meter_task.c File Reference

Meter initialisation. More...

#include "meter.h"

Go to the source code of this file.

Functions
void	tamper_check (void)
	ISR (PORTB_INT0_vect)
	This function is executed whenever the LCD key is pressed.
	ISR (PORTC_INT0_vect)
	This function is executed on key press.
	ISR (PORTD_INT0_vect)
	This function is executed whenever the power off is detected It will switch on the battery and CPU goes to power save mode.

Variables
uint8_t	rtc_flag = 0
uint8_t	key_flag = 0
uint8_t	magnetic_tamper_flag = 0
uint8_t	cover_open_flag = 0

Detailed Description

Meter initialisation.

Application note:

AVR1631: Energy Meter Reference Design with ATxmega32A4

Documentation

For comprehensive code documentation, supported compilers, compiler settings and supported devices see readme.html

Author

Atmel Corporation: http://www.atmel.com
Support email: avr@a.nosp@m.tmel.nosp@m..com

$Revision: 1.0
$Date: 2012-07-01 10:10:10 +0530

Copyright (c) 2008, Atmel Corporation All rights reserved.

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1. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

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Definition in file meter_task.c.

Function Documentation

ISR

(

PORTB_INT0_vect

)

This function is executed whenever the LCD key is pressed.

Parameters

key_flag

is incremented on each press and is cleared on reaching the top value

Definition at line 114 of file meter_task.c.

ISR

(

PORTC_INT0_vect

)

This function is executed on key press.

Parameters

key_flag

is incremented on each press and is cleared on reaching the top value

check for cover open pin status

check for magnetic tampering

check if PIN5_bm is pressed

Definition at line 134 of file meter_task.c.

ISR

(

PORTD_INT0_vect

)

This function is executed whenever the power off is detected It will switch on the battery and CPU goes to power save mode.

Parameters

key_flag

is incremented on each press and is cleared on reaching the top value

Definition at line 171 of file meter_task.c.

void tamper_check

(

void

)

This function checks for different types of tampering such as earth fault current reversal, neutral cut, magnetic tampering

check for earth fault tamper (Load earthing)
compare the phase current is within 12% of the neutral current

if tampering persist for 15 secs update the led status

check the status for Current Reversal tampering

if tampering detected toggle the TAMPER_CURRENT_REVERSAL LED

check the status for Neutral CUT tampering and configure the status led

check the status of Magnetic tamper flag and update the LED

Definition at line 58 of file meter_task.c.