䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
෎Ѣ STM32(ARMV7)ⱘ MP3 ᪁ᬒ఼
԰㗙
fire
E-Mail
[email protected]
QQ
313303034
मᅶ
firestm32.blog.chinaunix.net
⹀ӊᑇৄ
䞢☿ STM32 ᓔথᵓ
ᑧ⠜
⠜ᴀ
ST3.0.0
ᅲ偠ᦣ䗄˖ᇚ MicroSD व(ҹ᭛ӊ㋏㒳 FATFS 䆓䯂)䞠䴶ⱘ mp3 ᭛ӊ䗮䖛 VS1003B 㾷
ⷕˈ✊ৢᇚ㾷ⷕৢⱘ᭄᥂䗕ࠄࡳᬒ TDA1308 ৢ䗮䖛㘇ᴎ᪁ᬒߎᴹˈᑊ೼
LCD Ёᰒ⼎᳆Ⳃ੠㡎ᴃᆊˈᬃᣕЁ㣅᭛ᰒ⼎DŽ䖭䚼ߚ䳔㽕 LCD ⱘᬃᣕˈ᳝
݇ LCD ⱘ᪡԰䇋ᶹⳟ LCD ⱘ䙷䚼ߚ pdf ᬭ⿟DŽ
⊼˖䞢☿ stm32 ᓔথᵓЁᵓ䕑ⱘ mp3 䎳䖭䞠ⱘ᥹ষᰃϔḋⱘDŽ
㒃᠟Ꮉᠧ䗴 MP3ˈVS1003 ⹀㾷ⷕˈ໪ࡴゟԧ㘇ᴎࡳᬒ TDA1308ˈ䷇䋼෾↨⬉㛥DŽ
1 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
MP3 Ϣᓔথᵓⱘ᥹㒓
⹀ӊ䖲᥹˖PB13-SPI2_SCK : VS1003B-SCLK
PB14-SPI2_MISO : VS1003B-SO
PB15-SPI2_MOSI : VS1003B-SI
PB12-SPI2_NSS : VS1003B-XCS
PB11
: VS1003B-XRET
PC6
: VS1003B-XDCS
PC7
: VS1003B-DREQ
ᑧ᭛ӊ ˖startup/start_stm32f10x_hd.c
CMSIS/core_cm3.c
CMSIS/system_stm32f10x.c
FWlib/stm32f10x_gpio.c
FWlib/stm32f10x_rcc.c
FWlib/stm32f10x_usart.c
FWlib/stm32f10x_sdio.c
FWlib/stm32f10x_dma.c
FWlib/stm32f10x_spi.c
FWlib/misc.c
FWlib/fsmc.c
2 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
⫼᠋᭛ӊ: USER/main.c
USER/stm32f10x_it.c
USER/sdcard.c
USER/diakio.c
USER/ff.c
USER/usart1.c
USER/vs1003.c
USER/SysTick.c
USER/lcd.c
USER/sd_fs_app.c
USER/sd_bmp.c
USER/mp3play.c
䞢☿ STM32 ᓔথᵓЁ MP3 ⱘ⹀ӊॳ⧚೒˖
3 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
㾷ⷕ䚼ߚ䞛⫼ VS1003-MP3/WMA ䷇乥㾷ⷕ఼ˈ✊ৢᇚ㾷ⷕৢⱘ᭄᥂䗕 TDA1308
ᬒ໻ৢ⬅䷇乥᥹ষ໪᪁ߎᴹDŽ
VS1003+TDA1308 ㅔҟ->
VS1003 ᰃϔϾऩ⠛ MP3/WMA/MIDI ䷇乥㾷ⷕ఼੠ ADPCM 㓪ⷕ఼DŽᅗࣙ৿ϔϾ
催ᗻ㛑ˈ㞾ЏѻᴗⱘԢࡳ㗫 DSP ໘⧚఼Ḍ VS_DSP 4 ,Ꮉ԰᭄᥂ᄬ‫ˈ఼ټ‬Ў⫼᠋ᑨ⫼
ᦤկ 5KB ⱘᣛҸ RAM ੠ 0.5KB ⱘ᭄᥂ RAMDŽІ㸠ⱘ᥻ࠊ੠᭄᥂᥹ষˈ4 Ͼᐌ㾘⫼䗨
ⱘ I/O ষˈϔϾ UARTˈг᳝ϔϾ催ક䋼ৃব䞛ḋ⥛ⱘ ADC ੠ゟԧໄ DACˈ䖬᳝ϔϾ
㘇ᴎᬒ໻఼੠ഄ㒓㓧‫఼ކ‬DŽ
VS1003 䗮䖛ϔϾІ㸠᥹ষᴹ᥹ᬊ䕧ܹⱘ↨⡍⌕ˈᅗৃҹ԰ЎϔϾ㋏㒳ⱘҢᴎDŽ䕧
ܹⱘ↨⡍⌕㹿㾷ⷕˈ✊ৢ䗮䖛ϔϾ᭄ᄫ䷇䞣᥻ࠊ఼ࠄ䖒ϔϾ 18 ԡ䖛䞛ḋ໮ԡ¦-
DACDŽ䗮䖛І㸠ᘏ㒓᥻ࠊ㾷ⷕ఼DŽ䰸њ෎ᴀⱘ㾷ⷕˈ೼⫼᠋ RAM Ёᅗ䖬ৃҹ‫݊خ‬Ҫ⡍
⅞ᑨ⫼ˈ՟བ DSP ䷇ᬜ໘⧚DŽ
VS1003 ॳ⧚Ḛ೒˖
4 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
ᴀᅲ偠Ё៥Ӏা⫼њ㑶㡆೚೜Ёⱘ䙷޴Ͼ᭄᥂ষˈ䖭ѯ᭄᥂ষᰃІ㸠῵ᓣⱘˈ៥
Ӏ⫼ࠄњᓔথᵓЁⱘ SPI2 ᴹ᥻ࠊDŽ݊Ё᭄᥂㒣 SI ᥹ষ䖯এˈ㒣㾷ⷕৢ⬅ LǃR 䖭ϸϾ
Ꮊেໄ䘧ᓩ㛮ߎᴹˈ಴Ў VS1003 ‫ݙ‬䚼䲚៤њϔϾ DAˈ᠔ҹߎᴹⱘ᭄᥂ᰃ῵ᢳⱘˈৃ
Ⳉ᥹偅ࡼ㘇ᴎˈԚ⬅Ѣࡳ⥛໾ᇣˈ䷇ᬜϡՇˈ᠔ҹ៥Ӏᇚֵো䗕ᕔ TDA1308 ᬒ໻ৢ‫ݡ‬
䗮䖛㘇ᴎ໪ᬒߎᴹˈ㒣䖛䖭ḋߎᴹПৢ䷇䋼䎳⬉㛥Ϟⱘ᳝ⱘ↨DŽ⦄೼Ꮦ䴶Ϟⱘ MP3 ῵
ഫ෎Ѣ៤ᴀ㗗㰥䛑≵ࡴ䷇乥ࡳᬒˈ㗠ᰃⳈ᥹偅ࡼ䷇乥㘇ᴎˈᬜᵰৃᛇ㗠ⶹDŽ
TDA1308 ᰃϔℒঠ䗮䘧ⱘゟԧ㘇ᴎ偅ࡼ఼ˈᰃϔℒϧ䮼⫼Ѣໄ䷇偅ࡼⱘࡳᬒDŽ݊
ॳ⧚Ḛ೒བϟ˖
5 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
᳝݇ VS1003B ੠ TDA1308 ⱘ䆺㒚ᑨ⫼ˈ໻ᆊৃখ㗗ᅬᮍⱘ datasheetDŽ
ᴀᅲ偠ᰃ೼ ljMicroSD व+FATFSNJ䖭Ͼᅲ偠෎⸔Ϟ䖯㸠ⱘDŽ ≵‫خ‬䖛䖭Ͼᅲ偠ⱘ
䆱ৃখ㗗ࠡ䴶ⱘᬭ⿟DŽ
-------------------------------------MP3 ⶹ䆚ᠿⳆ----------------------------------------೼䆆㾷ᅲ偠Пࠡˈ‫ܜ‬໻ὖњ㾷ϟ MP3 ⱘⶹ䆚DŽ
z
MP3 ᭛ӊὖ䗄->
MP3 ᭛ӊᰃ⬅ᏻ(frame)ᵘ៤ⱘˈᏻᰃ MP3 ᭛ӊ᳔ᇣⱘ㒘៤ऩԡDŽMP3 ⱘܼ⿄Ў
MPEG1Layer-3 ䷇乥᭛ӊˈMPEG(Moving Pictures Experts Group)೼∝䇁Ё㗏䆥Ў⌏ࡼ
೒‫ڣ‬ϧᆊ㒘ˈ⡍ᣛ⌏ࡼᕅ䷇य़㓽ᷛ‫ˈޚ‬MPEG ䷇乥᭛ӊᰃ MPEG1 ᷛ‫ޚ‬Ёⱘໄ䷇䚼ߚˈ
гি MPEG ䷇乥ሖˈᅗḍ᥂य़㓽䋼䞣੠㓪ⷕ໡ᴖ⿟ᑺߦߚЎϝሖˈे Layer1ǃ
Layer2ǃLayer3ˈϨߚ߿ᇍᑨ MP1ǃMP2ǃMP3 䖭ϝ⾡䷇乥᭛ӊˈᑊḍ᥂ϡৠⱘ⫼
䗨ˈՓ⫼ϡৠሖ⃵ⱘ㓪ⷕDŽMPEG ䷇乥㓪ⷕⱘሖ⃵䍞催ˈ㓪ⷕ఼䍞໡ᴖˈय़㓽⥛г䍞
催ˈMP1 ੠ MP2 ⱘय़㓽⥛ߚ߿Ў 4˖1 ੠ 6˖1-8˖1ˈ㗠 MP3 ⱘय़㓽⥛߭催䖒 10˖112˖1DŽϡ䖛 MP3 ᇍ䷇乥ֵো䞛⫼ⱘᰃ᳝ᤳय़㓽ᮍᓣˈ᳾ᴹ䰡Ԣໄ䷇༅ⳳᑺˈMP3 䞛
⫼њĀᛳᅬ㓪ⷕᡔᴃāˈे㓪ⷕᯊ‫ܜ‬ᇍ䷇乥᭛ӊ䖯㸠乥䈅ߚᵤˈ✊ৢ⫼䖛Ⓒ఼Ⓒᥝా
䷇⬉ᑇˈ᥹ⴔ䗮䖛䞣࣪ⱘᮍᓣᇚ࠽ϟⱘ↣ϔԡᠧᬷᥦ߫ˈгህᰃ Huffman ᮴ᤳय़㓽㓪
6 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
ⷕˈ᳔ৢᔶ៤‫݋‬᳝䕗催य़㓽↨ⱘ MP3 ᭛ӊˈᑊՓय़㓽ৢⱘ᭛ӊ೼ಲᬒᯊ㛑໳䖒ࠄ↨䕗
᥹䖥ॳ䷇ⱘໄᬜDŽ
z
MP3 ᭛ӊ㒘៤->
MP3 ᭛ӊ໻ԧߚЎ 3 䚼ߚ:TAG_V2(ID3V2),Frame,TAG_V1(ID3V1)DŽ㽕⊼ᛣ᳝ѯ
MP3 ᭛ӊሒᰃ≵᳝ ID3V1 tag ⱘˈ᳝ⱘᰃ MP3 ᭛ӊ༈䚼ⱘ ID3V2 tagDŽ ݊Ё ID3V1 ᄬ
ᬒ೼ MP3 ᭛ӊⱘ᳿ሒ ˈ⫼ 16 䖯ࠊⱘ㓪䕥఼ᠧᓔϔϾ MP3 ᭛ӊˈ ᶹⳟ݊᳿ሒⱘ 128
Ͼ乎ᑣᄬᬒᄫ㡖ˈ᭄᥂㒧ᵘᅮНབϟ˖
1.
typedef struct tagID3V1
2.
{
3.
char Header[3];
// ᷛㅒ༈ᖙ乏ᰃ"TAG"ˈ৺߭㹿䅸Ў≵᳝ᷛㅒ༈
4.
char Title[30];
// ᷛ乬
5.
char Artist[30];
// ԰㗙
6.
char Album[30];
// ϧ䕥
7.
char Year[4];
// ߎકᑈҷ
8.
char Comment[28];
// ໛⊼
9.
char reserve;
// ֱ⬭
10.
char track;
// ䷇䔼
11.
char Genre;
// 亢Ḑ
12. }ID3V1, *pID3V1;
⦄೼ᕜ໮ MP3 ᭛ӊ᳝ⱘাᰃ ID3V2ˈ෎ᴀϞ䛑≵᳝њሒ䚼ⱘ ID3V1 њˈ᳝ ID3V1
ⱘᰃ↨䕗㗕ⱘ℠᳆ˈ䞢☿থ⦄‫ ڣ‬beyond ⱘ℠䛑৿᳝ ID3V1 tag ˈԚֵᙃгϡབϞ䴶ⱘ
㒧ᵘԧЁᦣ䗄ᕫ໮ˈϔ㠀᳝ⱘᰃ title ੠ artistDŽ䖭೼᥹ϟᴹⱘҷⷕЁৃⳟࠄ ID3V1 ⱘ
ᑨ⫼DŽ
ID3V1 ⱘ৘乍䛑ᰃ乎ᑣᄬᬒˈ≵᳝ӏԩᷛᖫᇚ݊ߚᓔˈ↨བᷛ乬ֵᙃϡ䎇 30 Ͼᄫ
㡖ˈ߭Փ⫼’\0’㸹䎇ˈ৺߭ᇚ䗴៤ֵᙃ䫭䇃DŽ
1ǃ
↣ᏻⱘ᪁ᬒᯊ䯈˖᮴䆎ᏻ䭓ᰃ໮ᇥˈ↣ᏻⱘ᪁ᬒᯊ䯈ᰃ 26msDŽ
2ǃ
᭄᥂ᏻ໻ᇣⱘ䅵ㅫ˖
3ǃ *1ǃ↣ᏻⱘ᪁ᬒᯊ䯈˖᮴䆎ᏻ䭓ᰃ໮ᇥˈ↣ᏻⱘ᪁ᬒᯊ䯈ᰃ 26msDŽ
4ǃ *2ǃ
FrameSize = ( (( MPEGVersion == MPEG1 ? 144 : 72 ) * Bitrate) / SampleRate
) + PaddingBit
5ǃ */
7 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
‹ ID3V2˖ࣙ৿њ԰㗙ˈ԰᳆ˈϧ䕥ㄝֵᙃˈ䭓ᑺϡ೎ᅮˈᠽሩњ ID3V1 ⱘֵᙃ
䞣DŽ
‹ Frame:ϔ㋏߫ⱘᏻˈϾ᭄⬅᭛ӊ໻ᇣ੠ᏻ䭓‫އ‬ᅮDŽ↣Ͼ frame ⱘᏻ䭓ৃ㛑೎
ᅮˈгৃ㛑ϡ೎ᅮˈ⬅ԡ⥛ bitrate ‫އ‬ᅮDŽ↣ϾᏻজߚЎᏻ༈੠᭄᥂ᅲԧϸ䚼
ߚDŽᏻ༈䆄ᔩњ mp3 ⱘԡ⥛ˈ䞛ḋ⥛ˈ⠜ᴀㄝֵᙃˈ↣ϾᏻП䯈ⳌѦ⣀ゟDŽ
‹ ID3V1˖ࣙ৿њ԰㗙ˈ԰᳆DŽϧ䕥ㄝֵᙃˈ䭓ᑺЎ 128 byteDŽ
↣Ͼ MP3 ᭄᥂ᏻ᳝ϔϾᏻ༈ FRAMHEADERˈ䭓ᑺᰃ 4 Ͼ byte(32bit)ˈᏻ༈ৢ䴶
ৃ㛑᳝ϸϾᄫ㡖ⱘ CRC ᷵偠ⷕˈ䖭ϸϾᄫ㡖ⱘᰃ৺ᄬ೼‫އ‬ᅮѢ FRAMHEADER ⱘ㄀
16bitˈЎ 0 ߭ᏻ༈ৢ䴶≵᷵偠ˈЎ 1 ᳝߭᷵偠ˈ᷵偠ؐ䭓ᑺЎ 2 Ͼᄫ㡖ˈ㋻䎳೼
FRAMHEADER ৢ䴶ˈ᥹ⴔህᰃᏻⱘᅲԧ᭄᥂њˈḐᓣབϟ˖
FRAMHEADER
CRC(free)
MAIN_DATA
4byte
0 or 2 byte
䭓ᑺ⬅ᏻ༈䅵ㅫᕫߎ
݇Ѣ MP3 ⱘⶹ䆚䞢☿‫ܜ‬䆆㾷ࠄ䖭ˈ݊Ҫⱘ⿡ৢ‫ݡ‬䆆㾷ˈϟ䴶៥Ӏᴹ‫݋‬ԧⳟⳟ⑤ⷕ
ⱘᅲ⦄DŽ
---------------------------------------------------------------------------------------------
ᅲ偠䆆㾷->
佪‫ܜ‬䳔㽕ᇚ䳔㽕⫼ࠄⱘᑧ᭛ӊ⏏ࡴ䖯ᴹˈ᳝݇ᑧⱘ䜡㕂ৃখ㗗ࠡ䴶ⱘᬭ⿟ˈ䖭䞠
ϡ‫ݡ‬䆺䗄DŽ೼䜡㕂དᑧⱘ⦃๗Пৢ៥ӀҢ main ߑ᭄ᓔྟߚᵤ˖
1. /*
2.
* ߑ᭄ৡ˖main
3.
* ᦣ䗄 ˖Џߑ᭄
4.
* 䕧ܹ ˖᮴
5.
* 䕧ߎ ˖᮴
6.
*/
7. int main(void)
8. {
9.
/* 䜡㕂㋏㒳ᯊ䩳Ў 72M */
10.
SystemInit();
11.
12.
/* 䜡㕂 SysTick Ў 10us Ёᮁϔ⃵ */
13.
SysTick_Init();
8 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
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51. }
/* 䜡㕂Іষ 1 115200 8-N-1 */
USART1_Config();
/* LED ߱ྟ࣪ˈ⫼Ѣ䇗䆩 */
LED_GPIO_Config();
/* 2.4TFT ߱ྟ࣪ */
LCD_Init();
/* ᭛ӊ㋏㒳߱ྟ࣪-----∝ᄫᄫᑧֱᄬ೼ sd वЁ */
sd_fs_init();
Set_direction(0);
/* 䆒㕂 LCD ⱘᠿᦣᮍ৥ˈ䖭䞠ЎൖⳈᠿᦣ*/
LCD_CLEAR(0,0,240,320);
//Lcd_show_bmp(0, 0,"/PIC.bmp");
USART1_printf( USART1, " \r\n 䖭ᰃϔϾ MP3 ⌟䆩՟⿟ !\r\n " );
/* MP3 ⹀ӊ I/O ߱ྟ࣪ */
VS1003_SPI_Init();
/* SD व⹀ӊ߱ྟ࣪ˈᑊ߱ྟ࣪ⲬヺЎ 0 */
//disk_initialize( 0 );
/* MP3 ህ㒾ˈ‫ޚ‬໛᪁ᬒˈ೼ vs1003.c ᅲ⦄ */
MP3_Start();
LED1(ON);
/* ᪁ᬒ SD व(FATFS)䞠䴶ⱘ䷇乥᭛ӊ */
MP3_Play();
while (1)
{
}
/* end of main */
ᑧߑ᭄ SystemInit();ᇚ៥Ӏⱘ㋏㒳ᯊ䩳䆒㕂Ў 72MHZˈ೼᠔᳝Ꮉ԰Пࠡ佪‫ܜ‬㽕‫ⱘخ‬
ህᰃ‫ܜ‬䆒㕂㋏㒳ᯊ䩳ˈ䖭ৃगϛ߿ᖬњDŽ೼ ST3.0.0 ⠜ᴀПৢⱘᑧЁˈ䖭䚼ߚᎹ԰䛑
ᬒ೼њਃࡼ᭛ӊЁњˈ⬅∛㓪ᅲ⦄ˈা㽕⫼᠋ҷⷕϔ䖯ܹ main ߑ᭄ህ㸼⼎Ꮖ㒣߱ྟ࣪
ད㋏㒳ᯊ䩳њˈᅠܼϡ⫼⫼᠋㗗㰥ˈ⫼᠋ϡⶹ䘧䖭⚍ⱘ䆱䖬ҹЎϡ䳔㽕߱ྟ࣪㋏㒳ᯊ
䩳ਸ਼DŽԚ៥Ӏ䖭䞠⫼ⱘᑧ⠜ᴀᰃ ST3.0.0ˈ᠔ҹ䖬ᰃ䳔㽕䇗⫼ᑧߑ᭄ SystemInit();ᴹ߱
ྟ࣪៥Ӏⱘ㋏㒳ᯊ䩳DŽ㟇Ѣ ST3.0.0 ੠Пৢ催⠜ᴀⱘᑧ᳝ҔМऎ߿ˈ៥ᛇ䇈ⱘᰃ≵Ҕ
М໻ⱘऎ߿ˈҷⷕⱘⳂᔩ㒧ᵘ෎ᴀ≵᳝ᬍবˈাᰃ೼ҷⷕⱘࡳ㛑๲໮њˈᬃᣕ᳈ᅠ୘
ⱘ໪䆒DŽ
SysTick Ў 10us Ёᮁϔ⃵⫼Ѣ
USART1_Config();
SysTick Ў 10us Ёᮁϔ⃵ˈ⫼Ѣৢ䴶ⱘᓊᯊߑ᭄DŽ
䜡㕂Іষ 1 ⊶⡍⥛Ў 115200 ˈ8 Ͼ᭄᥂ԡˈ1 Ͼ‫ذ‬ℶԡˈ᮴⹀ӊ⌕᥻
ࠊDŽ
LCD_Init();
⫼Ѣ߱ྟ࣪៥Ӏⱘ 2.4TFTˈ៥Ӏᇚ⫼ᅗᴹᰒ⼎៥Ӏⱘ MP3 ℠᳆ⱘֵᙃDŽ
9 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
sd_fs_init();⫼Ѣ߱ྟ࣪
MicroSD वᑩሖ⹀ӊˈᑊᇚⲬヺ߱ྟ࣪Ў 0ˈ䖬䆒㕂њ
MicroSD वⱘЁᮁӬ‫ܜ‬㑻ˈ䖭Ͼߑ᭄䞠䴶䇗⫼њ SDIO_NVIC_Configuration();
disk_initialize( 0 );
੠
䖭ϸϾߑ᭄DŽ䇗⫼ sd_fs_init();ߑ᭄ᰃ䴲ᐌ䞡㽕ⱘˈϡ✊
MicroSD वᰃᎹ԰ϡњⱘˈ᭛ӊ㋏㒳ḍᴀ䎥ϡ䍋ᴹˈMP3 ᭛ӊḍᴀህ䇏ϡߎᴹDŽ
disk_initialize( 0 );
⫼Ѣ߱ྟ࣪ MicroSD वⱘᑩሖ⹀ӊˈᑊᇚवⱘⲬヺ߱ྟ࣪Ў
0ˈⲬヺⱘ㣗ೈЎ 0~9ˈ⫼᠋ৃ䗝ˈ೼䖭䞠៥Ӏ䗝Ў 0DŽ
᥹ϟᴹⱘ޴Ͼߑ᭄໻ӭⳟ⊼䞞৻ˈ↨䕗ㅔऩˈ䞢☿ህϡ‫ݡ‬ୄ஺⌾䌍໻ᆊⱘᯊ䯈଺
^_^DŽ
VS1003_SPI_Init();⫼Ѣ߱ྟ࣪
MP3 㾷ⷕ㢃⠛ VS1003B 䳔㽕⫼ࠄⱘ I/O ষˈࣙᣀ᭄
᥂ষ(SPI2)੠᥻ࠊ I/ODŽVS1003_SPI_Init();⬅⫼᠋೼ vs1003.c Ёᅲ⦄˖
1.
* ߑ᭄ৡ˖VS1003_SPI_Init
2.
* ᦣ䗄 ˖VS1003 ᠔⫼ I/O ߱ྟ࣪
3.
* 䕧ܹ ˖᮴
4.
* 䕧ߎ ˖᮴
5.
* 䇗⫼ ˖໪䚼䇗⫼
6.
*/
7. void VS1003_SPI_Init(void)
8. {
9.
SPI_InitTypeDef SPI_InitStructure;
10.
GPIO_InitTypeDef GPIO_InitStructure;
11.
12.
/* Փ㛑 VS1003B ᠔⫼ I/O ⱘᯊ䩳 */
13.
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB | RCC_APB
2Periph_GPIOC , ENABLE);
14.
/* Փ㛑 SPI2 ᯊ䩳 */
15.
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2 ,ENABLE);
16.
17.
/* 䜡㕂 SPI2 ᓩ㛮: PB13-SCK, PB14-MISO ੠ PB15-MOSI */
18.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
19.
GPIO_InitStructure.GPIO_Speed =GPIO_Speed_50MHz;
20.
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
21.
GPIO_Init(GPIOB, &GPIO_InitStructure);
22.
23.
/* PB12-XCS(⠛䗝) */
24.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
25.
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
26.
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
27.
GPIO_Init(GPIOB, &GPIO_InitStructure);
28.
29.
/* PB11-XRST(໡ԡ) */
30.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
31.
GPIO_Init(GPIOB, &GPIO_InitStructure);
32.
33.
34.
/* PC6-XDCS(᭄᥂ੑҸ䗝ᢽ) */
35.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
36.
GPIO_Init(GPIOC, &GPIO_InitStructure);
37.
38.
/* PC7-DREQ(᭄᥂Ёᮁ) */
39.
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
40.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
41.
GPIO_Init(GPIOC, &GPIO_InitStructure);
42.
43.
/* SPI2 configuration */
44.
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
45.
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
10 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
46.
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SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_32;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
/* Enable SPI2 */
SPI_Cmd(SPI2, ENABLE);
‫؛‬བ៥Ӏ㽕ᇚ᭄᥂ষᤶ៤ SPI1 ៪㗙ᬍব݊Ҫ᥻ࠊ I/Oˈা䳔ᬍব䖭Ͼߑ᭄ेৃˈ
⿏ỡᗻ䴲ᐌᔎDŽ
disk_initialize( 0 );
⫼Ѣ߱ྟ࣪ MicroSD वⱘᑩሖ⹀ӊˈᑊᇚवⱘⲬヺ߱ྟ࣪Ў
0ˈⲬヺⱘ㣗ೈЎ 0~9ˈ⫼᠋ৃ䗝ˈ೼䖭䞠៥Ӏ䗝Ў 0DŽ
MP3_Start();
Փ MP3 䖯ܹህ㒾῵ᓣ(standby)ˈ䱣ᯊ᪁ᬒ䷇ФDŽMP3_Start();೼
vs1003.c Ёᅲ⦄˖
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/*
* ߑ᭄ৡ˖MP3_Start
* ᦣ䗄 ˖Փ MP3 䖯ܹህ㒾῵ᓣˈ䱣ᯊ‫ޚ‬໛᪁ᬒ䷇ФDŽ
* 䕧ܹ ˖᮴
* 䕧ߎ ˖᮴
* 䇗⫼ ˖໪䚼䇗⫼
*/
void MP3_Start(void)
{
u8 BassEnhanceValue = 0x00;
// Ԣ䷇ؐ‫࣪ྟ߱ܜ‬Ў 0
u8 TrebleEnhanceValue = 0x00;
// 催䷇ؐ‫࣪ྟ߱ܜ‬Ў 0
TRST_SET(0);
Delay_us( 1000 );
// 1000*10us = 10ms
VS1003_WriteByte(0xff);
TXDCS_SET(1);
TCS_SET(1);
TRST_SET(1);
Delay_us( 1000 );
// থ䗕ϔϾᄫ㡖ⱘ᮴ᬜ᭄᥂ˈਃࡼ SPI Ӵ䕧
Mp3WriteRegister( SPI_MODE,0x08,0x00);
// 䖯ܹ VS1003 ⱘ᪁ᬒ῵ᓣ
Mp3WriteRegister(3, 0x98, 0x00);
// 䆒㕂 vs1003 ⱘᯊ䩳,3 ‫ס‬乥
Mp3WriteRegister(5, 0xBB, 0x81);
// 䞛ḋ⥛ 48kˈゟԧໄ
// 䆒㕂䞡Ԣ䷇
Mp3WriteRegister(SPI_BASS, TrebleEnhanceValue, BassEnhanceValue);
Mp3WriteRegister(0x0b,0x00,0x00);
// VS1003 ䷇䞣
Delay_us( 1000 );
// ㄝᕙ DREQ Ў催
while( DREQ == 0 );
㸼⼎㛑໳᥹ফ䷇Ф᭄᥂䕧ܹ
}
ߑ᭄Ё⍝ঞࠄⱘᅣᅮН䛑೼ vs1003.h 䖭Ͼ༈᭛ӊЁᅲ⦄DŽ݇Ѣߑ᭄ЁЎҔМ㽕䖭
ḋ᪡԰ᆘᄬ఼ˈ៪㗙ЎҔМ㽕ᣝ✻䖭Ͼ乎ᑣᴹ᪡԰ᆘᄬ఼ˈ䇋໻ᆊᶹ䯙 vs1003 ⱘ
pdfˈ䞠䴶䆆ᕫᕜ䆺㒚ˈ᳝ e ᭛䎳Ё᭛䌘᭭DŽ
11 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
MP3_Play();
䖭Ͼߑ᭄䗤Ͼᠿᦣ៥Ӏ SD व䞠䴶ⱘ䷇乥᭛ӊˈᑊᇚ䖭ѯ䷇乥᭛ӊ䛑䗮
䖛㘇ᴎ᪁ᬒߎᴹˈ᳔ৢ‫ذ‬ℶˈ᱖ᯊ䖬≵ᅲ⦄ᕾ⦃᪁ᬒⱘࡳ㛑DŽMP3_Play();೼ vs1003.c
Ёᅲ⦄˖
1. /*
2.
* ߑ᭄ৡ˖MP3_Play
3.
* ᦣ䗄 ˖䇏প SD व䞠䴶ⱘ䷇乥᭛ӊˈᑊ䗮䖛㘇ᴎ᪁ᬒߎᴹ
4.
*
ᬃᣕⱘḐᓣ˖mp3,mid,wav,wma
5.
* 䕧ܹ ˖᮴
6.
* 䕧ߎ ˖᮴
7.
* 䇈ᯢ ˖᱖ϡᬃᣕ䭓᭛ӊৡˈϡᬃᣕЁ᭛DŽ
8.
*/
9. void MP3_Play(void)
10. {
11.
FRESULT res;
12.
FILINFO finfo;
13.
DIR dirs;
14.
u16 count = 0;
15.
char j = 0;
16.
char path[50] = {""}; /* MicroSD वḍⳂᔩ */
17.
char *result1, *result2, *result3, *result4;
18.
19.
f_mount(0, &fs);
/* ᣖ䕑᭛ӊ㋏㒳ࠄ 0 ऎ */
20.
21.
if (f_opendir(&dirs, path) == FR_OK)
/* ᠧᓔḍⳂᔩ */
22.
{
23.
while (f_readdir(&dirs, &finfo) == FR_OK)
/* ձ⃵䇏প᭛ӊৡ */
24.
{
25.
if ( finfo.fattrib & AM_ARC )
/* ߸ᮁᰃ৺Ўᄬḷൟ᭛ḷ */
26.
{
27.
if( !finfo.fname[0] )
/* ᭛ӊৡЎぎेࠄ䖒њⳂ
ᔩⱘ᳿ሒˈ䗔ߎ */
28.
break;
29.
USART1_printf( USART1, " \r\n ᭛ӊৡЎ: %s \r\n", finfo.fname );
30.
31.
result1 = strstr( finfo.fname, ".mp3" );
/* ߸ᮁᰃ৺Ў䷇乥᭛
ӊ */
32.
result2 = strstr( finfo.fname, ".mid" );
33.
result3 = strstr( finfo.fname, ".wav" );
34.
result4 = strstr( finfo.fname, ".wma" );
35.
36.
if ( result1!=NULL || result2!=NULL || result3!=NULL || result4
!=NULL )
37.
{
38.
PutChinese_strings22(10, 220, "ᓔྟ᪁ᬒ", 0, 1);
39.
40.
res = f_open( &fsrc, finfo.fname, FA_OPEN_EXISTING | FA_READ ); /*
ҹা䇏ᮍᓣᠧᓔ */
41.
42.
/* 㦋প℠᳆ֵᙃ(ID3V1 tag / ID3V2 tag) */
43.
if ( Read_ID3V1(&fsrc, &id3v1) == TRUE )
44.
{// ID3V1 tag
45.
printf( "\r\n ᳆Ⳃ
˖%s \r\n", id3v1.title );
46.
printf( "\r\n 㡎ᴃ
ᆊ ˖%s \r\n", id3v1.artist );
47.
48.
49.
PutChinese_strings22(10, 200, "᳆Ⳃ", 0, 1);
PutChinese_strings22(80, 200, id3v1.title, 0, 1);
50.
51.
52.
PutChinese_strings22(10, 180, "㡎ᴃᆊ", 0, 1);
PutChinese_strings22(80, 200, id3v1.artist, 0, 1);
53.
54.
}
else
12 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
{// ᳝ѯ MP3 ᭛ӊ≵᳝ ID3V1 tag,া᳝
55.
ID3V2 tag
56.
57.
58.
59.
60.
61.
62.
63.
res = f_lseek(&fsrc, 0);
Read_ID3V2(&fsrc, &id3v2);
printf( "\r\n ᳆Ⳃ
printf( "\r\n 㡎ᴃᆊ
˖%s \r\n", id3v2.title );
˖%s \r\n", id3v2.artist );
PutChinese_strings22(10, 200, "᳆Ⳃ", 0, 1);
PutChinese_strings22(80, 200, id3v2.title, 0, 1);
64.
65.
66.
PutChinese_strings22(10, 180, "㡎ᴃᆊ", 0, 1);
PutChinese_strings22(80, 180, id3v2.artist, 0, 1);
67.
68.
69.
}
/* Փ᭛ӊᣛ䩜 fsrc 䞡ᮄᣛ৥᭛ӊ༈ˈ಴Ў೼䇗⫼
Read_ID3V1/Read_ID3V2 ᯊˈfsrc ⱘԡ㕂ᬍবњ */
70.
res = f_open( &fsrc, finfo.fname, FA_OPEN_EXISTING | FA_REA
D );
71.
//res = f_lseek(&fsrc, 0);
72.
73.
br = 1;
/* br Ўܼሔব䞣 */
74.
TXDCS_SET( 0 );
/* 䗝ᢽ VS1003 ⱘ᭄᥂᥹ষ */
75. /* ------------------- ϔ᳆ᓔྟ --------------------*/
76.
USART1_printf( USART1, " \r\n ᓔྟ᪁ᬒ \r\n" );
77.
for (;;)
78.
{
79.
res = f_read( &fsrc, buffer, sizeof(buffer), &br );
80.
if ( res == 0 )
81.
{
82.
count = 0;
/* 512
ᄫ㡖ᅠ䞡ᮄ䅵᭄ */
83.
Delay_us( 1000 );
/* 10ms ᓊᯊ */
84.
while ( count < 512)
/* SD व䇏পϔϾ
sectorˈϔϾ sector Ў 512 ᄫ㡖 */
85.
{
86.
if ( DREQ != 0 )
/* ㄝᕙ DREQ Ў催ˈ䇋∖᭄᥂䕧
ܹ */
87.
{
88.
for (j=0; j<32; j++ ) /* VS1003 ⱘ FIFO
া᳝ 32 Ͼᄫ㡖ⱘ㓧‫* ކ‬/
89.
{
90.
VS1003_WriteByte( buffer[count] );
91.
92.
93.
94.
95.
96.
count++;
}
}
}
}
if (res || br == 0) break;
/* ߎ䫭៪㗙ࠄњ MP3 ᭛ӊ
ሒ */
97.
}
98.
USART1_printf( USART1, " \r\n ᪁ᬒ㒧ᴳ \r\n" );
99. /* ------------------- ϔ᳆㒧ᴳ --------------------*/
100.
count = 0;
101.
/* ḍ᥂ VS1003 ⱘ㽕∖ˈ೼ϔ᳆㒧ᴳৢ䳔থ䗕 2048 Ͼ 0 ᴹ⹂ֱϟ
ϔ佪ⱘℷᐌ᪁ᬒ */
102.
while ( count < 2048 )
103.
{
104.
if ( DREQ != 0 )
105.
{
106.
for ( j=0; j<32; j++ )
107.
{
108.
VS1003_WriteByte( 0 );
109.
count++;
13 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
110.
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}
}
}
count = 0;
TXDCS_SET( 1 );
/* ݇䯁 VS1003 ᭄᥂ッষ */
f_close(&fsrc);
/* ݇䯁ᠧᓔⱘ᭛ӊ */
PutChinese_strings22(10, 220, "᪁ᬒ㒧ᴳ", 0, 1);
}
}
} /* while (f_readdir(&dirs, &finfo) == FR_OK) */
} /* if (f_opendir(&dirs, path) == FR_OK) */
} /* end of MP3_Play */
1.
䖭Ͼߑ᭄ⱘҷⷕ᳝⚍䭓ˈḐᓣҷⷕ᳝⚍хˈ䞢☿᥼㤤໻ᆊ䖬ᰃ䜡ড়⑤ⷕϔ䍋ⳟˈ
⑤ⷕᇍ唤亢Ḑ䴲ᐌད^_^DŽ
⦄೼៥Ӏᴹ໻ὖߚᵤϟ MP3_Play();䖭Ͼߑ᭄ˈ䖭䞠䖍⍝ঞࠄϔѯ᭛ӊ㋏㒳᪡԰ⱘ
ߑ᭄ˈ݇Ѣ䖭䚼ߚߑ᭄ⱘ᪡԰໻ᆊৃখ㗗ࠡ䴶ⱘᬭ⿟៪㗙䯙䇏 FATFS ⱘᅬᮍ᭛ḷˈ݊
ᅲ៥ⱘᬭ⿟гϡᅠܼℷ⹂ˈ䯙䇏ᅬᮍⱘ᭛ḷᠡᰃ᳔ৃ䴴ⱘDŽ
ߑ᭄ f_mount(0, &fs);Ў៥Ӏ೼᭛ӊ㋏㒳Ё⊼‫ݠ‬ϔϾᎹ԰ऎˈᑊ߱ྟ࣪ⲬヺⱘৡЎ
0ˈⲬヺৃҹ߱ྟ࣪Ў 0~9ˈ៥Ӏ䖭䞠߱ྟ࣪Ў 0DŽ
ߑ᭄ f_opendir(&dirs,
path)
⫼ѢᠧᓔवⱘḍⳂᔩˈᑊᇚ䖭ϾḍⳂᔩ݇㘨ࠄ dirs 䖭
Ͼ㒧ᵘᣛ䩜ˈ✊ৢ៥Ӏህৃҹ䗮䖛䖭Ͼ㒧ᵘᣛ䩜ᴹ᪡԰䖭ϾⳂᔩњˈ݊ᅲ䖭Ͼ㒧ᵘᣛ
䩜ህ㉏Ԑ LINUX ϟ㋏㒳㓪⿟Ёⱘ᭛ӊᦣ䗄ヺˈϡ䆎ᰃ᪡԰䖬ᰃⳂᔩ䛑ᕫ䗮䖛᭛ӊᦣ䗄
ヺᠡ㛑᪡԰ˈᄺ䖛 LINUX ㋏㒳㓪⿟ⱘ᳟টᇍ䖭⚍㚃ᅮ䴲ᐌњ㾷DŽ
f_readdir(&dirs, &finfo)
ߑ᭄䗮䖛߮߮ⱘ dirs 㒧ᵘᣛ䩜ᴹ䇏পⳂᔩ䞠䴶ⱘֵᙃˈᑊ
ᇚⳂᔩⱘֵᙃ‫ټ‬ᄬ೼ finfo 䖭Ͼ㒧ᵘԧব䞣ЁDŽ䖭Ͼ㒧ᵘԧ೼ ff.h 䖭Ͼ༈᭛ӊЁໄᯢDŽ
᳝݇‫݋‬ԧ㒧ᵘ៤ਬⱘ԰⫼໻ᆊৃⳈ᥹䯙䇏⊼䞞DŽ
1.
2.
3.
4.
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6.
7.
8.
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10.
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/* File object structure */
typedef struct _FIL_ {
FATFS* fs;
/* Pointer to the owner file system object */
WORD
id;
/* Owner file system mount ID */
BYTE
flag;
/* File status flags */
BYTE
csect;
/* Sector address in the cluster */
DWORD
fptr;
/* File R/W pointer */
DWORD
fsize;
/* File size */
DWORD
org_clust; /* File start cluster */
DWORD
curr_clust; /* Current cluster */
DWORD
dsect;
/* Current data sector */
#if !_FS_READONLY
DWORD
dir_sect;
/* Sector containing the directory entry */
BYTE*
dir_ptr;
/* Ponter to the directory entry in the window */
#endif
#if !_FS_TINY
BYTE
buf[_MAX_SS];/* File R/W buffer */
#endif
} FIL;
14 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
㋻᥹ⴔ߸ᮁ᭛ӊⱘሲᗻˈབᵰᰃᄬḷൟ᭛ӊⱘ䆱ህᇚ᭛ӊৡᠧॄߎᴹˈ✊ৢ↨䕗
᭛ӊⱘৢ㓔ৡˈᶹⳟᰃ৺Ў䷇乥᭛ӊˈᬃᣕⱘ䷇乥Ḑᓣ᳝ mp3ǃmidǃwavǃwmaDŽ
བᵰᰃ䷇乥᭛ӊⱘ䆱߭䇗⫼ f_open(
&fsrc, finfo.fname, FA_OPEN_EXISTING |
FA_READ );ᠧᓔ䖭Ͼ䷇乥᭛ӊDŽ
೼ᠧᓔ䷇乥᭛ӊПৢˈ៥Ӏ䇗⫼ߑ᭄ Read_ID3V1()ᴹ㦋প MP3 ᭛ӊሒ䚼ⱘ ID3V1
tagˈབᵰᄬ೼ TAG ᷛㅒⱘ䆱߭೼⬉㛥ⱘ䍙㑻㒜ッ੠ LCD Ϟᰒ⼎ߎ᳆Ⳃ੠㡎ᴃᆊDŽ
Read_ID3V1()೼ mp3play.c Ёᅲ⦄˖
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/*
* ߑ᭄ৡ˖Read_ID3V1
* ᦣ䗄 ˖Ң MP3 ᭛ӊሒ䇏প ID3V1 ⱘֵᙃˈᑊᇚ䖭ѯֵᙃֱᄬ೼ϔϾܼሔ᭄㒘Ё
* 䕧ܹ ˖- FileObject: file system
*
- info: struct tag_info
* 䕧ߎ ˖᮴
* 䇈ᯢ ˖⦄೼ⱘ mp3 ෎ᴀϞ䛑≵᳝ ID3V1 tag(೼᭛ӊሒ䚼)ˈ᳝ⱘᰃ ID3V2 tag(೼᭛ӊ༈䚼)DŽ
*/
//void Read_ID3V1(FIL *FileObject, struct tag_info *info)
int Read_ID3V1(FIL *FileObject, struct tag_info *info)
{
/* ID3V1 ⱘֵᙃࣙ৿೼᭛ӊ᳿ሒⱘ 128 Ͼ byte Ё */
res = f_lseek(FileObject,FileObject->fsize - 128 );
/* ᇚ ID3V1 Ёⱘ 128 Ͼ byte ⱘֵᙃ䇏ࠄ㓧‫ކ‬ऎ */
res = f_read(FileObject, &readBuf, 128 , &n_Read);
/* ID3V1 ⱘᷛㅒ༈ᖙ乏ᰃ“TAG”ˈ৺߭䅸Ў≵᳝ᷛㅒ */
if (strncmp("TAG", (char *) readBuf, 3) == 0)
{
strncpy(info->title, (char *) readBuf + 3, MIN(30, sizeof(info->title) 1));
/* ᷛ乬 */
strncpy(info->artist,(char *) readBuf + 3 + 30, MIN(30, sizeof(info->artist) - 1));
/* ԰㗙 */
strncpy(info->album,(char *) readBuf + 3 + 30 + 30, MIN(30, sizeof(info->album) 1));
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/* ϧ䕥 */
strncpy(info->year,(char *) readBuf + 3 + 30 + 30 + 30, MIN(4, sizeof(info->year) 1));
/* ᯊ䯈 */
return TRUE;
}
else
{
return FALSE;
}
}
㽕ᛇᅠܼ䇏ព䖭Ͼߑ᭄ˈᖙ乏‫݋‬໛ϔᅮⱘ MP3 ᭛ӊḐᓣⱘⶹ䆚ˈϡ✊Դⳟњгⱑ
ⳟˈᅠܼϡⶹ᠔ҹ✊^_^DŽ
៥Ӏᇚ䇏পࠄⱘ݇Ѣ MP3 ⱘֵᙃᄬ‫ټ‬೼ id3v1 䖭Ͼ㒧ᵘԧЁˈ㒧ᵘԧॳൟ೼
mp3play.h 䖭Ͼ༈᭛ӊЁໄᯢ˖
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typedef struct tagID3V1
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{
15 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
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char Header[3];
// ᷛㅒ༈ᖙ乏ᰃ"TAG"ˈ৺߭㹿䅸Ў≵᳝ᷛㅒ༈
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char Title[30];
// ᷛ乬
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char Artist[30];
// ԰㗙
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char Album[30];
// ϧ䕥
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char Year[4];
// ߎકᑈҷ
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char Comment[28];
// ໛⊼
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char reserve;
// ֱ⬭
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char track;
// ䷇䔼
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char Genre;
// 亢Ḑ
12. }ID3V1, *pID3V1;
ᔧ៥Ӏⳟњ䖭Ͼ㒧ᵘԧⱘॳൟПৢˈ៪䆌ҷⷕজ໮ⳟពњϔѯ^_^DŽ
བᵰ MP3 ሒ䚼≵᳝ TAG ᷛㅒⱘ䆱߭Ң MP3 ⱘ༈䚼㦋প MP3 ⱘֵᙃˈे ID3V2
tagˈ䖭䞠៥Ӏ㽕ⶹ䘧া㽕ᅗᰃ MP3 ᭛ӊህϔᅮ᳝ ID3V2 tagDŽ᠔ҹ៥Ӏ೼ else Ё䇗
⫼ߑ᭄ Read_ID3V2();ߑ᭄ Read_ID3V2()ৠḋ೼ mp3play.c Ёᅲ⦄˖
1. /*
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* ߑ᭄ৡ˖Read_ID3V2
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* ᦣ䗄 ˖Ң MP3 ᭛ӊ༈䚼䇏প ID3V2 ⱘֵᙃˈᑊᇚ䖭ѯֵᙃֱᄬ೼ϔϾܼሔ᭄㒘Ё
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* 䕧ܹ ˖- FileObject: file system
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*
- info: struct tag_info
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* 䕧ߎ ˖᮴
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* 䇈ᯢ ˖MP3 ᭛ӊ䛑᳝ ID3V2ˈࣙ৿њ԰㗙ˈ᳆Ⳃˈϧ䕥ㄝֵᙃˈ䭓ᑺϡ೎ᅮˈᠽሩњ ID3V1 ⱘֵᙃ䞣DŽ
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*/
9. void Read_ID3V2(FIL *FileObject, struct tag_info *info)
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uint32_t p = 0;
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res = f_lseek(FileObject,0); /* ᅮԡࠄ᭛ӊⱘ༈䚼 */
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res = f_read(FileObject, &readBuf, READBUF_SIZE , &n_Read); /* Ң᭛ӊ༈䚼ᓔྟ䇏প
READBUF_SIZE Ͼᄫ㡖 */
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if (strncmp("ID3", (char *) readBuf, 3) == 0)
/* ID3V3 ⱘ༈䚼ᷛㅒᖙ乏Ў“ID3” */
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{
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uint32_t tag_size, frame_size, i;
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uint8_t version_major;
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int frame_header_size;
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/* ᷛㅒ໻ᇣˈࣙᣀᷛㅒ༈ⱘ 10 Ͼᄫ㡖੠᠔᳝ᷛㅒᏻⱘ໻ᇣ */
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tag_size = ((uint32_t) readBuf[6] << 21) | ((uint32_t) readBuf[7] << 14) | ((uint1
6_t) readBuf[8] << 7) | readBuf[9];
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info->data_start = tag_size;
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version_major = readBuf[3];
/* ⠜ᴀোЎ ID3V2.3 ᯊህ䆄ᔩЎ 3 */
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if (version_major >= 3)
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{
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frame_header_size = 10;
/* ID3V2.3 ⱘᷛㅒ༈Ў 10 Ͼᄫ㡖 */
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}
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else
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{
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frame_header_size = 6;
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}
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i = p = 10;
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/* iterate through frames */
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while (p < tag_size)
/* Ңᷛㅒ༈ৢᓔྟ໘⧚ */
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{
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if (version_major >= 3)
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{
16 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
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frame_size = ((uint32_t) readBuf[i + 4] << 24) | ((uint32_t) readBuf[i + 5
] << 16) | ((uint16_t) readBuf[i + 6] << 8) | readBuf[i + 7];
}
else
{
frame_size = ((uint32_t) readBuf[i + 3] << 14) | ((uint16_t) readBuf[i + 4
] << 7) | readBuf[i + 5];
}
if (i + frame_size + frame_header_size + frame_header_size >= sizeof(readBuf))
{
if (frame_size + frame_header_size > sizeof(readBuf))
{
res = f_lseek(FileObject,FileObject>fptr + p + frame_size + frame_header_size);
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res = f_read(FileObject, &readBuf, READBUF_SIZE , &n_Read);
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p += frame_size + frame_header_size;
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i = 0;
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continue;
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}
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else
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{
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int r = sizeof(readBuf) - i;
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memmove(readBuf, readBuf + i, r);
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res = f_read(FileObject, (char *) readBuf + r, i , &n_Read);
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i = 0;
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}
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}
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/* ᏻᷛ䆚"TT2"/"TIT2"㸼⼎‫ݙ‬ᆍЎ䖭佪℠ⱘ ᷛ乬 */
69.
if (strncmp("TT2", (char *) readBuf + i, 3) == 0 || strncmp("TIT2", (char *) r
eadBuf + i, 4) == 0)
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{
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strncpy(info>title, (char *) readBuf + i + frame_header_size + 1, MIN(frame_size - 1, sizeof(info>title) - 1));
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if( ( info->title[0] == 0xFE && info->title[1] == 0xFF ) || ( info>title[0] == 0xFF && info->title[1] == 0xFE ) )
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{
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/* unicode Ḑᓣ*/
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memset(info->title,0,sizeof(info->title));
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printf( "-- MP3 title no support unicode \r\n");
77.
}
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}
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/* ᏻᷛ䆚"TP1"/"TPE1"㸼⼎‫ݙ‬ᆍЎ䖭佪℠ⱘ ԰㗙 */
81.
else if (strncmp("TP1", (char *) readBuf + i, 3) == 0 || strncmp("TPE1", (char
*) readBuf + i, 4) == 0)
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{
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strncpy(info>artist, (char *) readBuf + i + frame_header_size + 1, MIN(frame_size - 1, sizeof(info>artist) - 1));
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if( ( info->artist[0] == 0xFE && info->artist[1] == 0xFF ) || ( info>artist[0] == 0xFF && info->artist[1] == 0xFE ) )
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{
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/* unicode Ḑᓣ*/
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memset(info->artist,0,sizeof(info->artist));
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printf( "-- MP3 artist no support unicode \r\n");
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}
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}
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p += frame_size + frame_header_size;
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i += frame_size + frame_header_size;
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}
96.
}
97. }
-----------------------------------------------------------------------------------------------㽕ᛇ䇏ព䖭Ͼߑ᭄ˈ៥Ӏজ㽕ᴹϔ⃵ MP3 ⶹ䆚ⱘᠿⳆњ^_^ĂĂ
ID3V2 ࠄ⦄೼ϔ᳝݅ 4 Ͼ⠜ᴀˈԚ⌕㸠ⱘ᪁ᬒ䕃ӊϔ㠀াᬃᣕ㄀ϝ⠜ᴀˈे
ID3V2.3DŽ⬅Ѣ ID3V1 䆄ᔩ೼᭛ӊሒ䚼њˈᬙ ID3V2 ህা㛑䆄ᔩ೼༈䚼њˈгℷᰃ䖭
Ͼॳ಴ˈᇍ ID3V2 ⱘ᪡԰㽕↨ ID3V1 ᜶ˈ䖭гᰃ៥Ӏ೼⿟ᑣЁ‫ܜ‬Ẕ⌟ ID3V1 ⱘॳ಴ˈ
17 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
া㽕៥ӀẔ⌟ࠄ ID3V1 ህϡ⫼এẔ⌟ ID3V2 њˈ‫މ‬ϨẔ⌟ ID3V2 ⱘҷⷕᅲ⦄㽕໡ᴖᕫ
໮DŽ㗠Ϩ ID3V2 㒧ᵘ↨ ID3V1 㒧ᵘ㽕໡ᴖᕜ໮ˈԚ↨ ID3V1 ܼ䴶ϨৃҹԌ㓽੠ᠽሩDŽ
↣Ͼ ID3V2.3 ⱘᷛㅒ䛑᳝ϔϾᷛㅒ༈੠㢹ᑆϾᷛㅒᏻ៪ϔϾᠽሩᷛㅒ༈㒘៤DŽ݇
Ѣ᳆Ⳃⱘֵᙃབᷛ乬ǃ԰㗙ㄝֵᙃ䛑ᄬᬒ೼ϡৠⱘᷛㅒᏻЁˈᠽሩᷛㅒ༈੠ᷛㅒᏻᑊ
ϡᰃᖙ㽕ⱘˈԚ↣Ͼᷛㅒ㟇ᇥ᳝ϔϾᷛㅒᏻDŽᷛㅒ༈੠ᷛㅒᏻϔ䍋ᄬᬒ೼ MP3 ᭛ӊⱘ
佪䚼DŽ
z ᷛㅒ༈
೼᭛ӊⱘ佪䚼乎ᑣ䆄ᔩ 10 Ͼᄫ㡖ⱘ ID3V2.3 ⱘ༈䚼ˈ᭄᥂㒧ᵘབϟ˖
1.
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cha Header[3];
char Ver
char Revision
char Flag
char Size[4]
// ᖙ乏Ў“ID3”ˈ৺߭䅸Ўᷛㅒϡᄬ೼
// ⠜ᴀোЎ ID3V2.3 ህ䆄ᔩЎ 3
// ࡃ⠜ᴀোℸ⠜ᴀ䆄ᔩЎ 0
// ᄬᬒᷛᖫⱘᄫ㡖ˈ䖭Ͼ⠜ᴀাᅮНњϝԡ
// ᷛㅒ໻ᇣˈࣙᣀᷛㅒ༈ⱘ 1 Ͼᄫ㡖੠᠔᳝ⱘᷛㅒᏻⱘ໻ᇣ
ᷛㅒ໻ᇣⱘ䅵ㅫ˖
ϔ݅ಯϾᄫ㡖ˈԚ↣Ͼᄫ㡖া⫼ 7 ԡˈ᳔催ԡᘦЎ 0ˈḐᓣབϟ˖
0xxxxxxx, 0xxxxxxx, 0xxxxxxx, 0xxxxxxx
䅵ㅫⱘᯊ‫׭‬㽕ᇚ 0 এᥝˈᕫࠄϔϾ 28 ԡⱘѠ䖯ࠊ᭄ˈህᰃᷛㅒ໻ᇣˈ
䅵ㅫ݀ᓣབϟ˖
1.
2.
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4.
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int total_size;
total_size = (Size[0]&0x7f) << 21
+(Size[1]&0x7f) << 14
+(Size[3]&0x7f) << 7
+(Size[4]&0x7f);
ⳟࠄ䖭ᇍҷⷕⱘᅲ⦄ᰃϡᰃ᳝⚍ᛳ㾝њਔˈ߿ᗹˈϟ䴶៥Ӏ㒻㓁ᴹᢼᓔ䙷ሖሖ䗋
䳒^_^ĂĂ
z ᏻᷛ䆚
⫼ಯϾᄫヺᷛ䆚ϔϾᏻˈ䇈ᯢϔϾᏻⱘ‫ݙ‬ᆍ৿Нˈᐌ⫼ⱘᇍ✻བϟ˖
TIT2˖ᷛ乬ˈ㸼⼎‫ݙ‬ᆍЎ䖭佪℠ⱘᷛ乬
TPE1˖԰㗙
TALB˖ϧ䕥
18 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
TRCK˖䷇䔼(Ḑᓣ˖N/Mˈ݊Ё N Ўϧ䕥Ёⱘ㄀ N 佪ˈM Ўϧ䕥Ё݅ M 佪ˈN ੠
M Ў ASCII ⷕ㸼⼎ⱘ᭄ᄫ)
TYPE˖ᑈҷ
ᰃ ASCII ⷕ㸼⼎ⱘ᭄ᄫ
TCON˖㉏ൟ Ⳉ᥹⫼ᄫヺІ㸼⼎
COMM˖໛⊼ Ḑᓣ˖Āeng\0 ໛⊼‫ݙ‬ᆍāˈ݊Ё eng 㸼⼎໛⊼᠔Փ⫼ⱘ㞾✊䇁㿔
Ԛ㽕⊼ᛣˈ䖭䞠䴶᳝ѯᏻᷛ䆚 ID3V2 䞠䴶ᰃ≵᳝ⱘˈԚᷛ乬੠԰㗙ϔ㠀䛑Ӯ᳝DŽ
㽕ᛇⶹ䘧 ID3V2 ᰃ৺ࣙ৿᳝䖭ѯֵᙃˈ៥Ӏৃҹ⫼ 16 䖯ࠊⱘ㓪䕥఼ᴹᶹⳟ MP3 ᭛
ӊˈID3V2 ೼༈䚼ˈID3V1 ೼ሒ䚼DŽ㗗㰥ࠄ໻ᆊৃ㛑≵᳝⫼䖛 16 䖯ࠊⱘ㓪䕥఼ˈ᠔ҹ
䞢☿೼‫Ⲭܝ‬䌘᭭ljᐌ⫼ҷⷕ㓪䕥䕃ӊNJ䖭Ͼ᭛ӊ།ϟᦤկњ Uedit32 䖭Ͼ 16 䖯ࠊ㓪䕥
఼ˈ䖭Ͼ㓪䕥఼䖬ৃҹ䯙䇏 c/c++ҷⷕˈࡳ㛑䴲ᐌᔎ໻DŽ
z ᏻ໻ᇣⱘ䅵ㅫ
䖭Ͼৃ≵᳝ᷛㅒ༈ⱘㅫ⊩䙷М咏⚺ˈ↣Ͼᄫ㡖ⱘ 8 ԡܼ⫼ˈḐᓣབϟ˖
xxxxxxxx, xxxxxxxx, xxxxxxxx, xxxxxxxx
ҷⷕབϟ˖
1.
2.
3.
4.
5.
int FSize;
FSize = Size[0] * 0x100000000
+Size[1] * 0x10000
+Size[2] * 0x100
+Size[3];
-----------------------------------------------------------------------------------------------䆆ࠄ䖭䞠ˈRead_ID3V2()ߑ᭄䞠䴶ⱘҷⷕ໻ӭгᑨ䆹⧚㾷ⱘᏂϡ໮њ^_^DŽϟ䴶៥
Ӏ‫ݡ᥹ݡ‬ढ़ˈ䍕ⴔ࢓༈ᡞৢ䴶ⱘҷⷕгϔষ⇨䇏ᅠ৻DŽ
TXDCS_SET( 0 );
⫼Ѣ䗝ᢽ vs1003 ⱘ᭄᥂ッষˈ‫ޚ‬໛ᕔ vs1003 Ё䕧᭄ܹ᥂DŽ݊Ё
TXDCS_SET( 0 );ᰃ೼
1.
#define XDCS
vs1003.h Ёᅲ⦄ⱘϔϾᅣ˖
(1<<6)
// PC6-XDCS
2.
3.
#define TXDCS_SET(x)
GPIOC->ODR=(GPIOC->ODR&~XDCS)|(x ? XDCS:0)
19 / 22
䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
㋻᥹ⴔ䖯ܹϔϾ໻ᕾ⦃Ё᪁ᬒ៥Ӏⱘ mp3 ᭛ӊDŽ
ߑ᭄ f_read(
&fsrc, buffer, sizeof(buffer), &br );Ң᭛ӊЁ䇏প
512 Ͼᄫ㡖ⱘ᭄
᥂ࠄ㓧‫ކ‬ऎЁˈ㟇ѢЎҔМᰃ 512 Ͼᄫ㡖ˈ㗠ϡᰃ 1024 ៪㗙᳈໮ˈ䖭ᰃ಴Ўवⱘϔ
Ͼ sector ᰃ 512 Ͼᄫ㡖ˈϔ⃵া㛑䇏পϔϾ sectorDŽ
ߑ᭄ VS1003_WriteByte(
buffer[count] );ᇚ㓧‫ކ‬ऎЁⱘ᭄᥂‫ܹݭ‬
vs1003 ⱘ᭄᥂㓧‫ކ‬
ऎDŽ⊼ᛣˈ䖭䞠ϔ⃵া㛑‫ ܹݭ‬32 Ͼᄫ㡖ˈ䖭ᰃ಴Ў vs1003 ⱘ FIFO ⱘ໻ᇣЎ 32 Ͼᄫ
㡖ˈ‫ݭ‬໮њ᮴ᬜDŽ
ᔧ᭛ӊߎ䫭៪㗙ϔ᳆᪁ᬒᅠ↩ᯊህ䏇ߎ for ᕾ⦃ˈᑊᠧॄߎĀ᪁ᬒ㒧ᴳāⱘ䇗䆩
ֵᙃDŽ
ḍ᥂ VS1003 ⱘ㽕∖ˈ೼ϔ᳆㒧ᴳৢ䳔থ䗕 2048 Ͼ 0 ᴹ⹂ֱϟϔ佪ⱘℷᐌ᪁ᬒDŽ
ϔ᳆᪁ᬒᅠ↩៥Ӏ݇䯁 vs1003 ⱘ᭄᥂ッˈ݇䯁ᠧᓔⱘ᭛ӊˈㄝᕙϟϔ᳆ⱘ᪁ᬒˈ
ⳈࠄⳂᔩϟⱘ䷇乥᭛ӊ᪁ᬒᅠЎℶDŽ䖬᱖ϡᬃᣕᕾ⦃᪁ᬒⱘࡳ㛑DŽ
䖭䞠䴶⍝ঞࠄњ vs1003 ᪡԰ⱘϔѯ⡍ᗻˈ䳔໻ᆊখ㗗 vs1003 ⱘ datasheet ᴹᐂ
ࡽ⧚㾷ˈ䞢☿ᓎ䆂໻ᆊҨҨ㒚㒚ഄ䯙䇏ˈϡ㽕಴Ў䲒ᑺ៪㗙ᰃ㐕⧤㗠䗔㓽ˈ㽕ⶹ䘧԰
ЎϔϾጠܹᓣ䕃ӊᓔথᎹ⿟Ꮬˈ䯙䇏 ic datasheet˄Ё᭛/㣅᭛˅ᰃϔ⾡ᖙ໛ⱘᡔ㛑DŽ
ᅲ偠⦄䈵->
ᇚ䞢☿ STM32 ᓔথᵓկ⬉(DC5V)ˈᦦϞ JLINKˈᦦϞІষ㒓(ϸ༈䛑ᰃ↡ⱘѸঝ
㒓)ˈᦦϞ MicroSD व( ៥⫼ⱘᰃ 1G )ˈ೼वⱘḍⳂᔩϟ㽕᳝ mp3 ᭛ӊˈ᭛ӊৡ㽕ᰃ㣅
᭛ˈ᱖ϡᬃᣕЁ᭛੠䭓᭛ӊৡˈᠧᓔ䍙㑻㒜ッˈ䜡㕂䍙㑻㒜ッЎ 115200 8-N-1ˈᇚ㓪
䆥དⱘ⿟ᑣϟ䕑ࠄᓔথᵓˈेৃⳟࠄ䍙㑻㒜ッᠧॄߎབϟֵᙃ˄೼ LCD 䞠䴶ⱘᬜᵰ೒
䖭䞠ህ≵᳝ᢡ✻њˈ໻ᆊ㾕䇙^_^˅˖
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䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
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䞢☿ stm32 ᓔথᵓ⎬ᅱᅬᮍϧप˖http://firestm32.taobao.com
䖭ϸᓴᰃ LCD 䞠䴶ᰒ⼎ⱘֵᙃˈϡ䖛೼⌟䆩ᯊ䞢☿ᤶњ佪℠᳆^_^DŽ
៥ⱘवⱘḍⳂᔩϟᬒњ 3 Ͼ mp3 ᭛ӊˈ䛑ᰃ Eason ⱘ℠(಴ЎϾҎ䴲ᐌ୰⃶䰜༩
䖙ⱘ℠^_^)ˈߚ߿ᰃ䘹䖰ⱘཌྷ(yydt.mp3)ǃϔϱϡᣖ(ysbg.mp3)ǃ乘ᛳ
(yugan.mp3)DŽᦦϞ㘇ᴎˈ䷇䋼෾↨⬉㛥ˈ䷇䞣ৃ䗮䖛㘇ᴎᴹ䇗ˈࠡᦤᰃԴⱘ㘇ᴎ㽕㛑
䇗㡖䷇䞣ᠡ㸠DŽ
ᅲ偠䆆㾷ᅠ↩ˈ䞢☿⼱໻ᆊᄺдᛝᖿ^_^DŽ
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