64fe69d3e3
Recursively search libs/* for source and include dirs Move mgos_barometer code to its own subdir, in preparation for release to GitHub.
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
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* Copyright 2018 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include "mgos.h"
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#include "mgos_i2c.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum mgos_barometer_type {
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BARO_NONE = 0,
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BARO_MPL115,
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BARO_MPL3115,
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BARO_BME280 // Also BMP280
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};
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struct mgos_barometer;
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struct mgos_barometer_stats {
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double last_read_time; // value of mg_time() upon last call to _read()
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uint32_t read; // calls to _read()
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uint32_t read_success; // successful _read()
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uint32_t read_success_cached; // calls to _read() which were cached
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// Note: read_errors := read - read_success - read_success_cached
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double read_success_usecs; // time spent in successful uncached _read()
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};
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struct mgos_barometer *mgos_barometer_create_i2c(struct mgos_i2c *i2c, uint8_t i2caddr, enum mgos_barometer_type type);
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void mgos_barometer_destroy(struct mgos_barometer **sensor);
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bool mgos_barometer_has_thermometer(struct mgos_barometer *sensor);
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bool mgos_barometer_has_barometer(struct mgos_barometer *sensor);
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/* Set cache TTL -- will limit reads and return cached data. Set msecs=0 to turn off */
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bool mgos_barometer_set_cache_ttl(struct mgos_barometer *sensor, uint16_t msecs);
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/* Read all available sensor data from the IMU */
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bool mgos_barometer_read(struct mgos_barometer *sensor);
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/* Return barometer data in units of Pascals */
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bool mgos_barometer_get_pressure(struct mgos_barometer *sensor, float *p);
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/* Return temperature data in units of Celcius */
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bool mgos_barometer_get_temperature(struct mgos_barometer *sensor, float *t);
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/*
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* Return statistics on the sensor.
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*/
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bool mgos_barometer_get_stats(struct mgos_barometer *sensor, struct mgos_barometer_stats *stats);
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/*
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* Initialization function for MGOS -- currently a noop.
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*/
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bool mgos_barometer_init(void);
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#ifdef __cplusplus
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}
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#endif
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