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ButterflyMP3
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Butterfly MP3 Power Routines. More...
#include "types.h"
Go to the source code of this file.
Defines | |
| #define | PWR_MAX_V 0x28f |
| 4.2V | |
| #define | PWR_GOOD_V 0x260 |
| 3.85V | |
| #define | PWR_LOW_V 0x23c |
| 3.6V average voltage | |
| #define | PWR_MIN_V 0x1D9 |
| 3.0V | |
| #define | PWR_ABS_MIN_V 0x1C0 |
| 2.8V absolute minimum allowed battery voltage | |
Functions | |
| void | Power_Init (void) |
| Power_Init. | |
| void | Power_idle (void) |
| Power_idle. | |
| void | Power_save (void) |
| Power_save. | |
| void | Power_off (void) |
| Power_off. | |
| uint16 | Power_check (void) |
| Power_check. | |
| uint16 | Power_pcnt (uint16 voltage) |
| Power_pcnt. | |
Variables | |
| volatile uint8 | gPowerSaveTimer |
Butterfly MP3 Power Routines.
Copyright (C) 2004 Nick Lott <brokentoaster@users.sf.net> 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
Definition in file power.h.
| #define PWR_ABS_MIN_V 0x1C0 |
2.8V absolute minimum allowed battery voltage
Definition at line 53 of file power.h.
Referenced by mainTimer(), and Power_pcnt().
| #define PWR_GOOD_V 0x260 |
| #define PWR_LOW_V 0x23c |
3.6V average voltage
Definition at line 51 of file power.h.
Referenced by mainTimer(), and Power_pcnt().
| #define PWR_MAX_V 0x28f |
| #define PWR_MIN_V 0x1D9 |
| uint16 Power_check | ( | void | ) |
Power_check.
Check the battery voltage and return level
Definition at line 205 of file power.c.
References EOL, PRINT, and UART_Printfu16().
Referenced by init_HW(), mainTimer(), and update_LCD().
| void Power_idle | ( | void | ) |
| void Power_Init | ( | void | ) |
Power_Init.
Set up ADC for monitoring the battery voltage using the internal 1.1V reference.
Definition at line 179 of file power.c.
References VOLTAGE_SENSOR.
Referenced by init_HW().
| void Power_off | ( | void | ) |
Power_off.
Shut down all non essential systems and go into low power mode.
Definition at line 91 of file power.c.
References CBI, EOL, getkey(), gPowerSaveTimer, LCD_Sleep(), LCD_Wake(), Power_save(), PRINT, RESET_PIN, RESET_PORT, save_player_options(), save_player_state(), SBI, SCI_MODE, UART_Init(), UART_Shutdown(), vs1001_read(), and vs1001_write().
Referenced by handle_interface(), and main().
Power_pcnt.
Returns the ammount of percentage remaingin battery time based on experimental values.
| mins | % | ADC | ADC | ~Voltage |
| 0 | 100 | 655 | 0x28f | 4.2 |
| 400 | 66 | 608 | 0x260 | 3.9 |
| 1050 | 12 | 572 | 0x23c | 3.6 |
| 1200 | 0 | 445 | 0x1BD | 2.8 |
| voltage | uint16 reading from ADC |
Definition at line 254 of file power.c.
References PWR_ABS_MIN_V, PWR_GOOD_V, PWR_LOW_V, and PWR_MAX_V.
Referenced by update_LCD().
| void Power_save | ( | void | ) |
Power_save.
Set Butterfly into powersave mode when nothing happening Keep timer2 and pin change interupts on only.
Definition at line 58 of file power.c.
Referenced by Power_off().
| volatile uint8 gPowerSaveTimer |
Definition at line 55 of file power.h.
Referenced by handle_interface(), handle_mmc(), main(), mainTimer(), and Power_off().
1.7.3