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0.5.2 MAX44009

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rob tillaart 2022-01-05 16:46:56 +01:00
parent a9d160c97a
commit a2ab58e222
5 changed files with 25 additions and 13 deletions
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6
libraries/Max44009/Max44009.h
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@ -2,7 +2,7 @@
// FILE: Max44009.h
// AUTHOR: Rob dot Tillaart at gmail dot com
// VERSION: 0.5.1
// VERSION: 0.5.2
// PURPOSE: library for MAX44009 lux sensor Arduino
// HISTORY: See Max440099.cpp
@ -32,7 +32,7 @@
#include "Arduino.h"
#define MAX44009_LIB_VERSION (F("0.5.1"))
#define MAX44009_LIB_VERSION (F("0.5.2"))
#define MAX44009_DEFAULT_ADDRESS 0x4A
#define MAX44009_ALT_ADDRESS 0x4B
@ -123,7 +123,7 @@ public:
float convertToLux(uint8_t datahigh, uint8_t datalow);
private:
protected:
bool setThreshold(uint8_t reg, float value);
float getThreshold(uint8_t reg);

2
libraries/Max44009/library.json
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@ -15,7 +15,7 @@
"type": "git",
"url": "https://github.com/RobTillaart/Max44009.git"
},
"version": "0.5.1",
"version": "0.5.2",
"license": "MIT",
"frameworks": "arduino",
"platforms": "*",

2
libraries/Max44009/library.properties
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@ -1,5 +1,5 @@
name=Max44009
version=0.5.1
version=0.5.2
author=Rob Tillaart <rob.tillaart@gmail.com>
maintainer=Rob Tillaart <rob.tillaart@gmail.com>
sentence=Library for MAX44009 I2C LUX sensor Arduino.

19
libraries/Max44009/max44009.cpp
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@ -1,18 +1,19 @@
//
// FILE: Max44009.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.5.1
// VERSION: 0.5.2
// PURPOSE: library for MAX44009 lux sensor Arduino
// URL: https://github.com/RobTillaart/MAX44009
//
// HISTORY
//
// 0.5.2 2022-01-05 minor edits after creating Max44007 library
// 0.5.1 2021-12-21 update library.json, license, minor edits
// 0.5.0 2021-06-04 fix exponent math.
// 0.4.4 2021-05-27 arduino-lint
// 0.4.3 2020-12-30 arduino-ci, unit test
// 0.4.4 2021-05-27 Arduino-lint
// 0.4.3 2020-12-30 Arduino-CI, unit test
// 0.4.2 2020-06-19 fix library.json
// 0.4.1 2020-03-21 #pragma, readme.nd, license.md
// 0.4.1 2020-03-21 #pragma, readme.md, license.md
// 0.4.0 2020-01-30 remove automatic mode from constructors;
// added example code
// 0.3.3 2020-01-27 issue #140 refactor constructors / configure
@ -40,6 +41,10 @@
#include "Max44009.h"
// MAX44007 KEY VALUES
#define MAX44009_MIN_LUX (0.045)
#define MAX44009_MAX_LUX (188006.0)
#if defined(ESP8266) || defined(ESP32)
Max44009::Max44009(const uint8_t address, const uint8_t dataPin, const uint8_t clockPin)
@ -216,7 +221,7 @@ float Max44009::convertToLux(uint8_t datahigh, uint8_t datalow)
{
uint8_t exponent = datahigh >> 4;
uint32_t mantissa = ((datahigh & 0x0F) << 4) + (datalow & 0x0F);
float lux = ((0x0001 << exponent) * 0.045) * mantissa;
float lux = ((0x0001 << exponent) * MAX44009_MIN_LUX) * mantissa;
return lux;
}
@ -228,9 +233,9 @@ float Max44009::convertToLux(uint8_t datahigh, uint8_t datalow)
bool Max44009::setThreshold(const uint8_t reg, const float value)
{
// CHECK RANGE OF VALUE
if ((value < 0.0) || (value > 188006)) return false;
if ((value < 0.0) || (value > MAX44009_MAX_LUX)) return false;
uint32_t mantissa = round(value * 22.2222222); // was round(value / 0.045); multiply is faster.
uint32_t mantissa = round(value * (1.0 / MAX44009_MIN_LUX)); // compile time optimized.
uint8_t exponent = 0;
while (mantissa > 255)
{

9
libraries/Max44009/readme.md
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@ -18,6 +18,8 @@ a.k.a. GY-49
The MAX44009 ambient light sensor is an I2C sensor, that has a 22 bit
dynamic range from 0.045 lux to 188,000 lux.
relates to https://github.com/RobTillaart/Max44007
## Schema breakout max44009 / GY-49
@ -176,5 +178,10 @@ right address and sometimes not. (been there ;)
## Future
- improve documentation
-
- merge MAX44007 library in the future. (shared base class?)
#### MAX44007
The MAX44007 is an almost identical sensor that uses a step size of 0.025.
That implies the library is not useable 1 to 1 for the MAX4007, however some