Uzewav.c File Reference

uzewave library based on Uzeamp More...

#include <stdbool.h>
#include <avr/io.h>
#include <stdlib.h>
#include <avr/pgmspace.h>
#include <uzebox.h>
#include <mmc.h>
#include <avr/interrupt.h>
#include "uzewav.h"

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Functions
u8	SD_init (void)
int	convert_filename (unsigned char *fname)
void	play_queue ()
void	startSong ()
void	stopSong ()
void	stop_auto ()
void	fat_init (unsigned char *buffer)
long	GetFileSector (DirectoryTableEntry *file)
u8	find_files (const char *s)
void	mmc_mixerStart (uint32_t lba)
void	mmc_mixerStop ()
uint32_t	mmc_mixerGetCurrentSector ()
void	mmc_processMixer ()
Variables
File	files [MAX_WAVES]
	array with file entries
char	wav_queue [7] = {-99,-99,-99,-99,-99,-99,-99}
	queue with wave files for playing
bool	playing = false
	voice output of a file is running
unsigned long	sectorNo = 0
unsigned int	cur
unsigned int	playingFile = 0
unsigned int	x
unsigned int	y
unsigned long	songSize = 0
bool	cardDetected = false
	SD card detected.
long	bootRecordSector
int	reservedSectors
int	sectorsPerFat
unsigned char	maxRootDirectorySectors
long	dirTableSector
uint32_t	mmc_mixer_sector
bool	mmc_mixer_active = false
long	sectorsPerCluster
long	maxRootDirectoryEntries
long	bytesPerSector
int	mixerRead
int	sectorRead

---

Detailed Description

uzewave library based on Uzeamp

Version:

1.1

Date:

2012

Author:

Hartmut Wendt info@hwhardsoft.de.vu <http://www.hwhardsoft.de.vu/>

Alec Bourque <http://www.uzebox.org>

Copyright:

GNU Public License V3

Note:

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 3 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, see <http://www.gnu.org/licenses/>.

---

Function Documentation

int convert_filename

(

unsigned char *

fname

)

convert the first 2 chars of WAV filename to a number

Parameters:

pointer

to filename

Return values:

0..98	numeric values of two first chars in filename
99	first 2 chars are not numeric values

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void fat_init

(

unsigned char *

buffer

)

init the FAT of the SD card

Parameters:

pointer

to buffer

Returns:

none

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u8 find_files

(

const char *

s

)

find valid files with extension of *char in the directory and store their first sector & filesize

Parameters:

pointer

to string in flash with the file extension for example "GER" or "ENG"

Returns:

count of found files

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long GetFileSector

(

DirectoryTableEntry *

file

)

get the file sector from the SD card

Parameters:

pointer

to a directory table entry

Returns:

directory table

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uint32_t mmc_mixerGetCurrentSector

(

)

get current sector from SD card for playing

Parameters:

void

Returns:

current sector

void mmc_mixerStart

(

uint32_t

lba

)

start the mixer for sound output

Parameters:

LBA	(Logical Block Addressing)

Returns:

none

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void mmc_mixerStop

(

)

stop the mixer for sound output

Parameters:

void

Returns:

none

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void mmc_processMixer

(

)

sound output - call once on each vsync

Parameters:

void

Returns:

none

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void play_queue

(

)

play automaticaly the wave files from queue

Parameters:

void

Returns:

none

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u8 SD_init

(

void

)

init the SD card for voice output

Parameters:

void

Return values:

0	SD card init FAILED
1	FIRST READ FAILED
2	SD card init ok

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void startSong

(

)

start playing of voice file

Parameters:

void

Returns:

none

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void stop_auto

(

)

stop playing of voice file automaticaly at the end of voice file

Parameters:

void

Returns:

none

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void stopSong

(

)

stop playing of voice file before the end of voice file

Parameters:

void

Returns:

none

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