MAX44009.cpp

00001 /*
00002  * MAX44009.cpp
00003  *
00004  *  Created on: 18.05.2016
00005  *      Author: Adrian
00006  */
00007 
00008 #include "MAX44009.h "
00009 
00010 MAX44009::MAX44009(I2C_RT* i2c) {
00011     // TODO Auto-generated constructor stub
00012     setI2CRT(i2c);
00013     this->config = new MAX44009Config();
00014 }
00015 
00016 MAX44009::~MAX44009() {
00017     // TODO Auto-generated destructor stub
00018 }
00019 
00020 void MAX44009::init(MAX44009_MODE desiredMode){
00021     config->build(desiredMode);
00022     setIntegrationTime();
00023     setContinousMode();
00024     configureInterrupts();
00025     setUpperThreshold();
00026     setLowerThreshold();
00027 }
00028 
00029 float MAX44009::getLux(){
00030     uint8_t registerData[2];
00031 
00032     i2c->read_RT(MAX44009_ADRESS,MAX44009_LUX_H_L_BYTE,true,registerData,2);
00033 
00034     uint8_t exponent = (registerData[0] >> 4) & 0xF;
00035     uint8_t mantissa = registerData[0] & 0xF;
00036 
00037     return calculateLux(mantissa,exponent);
00038 
00039 
00040 }
00041 
00042 float MAX44009::calculateLux(uint8_t mantissa, uint8_t exponent){
00043     return pow(2.0,exponent) * mantissa * 0.72;
00044 }
00045 
00046 void MAX44009::setIntegrationTime(){
00047     uint8_t registerValue = config->getIntegrationTime();
00048     i2c->write_RT(MAX44009_ADRESS,MAX44009_CONFIG,false,&registerValue,1);
00049 }
00050 
00051 void MAX44009::setContinousMode(){
00052     uint8_t registerValue = (config->getContinousMode()) << 7;
00053     i2c->write_RT(MAX44009_ADRESS,MAX44009_CONFIG,false,&registerValue,1);
00054 }
00055 
00056 void MAX44009::setManualConfig(){
00057     uint8_t registerValue = (config->getManualConfig()) << 6;
00058     i2c->write_RT(MAX44009_ADRESS,MAX44009_CONFIG,false,&registerValue,1);
00059 }
00060 
00061 void MAX44009::configureInterrupts(){
00062     uint8_t registerValue = config->getInterruptEnable();
00063     i2c->write_RT(MAX44009_ADRESS,MAX44009_INT_ENABLE,false,&registerValue,1);
00064 }
00065 
00066 void MAX44009::setUpperThreshold(){
00067     uint8_t registerValue = config->getUpperThreshold();
00068     i2c->write_RT(MAX44009_ADRESS,MAX44009_TH_UPPER,false,&registerValue,1);
00069 }
00070 
00071 void MAX44009::setLowerThreshold(){
00072     uint8_t registerValue = config->getLowerThreshold();
00073     i2c->write_RT(MAX44009_ADRESS,MAX44009_TH_LOWER,false,&registerValue,1);
00074 }
00075 
00076 void MAX44009::setI2CRT(I2C_RT* i2c){
00077     this->i2c = i2c;
00078 }