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/*
* Copyright 2020 Daniel Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#ifndef MAX44009_H
#define MAX44009_H
/**
* Driver for MAX44009 Ambient Light Sensor.
* Does not support interrupts.
*/
class MAX44009 {
private:
MAX44009(const MAX44009 ©);
unsigned char const address;
unsigned char txbuf[2];
unsigned char rxbuf[2];
public:
/**
* Create a new MAX44009 object for the specified I2C address.
* This is a no-op; the sensor is not initialized. In its default
* configuration, it takes a light reading every 800ms and uses
* auto-ranging to select a suitable measurement range.
*
* @param addr I2C address of light sensor, default 0x4a
*/
MAX44009(unsigned char const addr = 0x4a) : address(addr) {}
/**
* Retrieve latest ambient light reading from the sensor.
* @return ambient light [lx]; -1 if a communication error or overrange
* condition occured.
*/
float getLux();
};
extern MAX44009 max44009;
#endif
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