GP2Y0A Class Reference

API for the GP2Y0A family of IR Proximity Sensors. More...

Detailed Description

• ID: gp2y0a
• Name: GP2Y0A IR Proximity Sensor
• Other Names: Grove 80cm IR Proximity Sensor
• Category: light
• Manufacturer: seeed
• Connection: analog

Sensors of this family return an analog voltage corresponding to the distance of an object from the sensor. The voltage is lower when objects are far away; the voltage increases as objects get closer to the sensor.

  // Note, for the Grove 80cm version of this sensor, due to the way
  // it is wired, you need to plug this into the A0 port, where it
  // will use the available A1 pin for data.

  // Instantiate a GP2Y0A on analog pin A1
  upm::GP2Y0A *volts = new upm::GP2Y0A(1);
  
  // The higher the voltage (closer to AREF) the closer the object is.  NOTE:
  // the measured voltage will probably not exceed 3.3 volts.
  // Every second, print the averaged voltage value (averaged over 20 samples).
  while (shouldRun)
    {
      cout << "AREF: " << GP2Y0A_AREF 
           << ", Voltage value (higher means closer): " 
           << volts->value(GP2Y0A_AREF, SAMPLES_PER_QUERY) << endl;
      
      sleep(1);
    }

Public Member Functions
	GP2Y0A (int pin)
	~GP2Y0A ()
float	value (float aref, uint8_t samples)

Constructor & Destructor Documentation

GP2Y0A

(

int

pin

)

GP2Y0A sensor constructor

Parameters

pin	Analog pin to use

~GP2Y0A

(

)

GP2Y0A destructor

Member Function Documentation

float value	(	float	aref,
		uint8_t	samples
	)

Gets an average voltage value from the sensor

Parameters

aref	Reference voltage in use (usually 5.0V or 3.3V)
samples	Number of samples to average over

Returns

Average voltage reading

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

• /iotdk/jenkins/workspace/upm-doc-stable/src/gp2y0a/gp2y0a.h
• /iotdk/jenkins/workspace/upm-doc-stable/src/gp2y0a/gp2y0a.cxx