev_sqe->sqe.iodev->data;
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const struct device *dev = cfg->sensor;
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const struct sensor_chan_spec *const channels = cfg->channels;
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const size_t num_channels = cfg->count;
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rc = rtio_sqe_rx_buf(iodev_sqe, min_buf_len, min_buf_len, &buf, &buf_len);
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if (rc != 0) {
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LOG_ERR("Failed to get a read buffer of size %u bytes", min_buf_len);
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rtio_iodev_sqe_err(iodev_sqe, rc);
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return;
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}
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struct bme280_encoded_data *edata;
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edata = (struct bme280_encoded_data *)buf;
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edata->header.timestamp = k_ticks_to_ns_floor64(k_uptime_ticks());
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edata->has_temp = 0;
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edata->has_humidity = 0;
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edata->has_press = 0;
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/* Check if the requested channels are supported */
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for (size_t i = 0; i < num_channels; i++) {
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switch (channels[i].chan_type) {
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case SENSOR_CHAN_AMBIENT_TEMP:
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edata->has_temp = 1;
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break;
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case SENSOR_CHAN_HUMIDITY:
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edata->has_humidity = 1;
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break;
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case SENSOR_CHAN_PRESS:
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edata->has_press = 1;
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break;
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case SENSOR_CHAN_ALL:
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edata->has_temp = 1;
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edata->has_humidity = 1;
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edata->has_press = 1;
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break;
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default:
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continue;
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break;
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}
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}
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rc = bme280_sample_fetch_helper(dev, SENSOR_CHAN_ALL, &edata->reading);
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if (rc != 0) {
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LOG_ERR("Failed to fetch samples");
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rtio_iodev_sqe_err(iodev_sqe, rc);
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return;
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}
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rtio_iodev_sqe_ok(iodev_sqe, 0);
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}
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void bme280_submit(const struct device *dev, struct rtio_iodev_sqe *iodev_sqe)
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{
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struct rtio_work_req *req = rtio_work_req_alloc();
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__ASSERT_NO_MSG(req);
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rtio_work_req_submit(req, iodev_sqe, bme280_submit_sync);
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}
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