yampp3_usb.c

老外个人做的MP3/优盘。使用ATMEL MEGA系列的MCU

/* ***********************************************************************
**
**  Copyright (C) 2002  Jesper Hansen <[e-mail]> and 
**			Romuald Bialy (MIS) <[e-mail]>.
**
**
**  Yampp-3/USB - main file
**
**  File yampp3_usb.c
**
*************************************************************************
**
**   This file is part of the yampp system.
**
**  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.
**
*************************************************************************
**
**  Revision History
**
**  when         what  who	why
**
**  2002-09-01   1.0   MIS    	-initial public release
**  2002-09-25   1.10  Jesper	-solved problems with some IR remotes standard detection
**  2002-09-27   1.11  MIS	-improved visualisation on 4 lines LCD's
**  2002-09-28   1.12  MIS	-next visualisation improvements (see Constants.h)
**  2002-10-10   1.13  MIS	-visualisation changes in MENU function
				-added numeric volume level (in dB) on LCD longer than 16 chars.
				-fixed sound breaking after exit from PAUSE state.
				-added prevous playlist if mode=1 and you press PREVOUS key
**  2002-10-20   1.14  MIS	-bugfix in playlist name displaying on 4 lines LCD
**  2002-10-21   1.15  MIS	-added total song time displaying
**  2002-10-26   1.16  MIS	-bugfix in volume indicator clearing
**  2002-11-02   1.17  MIS	-added support for vs1001 equalizer running and settings
**  2002-11-08   1.20  MIS	-added suport for graphics LCD display from Nokia GSM phones
**  2002-11-10   1.21  MIS	-added bitrate displaying on graphisc LCD.
**				-posibility to use bigger logo (84x40 pixels)
**				-two versions of progresspar on graphisc LCD.
**				-invert mode (negative image) on graphisc LCD.
**				-some minor bugfixes.
**  2002-11-14   1.22  MIS	-added national characters conversion in standard alphanumeric LCD's.
**  2002-12-18   1.23  MIS	-added storing time mode into EEPROM.
**  2002-12-22   1.24  MIS	-added support for older than K versions of VS1001.
**  2003-02-23   1.25  MIS	-added support for new version of VS1001 equalizer library with 12 presets
**  2003-04-10   1.26  MIS	-added balance control
				-added quick equalizer ON/OFF function (from remote or local keyboard),
				 filter number is selectable from Menu and Remote.
				-added Info about current song in EV_INFO event
				-added auto accept selected song - during song browse, if current song ends.
				-fixed progressbar flicker during fast rewind
				-if 8 keys control is used -> removed not needed functions from Menu
				-fixed bug in setup remote procedures
				-code optimalisation
**  2003-06-15   1.27  MIS	-added storing current position inside song after PAUSE and power-off
				-added direct Playlist and Song number select in "Playlist" menu (numerical keys at remote).
				-added volume ramp-up after startup the player with the autoplay.
				-added new optional "PREVOUS" key functionality (work like in normal CD players).
				-added compatibility for some extended RC-5 remotes.
				-added volume level dB displaying on 16 chars line length LCD's.
				-little ata procedures speed-up.
				-fixed volume bug during fast forward and rewind.
				-disable songbase and playlist caching for code space recovery (not needed anyway)
				-some first attempt to Remote Yampp Sattelite Display support. Not finished yet.

**  2003-07-10   1.30b1  MIS	-Sources changed for compilation with AVR-GCC 3.3 !!!
				-fixed progressbar bug during fast forward and rewind after volume change.
				-fixed uart info formating
				-improved IR remote codes learning
				-better IR remote autorepeat function
				-finished full Remote Yampp Sattelite Display support.
				-added support for Graphics 128x64 display.
				-added support for Rottary Switch control.

**  2003-08-10   1.30b2  MIS	-New autorepeat function not work on REC80 remotes. Revert to old and working.
				-Fixed small displaying bug on 128x64 graphics LCD.
				-Fixed volume bar on nokia LCD's.

*********************************************************************** */

#define YAMPP_FIRMWARE_VERSION_MAJOR	1
#define YAMPP_FIRMWARE_VERSION_MINOR	30

#define DISK_LAYOUT_VERSION_MAJOR	1
#define DISK_LAYOUT_VERSION_MINOR	0

static char firmware_scan_tag[] __attribute__ ((progmem)) = "yfwTAG";
static char model_txt[]         __attribute__ ((progmem)) = "yampp-3/USB";
static char date_txt[]          __attribute__ ((progmem)) = __DATE__" / "__TIME__;
static char version_txt[]       __attribute__ ((progmem)) = "1.30";


/*
	PIN assignements on the yampp3/USB board
	
	PA0-PA7		data bus 0..7 + Address 0..7
	
	PB0		T0	DIOW
	PB1		T1	DIOR
	PB2		AIN0	DREQ
	PB3		AIN1	BSYNC		
	PB4		SS	MP3
	PB5		MOSI	SO
	PB6		MISO 	SI
	PB7		SCK	SCK
	
	PC0-=C7		address 8..15	

	PD0		RxD	RS-232/RS-485 RX
	PD1		TxD	RS-232/RS-485 TX
	PD2		INT0	TX_ENABLE (alternatively KEY_INPUT2 or graphisc LCD C/D output)
	PD3		INT1	KEY_INPUT
	PD4		T0	TXE
	PD5		T1	RXE
	PD6		WR	RD
	PD7		RD	WR	

	PE0		ICP	IR-IN
	PE1		ALE	ALE
	PE2		OC1B	LCD_ENABLE


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

	The CPU is running with a 7.3728 MHz clock
*/

#define _SFR_ASM_COMPAT 1
#include "yampp3_usb.h"

//------------------------------------------------------------------------------------------

// Amount of small steps in LCD play position bar
#define LCD_STEPS ((LCD_LINE_LENGTH - 6) * 5)

//------------------------------------------------------------------------------------------

void idle(void);
void next_song(u08 mode);

event_e menu_event;

u08 isPlaying;				// playing status
#ifdef ENABLE_USB_PLAYING
 u08 usb_play;				// usb playing status
#else
 #define usb_play 0
#endif
u08 bLoudness;				// loudness modificator
u08 bRandom;				// random modificator
u08 Repeat;				// repeat modificator
u08 info_flag;				// 0=enable display, 1,2=only scroll enabled, 3,4=disable update
u08 timemode;				// normal or remain time displaying modificator
u08 volume;				// volume level
s08 balance;

u08 vol_decrease;			// modificator for fast forward and fast rewind functions
u16 BackStepPos;			// Actual position in backstep tabele
u08 OldSteps;				// For progressbar displaying

u08 *outptr;				// pointer for sending data to vs1001
u08 *buffer1;				// first play buffer begin pointer
u08 *buffer2;				// second play buffer begin pointer
u08 *buffer3;				// second play buffer end pointer
u08 *updbuf;				// pointer for buffer updating
u32 filesize;				// size of file to play (divided by 32)
u32 fileplayed;				// amount of played data (divided by 32)
u16 songtime;				// time of current song in seconds
u16 addtime;				// time calculation helper for fast forward and fast rewind functions
u16 bitrate;				// bitrate of current song
u16 ListQty;				// numbers of songs inside playlist

u16 vs1001_fw;				// VS1001 firmware address

u08 *artistname = (u08*)ARTISTNAME_BUF;	// pointer to artistname buffer
u08 *titlename = (u08*)SONGNAME_BUF;	// pointer to songname buffer
u08 *scroll_line = (u08*)SCROLL_LINE;	// pointer to scroll line buffer
u08 scroll_length;			// size of scroll data
u08 scroll_pos;				// current position in scroll string

#ifdef ALTERNATE_SCROLL
 u08 scroll_dir;
#endif

#ifdef VOL_UP_RAMP
 u08 volume_ramp;			// volume level multiplier at volume startup ramp
#endif

#if (LCD_LINES != 2)
 u08 scroll_length_2;			// size of scroll data 2
 u08 scroll_pos_2;			// current position in scroll string 2
 #ifdef ALTERNATE_SCROLL
  u08 scroll_dir_2;
 #endif
#endif

#ifdef OLD_VS1001
 u16 wPlayT;
 #define playtime	(wPlayT/10)
#else
 #define playtime 	vs1001_read(VS1001_PLAYTIME)
#endif

u16 OldPlayTime;

//---------------------------------------------------------------------------

void ATA_SW_Reset2(void)					// ATA Reset
{
	WriteBYTE(ATAPI_DevCtrl, 0x06);				// SRST and nIEN bits
	delay10();						// 10uS delay
	WriteBYTE(ATAPI_DevCtrl, 0x02);				// nIEN bit
	delay10();						// 10 uS delay
	while ( (ATA_WaitBusy() & SR_DRDY) != SR_DRDY ); 	// Wait for DRDY
  	ATA_ReadStat();
}

void ATA_Standby(u08 time)
{
	WriteBYTE(ATA_SectorCount, time);			// time * 5 second (0=disable)
	WriteBYTE(ATAPI_Cmd, 0xE3);				// set standby timer and execute IDLE
	ATA_WaitBusy();
}

//----------------------------------------------------------------------------

#define EVENT_QUEUE_SIZE	8
volatile event_e event_queue[EVENT_QUEUE_SIZE];
volatile u08 event_queue_head = 0;
volatile u08 event_queue_tail = 0;

void set_event(event_e e)
{
	event_queue[event_queue_head] = e;
	event_queue_head = (event_queue_head + 1) % EVENT_QUEUE_SIZE; 
}

event_e get_event(void)
{
	event_e tmp = EV_IDLE;
	
	//
	// let the system have it's time
	//
	idle();
	
	//
	// check queue
	//
	if (event_queue_head != event_queue_tail)
	{
		tmp = event_queue[event_queue_tail];
		event_queue_tail = (event_queue_tail + 1) % EVENT_QUEUE_SIZE; 
	}
	return tmp;
}

//--------------------------------------------------------------------------

// prescaler set to 34.72 uS
// 2880 ticks = 100 mS

#define TI1_H	(((u16)-(F_CPU / 2560)) >> 8)
#define TI1_L	(((u16)-(F_CPU / 2560)) & 0xff )

volatile u08 time_flag;			// counter for display refresh
volatile u08 scroll_time;		// counter for scrolling refresh

SIGNAL(SIG_OVERFLOW1)			// timer 1 overflow every 100 mS
{
	time_flag++;
	nKeyTime++;			// counter for keyboard and IR functions
	scroll_time++;
#ifdef OLD_VS1001
	wPlayT++;			// playing time counter for older than K versions of VS1001
#endif
	outp(TI1_H, TCNT1H);		// reload timer 
	outp(TI1_L, TCNT1L);
}

//--------------------------------------------------------------------------
#ifdef PWR_BEEPS

void send_sinewave_beeps(void)
{
	u08 i,j=3;
static	u08 buf[8] = {	0x53, 0xEF, 0x6E, 0x30,		// sine on
			0x45, 0x78, 0x69, 0x74};	// sine off
	vs1001_nulls(4);
	while(j--)
	{
		for (i=0;i<4;i++)
			vs1001_send_data(buf[i]);
		vs1001_nulls(4);
		delayms(100);
		
		for (i=4;i<8;i++)
			vs1001_send_data(buf[i]);
		vs1001_nulls(4);
		delayms(100);
	}	
}

#endif
//--------------------------------------------------------------------------

#if !defined(SATTELITE) && (LCD_TYPE != 8)
void lcd_clrline(u08 line)		// clear single line of LCD
{
	register u08 i=LCD_LINE_LENGTH;
	Vlcd_gotoxy(0,line);

	while(i--)
		Vlcd_putchar(' ');

	Vlcd_gotoxy(0,line);		// goto begin of line
}
#endif

//--------------------------------------------------------------------------

void LoudSet(void)					// Equalizer mode setting
{
	if (vs1001_fw)					// If Equalizer loaded
	{
		if(bLoudness && bLoudness<128)		
		{
			vs1001_write(0x0A,vs1001_fw);	// Enable user code
			vs1001_write(0x0D,0);		// Reset EQ
			vs1001_write(0x0D,bLoudness);	// Set EQ characteristic
		}
		else
		{
			vs1001_write(0x0D,0);		// Reset EQ
			vs1001_write(0x0A,0);		// Disable user code
		}
	}
	else
		vs1001_write(VS1001_MODE, 0x0080 * (bLoudness != 0));	// write bit SM_BASS to VS1001K

#ifdef VOL_UP_RAMP
	vs1001_setvolume(volume + 2*volume_ramp, balance);
#else
	vs1001_setvolume(volume,balance);
#endif
}

//--------------------------------------------------------------------------

#ifdef GRAPH_LCD

void Vlcd_wrdata0(void)
{
	Vlcd_wrdata(0);
}

void status_display(void)
{
	u08 i = 0;
#if(LCD_TYPE == 7)
	Vlcd_gotoxy(0,LCD_LINES+1);
#else
	Vlcd_gotoxy(13,LCD_LINES+1);
#endif	
	if (bRandom)
	{
		i=127;
		Vlcd_invert();
	}
	Vlcd_wrdata(i);
	Vlcd_progputs(PSTR("\x16\x17"));				// Random signs
	Vlcd_normal();
	Vlcd_wrdata(i);
	Vlcd_wrdata0();

	Vlcd_putchar(Repeat + 0x18 - 1*(Repeat > 0));			// Repeat sign L
	Vlcd_putchar(Repeat + 0x1b - 1*(Repeat > 1));			// Repeat sign R	
#if(LCD_TYPE == 8)
	Vlcd_gotoxy(19,7);
#else
	Vlcd_wrdata0();
	Vlcd_wrdata0();
#endif
	Vlcd_putchar('L');						// EQ mode
	if (bLoudness < 128)
		Vlcd_putchar((bLoudness > 9) ? bLoudness + ('A'-10) : bLoudness + '0');
	else
		Vlcd_putchar('0');

#ifdef VOL_UP_RAMP
	u08 v = volume+2*volume_ramp;
#else
	u08v = volume;	
#endif

#ifndef SATTELITE
 #if(LCD_TYPE == 8)
	Vlcd_gotoxy(13,6);
 #endif
	if (v <  MIN_VOLUME)
	{
		for (i=0; i<((LCD_TYPE == 7) ? 16 : 23); i++)		// Volume Bar
		{
			if(MIN_VOLUME - v >= i * VOL_STEP * NUM_VOL_STEPS / ((LCD_TYPE == 7) ? 16 : 22))
#if(LCD_TYPE == 7)
				Vlcd_wrdata(0xff << (8 - (i+1)/2));
#else
				Vlcd_wrdata((u08)(0xff << (8 - (i+1)/3)) >> 1);
#endif
			else
				Vlcd_wrdata0();
		}

	}
	else
	{
		Vlcd_wrdata0();
		Vlcd_putchar(0x1e);			// speaker
		Vlcd_wrdata0();
		Vlcd_wrdata0();
		Vlcd_putchar('x');
		Vlcd_wrdata0();
		Vlcd_wrdata0();
	}

#else //SATTELITE
	uart_pc1(SAT_CMD_MARKER);
	uart_pc1(SAT_VOLUME);
	uart_pc1(v);
	uart_pc1(MIN_VOLUME);
	uart_pc1(NUM_VOL_STEPS);
#endif

	if (isPlaying && !info_flag)
	{
		i = (v > 19);
	
#if(LCD_TYPE == 7)
		Vlcd_gotoxy(10-i,LCD_LINES+1);
#else
		Vlcd_gotoxy(17-i,LCD_LINES);
#endif
		if(i)
			Vlcd_putchar(' ');

		lprintf("%3uk",bitrate);
	}	
}


#else // Alphanumerics LCD's

void lcd_data00(void)
{
	Vlcd_data(0x00);
}

void lcd_data1f(void)
{
	Vlcd_data(0x1F);
}

#endif //GRAPH_LCD

//--------------------------------------------------------------------------

void setvolume(u08 v)
{
#ifdef VOL_UP_RAMP
	v = v+2*volume_ramp;
#endif
	vs1001_setvolume(v,balance);

#ifdef SATTELITE
	uart_pc1(SAT_CMD_MARKER);
	uart_pc1(SAT_VOLUME);
	uart_pc1(v);
	uart_pc1(MIN_VOLUME);
	uart_pc1(NUM_VOL_STEPS);
#else

 #ifndef GRAPH_LCD
	u08 i,j;					// volume indicator on alphanumeric LCD's

	if(!usb_play)
	{
		Vlcd_command(0x40);			// define of volume bar characters