TCS37727 Class Reference

API for the TCS37727 Color Light-To-Digital Converter. More...

Detailed Description

• ID: tcs37727
• Name: TCS37727 Color Light-To-Digital Converter
• Category: color
• Manufacturer: ams
• Link: http://ams.com/eng/Products/Light-Sensors
• Connection: i2c

Description in web-link above: The TCS3772 device family provides red, green, blue, and clear (RGBC) light sensing and, when coupled with an external IR LED, proximity detection. These devices detect light intensity under a variety of lighting conditions and through a variety of attenuation materials, including dark glass. The proximity detection feature allows a large dynamic range of operation for accurate short distance detection, such as in a cell phone, for detecting when the user positions the phone close to their ear. An internal state machine provides the ability to put the device into a low power state in between proximity and RGBC measurements providing very low average power consumption.

  upm::tcs37727_data_t data;

  std::cout << "Initializing test-application..." << std::endl;

  // Instantiate an TCS37727 instance on bus 1
  upm::TCS37727 *mySensor = new upm::TCS37727(1);

  // activate periodic measurements
  mySensor->setActive();

  // update and print available values every second
  while (run)
    {
      mySensor->getData (&data, true);
        std::cout << "Red: " << (int)data.red << std::endl
                  << "Green: " << (int)data.green << std::endl
                  << "Blue: " << (int)data.blue << std::endl
                  << "Clear: " << (int)data.clear << std::endl
                  << "Lux: " << (int)data.lux << std::endl
                  << "Color temperature: " << (int)data.ct << std::endl;

        std::cout << std::endl;

        sleep(1);
    }

  std::cout << "Exiting test-application..." << std::endl;

  delete mySensor;

Public Member Functions
	TCS37727 (int bus, int atime_us=TCS37727_ATIME_DEFAULT, int devAddr=TCS37727_I2C_ADDRESS)
int	checkID (void)
int	setActive (void)
int	setStandby (void)
uint8_t	trimGain (int rawc)
int	sampleData (void)
uint32_t	getChannelRed (int bSampleData=0)
uint32_t	getChannelGreen (int bSampleData=0)
uint32_t	getChannelBlue (int bSampleData=0)
uint32_t	getChannelClear (int bSampleData=0)
uint32_t	getLux (int bSampleData=0)
uint32_t	getColorTemperature (int bSampleData=0)
int	getData (tcs37727_data_t *data, int bSampleData=0)

Constructor & Destructor Documentation

TCS37727	(	int	bus,
		int	atime_us = TCS37727_ATIME_DEFAULT,
		int	devAddr = TCS37727_I2C_ADDRESS
	)

Instantiates an TCS37727 object Settings: Gain 4x, Proximity Detection off

Parameters

bus	Number of the used bus
atime_us	RGBC integration time
devAddr	Address of the used I2C device

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Member Function Documentation

int checkID

(

void

)

Check device_id of sensor

Returns

0 on success -1 on error

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int setActive

(

void

)

Set active mode, this enables periodic RGBC measurements

Returns

0 on success -1 on error

int setStandby

(

void

)

Set standby mode, this disables periodic RGBC measurements Also turns off the sensor when proximity measurement is disabled

Returns

0 on success -1 on error

int sampleData

(

void

)

Read out data of regs and call further function Also saves converted values to variables

Returns

0 on success -1 on error

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uint32_t getChannelRed

(

int

bSampleData = 0

)

Get the calculated channel red color

Parameters

bSampleData

Flag to read sensor

Returns

The channel red color on success 999 on error

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uint32_t getChannelGreen

(

int

bSampleData = 0

)

Get the calculated channel green color

Parameters

bSampleData

Flag to read sensor

Returns

The channel green color on success 999 on error

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uint32_t getChannelBlue

(

int

bSampleData = 0

)

Get the calculated channel blue color

Parameters

bSampleData

Flag to read sensor

Returns

The channel blue color on success 999 on error

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uint32_t getChannelClear

(

int

bSampleData = 0

)

Get the calculated channel clear color

Parameters

bSampleData

Flag to read sensor

Returns

The channel clear color on success 999 on error

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uint32_t getLux

(

int

bSampleData = 0

)

Get the calculated lux value

Parameters

bSampleData

Flag to read sensor

Returns

The lux value on success 999 on error

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uint32_t getColorTemperature

(

int

bSampleData = 0

)

Get the calculated color temperature

Parameters

bSampleData

Flag to read sensor

Returns

The color temperature on success 999 on error

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int getData	(	tcs37727_data_t *	data,
		int	bSampleData = 0
	)

Get calculated sensor values

Parameters

data	Calculated sensor values
bSampleData	Flag to read sensor

Returns

0 on success -1 on error

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The documentation for this class was generated from the following files:

• src/tcs37727/tcs37727.hpp
• src/tcs37727/tcs37727.cpp