VDiv Class Reference

API for the Voltage Divider Sensor. More...

Detailed Description

• ID: vdiv
• Name: Voltage Divider
• Other Names: Grove Voltage Divider
• Category: electric
• Manufacturer: seeed
• Connection: analog
• Kit: robok

UPM module for the Voltage Divider sensor

  // Instantiate a Grove Voltage Divider sensor on analog pin A0
  upm::VDiv* vDiv = new upm::VDiv(0);

  // collect data and output measured voltage according to the setting
  // of the scaling switch (3 or 10)
  while (shouldRun)
    {
      unsigned int val = vDiv->value(100);
      float gain3val = vDiv->computedValue(3, val);
      float gain10val = vDiv->computedValue(10, val);
      cout << "ADC value: " << val << " Gain 3: " << gain3val 
           << "v Gain 10: " << gain10val << "v" << endl;

      sleep(1);
    }

Public Member Functions
	VDiv (int pin)
	~VDiv ()
unsigned int	value (unsigned int samples)
float	computedValue (uint8_t gain, unsigned int val, int vref=VDIV_VREF, int res=VDIV_ADC_RES)

Constructor & Destructor Documentation

VDiv

(

int

pin

)

Voltage Divider sensor constructor

Parameters

pin	Analog pin to use

~VDiv

(

)

Voltage Divider destructor

Member Function Documentation

unsigned int value

(

unsigned int

samples

)

Gets the conversion value from the sensor

Parameters

samples

Specifies how many samples to average over

Returns

Average ADC conversion value

float computedValue	(	uint8_t	gain,
		unsigned int	val,
		int	vref = VDIV_VREF,
		int	res = VDIV_ADC_RES
	)

Computes the measured voltage

Parameters

gain	Gain switch, example: either 3 or 10 grove vdiv
val	Measured voltage (from value())
vref	Reference voltage in millivolts
res	ADC resolution

Returns

Measured voltage

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

• /iotdk/jenkins/workspace/upm-doc-stable/src/vdiv/vdiv.hpp
• /iotdk/jenkins/workspace/upm-doc-stable/src/vdiv/vdiv.cxx