TA12200 Class Reference

API for the TA12-200 Current Transformer. More...

Detailed Description

• ID: ta12200
• Name: AC Current Sensor
• Other Names: Grove Electricity Sensor
• Category: electric
• Manufacturer: seeed
• Link: http://www.seeedstudio.com/wiki/Grove_-_Electricity_Sensor
• Connection: analog

UPM module for the TA12-200 current transformer found, for instance, in the Grove Electricity Sensor. This module can measure AC moving through a wire at up to 5 A.

    // Instantiate a TA12-200 sensor on analog pin A0
    upm::TA12200 electricity(0);

    while (shouldRun) {
        unsigned int maxVal = electricity.highestValue();
        float current = electricity.milliAmps(maxVal);

        cout << "Max ADC Value: " << maxVal << ", current: " << current << "mA" << endl;
        upm_delay_us(100000);
    }

Public Member Functions
	TA12200 (int pin)
	~TA12200 ()
uint32_t	getMillis ()
void	initClock ()
int	highestValue ()
float	milliAmps (unsigned int val, int res=TA12200_ADC_RES)

Constructor & Destructor Documentation

TA12200

(

int

pin

)

TA12200 constructor

Parameters

pin	Analog pin to use

~TA12200

(

)

TA12200 destructor

Member Function Documentation

uint32_t getMillis

(

)

Returns the number of milliseconds elapsed since initClock() was last called.

Returns

Elapsed milliseconds

void initClock

(

)

Resets the clock

int highestValue

(

)

Gets the conversion value from the sensor

Returns

Highest value obtained over 1 second of measuring or -1 if error

float milliAmps	(	unsigned int	val,
		int	res = TA12200_ADC_RES
	)

Computes the measured voltage

Parameters

val	Value measured by highestValue()
res	ADC resolution

Returns

Measured current in mA

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

• src/ta12200/ta12200.hpp
• src/ta12200/ta12200.cxx