power.h

butterfly MP3源代码

/**
@file	power.c
 @brief	Butterfly MP3 Power Routines
 @author	Nick Lott 
 @date	January 2006
 
 Copyright (C) 2004 Nick Lott <[e-mail]>
 http://butterflymp3.sf.net/
 
 This is the power control software for the ButterflyMP3 project.
 This file contains all software responsible for controlling the
 power save modes for the mp3 player.
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software Foundation, 
 Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 Target(s)...: ATmega169
 
 Compiler....: AVR-GCC 3.3.1; avr-libc 1.2
 
 **/

#ifndef POWER_H
#define POWER_H
#include "types.h"

#define PWR_MAX_V		0x290 ///< 4.2V
#define PWR_GOOD_V		0x268 ///< 3.85V
#define PWR_AVG_V		0x240 ///< 3.6V average voltage
#define PWR_MIN_V		0x1D9 ///< 3.0V
#define PWR_ABS_MIN_V	0x1C0 ///< 2.8V absolute minimum allowed battery voltage

volatile uint8 	gPowerSaveTimer;  	// used for sleep mode power down

void	Power_Init(void);
void 	Power_idle(void);
void 	Power_save(void);
void 	Power_off(void);
uint16	Power_check(void);

#endif