Energy Meter [Lego]

Files
file	lego-energymeter.h
	RobotC Energy Meter Driver.
Defines
#define	LEGOEM_I2C_ADDR   0x04
#define	LEGOEM_I2C_REG   0x0A
#define	LEGOEM_I2C_SIZE   14
Functions
bool	LEGOEMreadData (tSensors link, float &voltageIn, float &currentIn, float &voltageOut, float &currentOut, int &joule, float &wattIn, float &wattOut)
Variables
tByteArray	LEGOEM_I2CRequest
tByteArray	LEGOEM_I2CReply

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Detailed Description

Energy Meter

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Define Documentation

#define LEGOEM_I2C_ADDR   0x04

Energy Meter I2C device address

Definition at line 47 of file lego-energymeter.h.

#define LEGOEM_I2C_REG   0x0A

Start of I2C registers that need to be read

Definition at line 48 of file lego-energymeter.h.

#define LEGOEM_I2C_SIZE   14

Number of registers to read at once

Definition at line 49 of file lego-energymeter.h.

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Function Documentation

bool LEGOEMreadData	(	tSensors	link,
		float &	voltageIn,
		float &	currentIn,
		float &	voltageOut,
		float &	currentOut,
		int &	joule,
		float &	wattIn,
		float &	wattOut
	)

Read a snapshot of the current register values. They must all be read at once to ensure data coherency.

Parameters:

link	the LEGO Energy Meter port number
voltageIn	voltage level on input
currentIn	current supplied on input
voltageOut	voltage on output
currentOut	current drawn on output
joule	number of Joules stored on E-Meter
wattIn	amount of Watts coming in
wattOut	amount of Watts being consumed

Returns:

true if no error occured, false if it did

Examples:

lego-energymeter-test1.c.

Definition at line 78 of file lego-energymeter.h.

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Variable Documentation

tByteArray LEGOEM_I2CReply

Array to hold I2C reply data

Definition at line 59 of file lego-energymeter.h.

tByteArray LEGOEM_I2CRequest

Array to hold I2C command data

Definition at line 58 of file lego-energymeter.h.