43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
// Copyright 2018 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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package physic
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import (
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"time"
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"periph.io/x/periph/conn"
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)
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// Env represents measurements from an environmental sensor.
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type Env struct {
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Temperature Temperature
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Pressure Pressure
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Humidity RelativeHumidity
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}
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// SenseEnv represents an environmental sensor.
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type SenseEnv interface {
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conn.Resource
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// Sense returns the value read from the sensor. Unsupported metrics are not
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// modified.
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Sense(env *Env) error
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// SenseContinuous initiates a continuous sensing at the specified interval.
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//
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// It is important to call Halt() once done with the sensing, which will turn
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// the device off and will close the channel.
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SenseContinuous(interval time.Duration) (<-chan Env, error)
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// Precision returns this sensor's precision.
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//
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// The env values are set to the number of bits that are significant for each
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// items that this sensor can measure.
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//
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// Precision is not accuracy. The sensor may have absolute and relative
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// errors in its measurement, that are likely well above the reported
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// precision. Accuracy may be improved on some sensor by using oversampling,
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// or doing oversampling in software. Refer to its datasheet if available.
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Precision(env *Env)
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}
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