MP3 Player 1.01

how to use the code Please, log you to post a reply.

#1 2010-02-27 08:49:10
prajwal New member Offline	how to use this application on stm32 primer2?

#2 2010-02-27 09:35:14
ntrf.zns Member Offline	First you need to install software (Ride IDE and ARM Toolkit). If you want to intall MP3Player to the Primer2, go to the Lib_XXX_add_to_circle subfolder and launch the add_to_circle.bat file. Make sure you connected (using Debug port - you will see red ligt near joystick) and turned on your device.

#3 2010-07-05 13:55:22
ankita madan New member Offline	Hello, After connecting a USB cable to DEBUG, I see the LED near the joystick glow for a second and then it turns off. Now, I switch the Primer ON. And I launch the BAT file as suggested as below. It shows the following: Connecting to RLink... OK Connecing to target... Error 303 : Unable to read Id code..." any suggestion? Rgds, Ankita

#4 2010-07-06 10:50:57
yrt Administrator Offline	The Led behavior is normal at USB connection (it indicates the busy state of the embedded RLink). Did you try to restore the factory firmware, or debuging under Ride environment ?

怎么下载不了？ Please, log you to post a reply.

#1 2010-06-27 15:37:58
xzw168 New member Offline	MP3播放器- 1.01.zip 不能下载

#2 2010-06-28 11:00:30
repzak Member Offline	Seems to work here, did you login?

it works Please, log you to post a reply.

#1 2010-04-25 07:54:22
prajwalc New member Offline	@ntrf.zns thanks mate

#2 2010-04-25 10:13:02
ntrf.zns Member Offline	Huh? What did i do?

SD-Card Bug Please, log you to post a reply.

#1 2009-10-13 19:04:58
repzak Member Offline	Hello All, This thread describes the lock-up of the MP3 Player as well. http://www.st.com/mcu/forums-cat-8216-23.html Kasper

cool! Please, log you to post a reply.

#1 2009-09-03 03:52:06
dragonathust1 New member Offline	How about sthe sound quanlity?

#2 2009-09-03 07:49:01

repzak
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Hello,

If you use the line output i think the sound quality is quite good and can be compared to other "low" cost MP3 player.

The internal speaker can practically not be used to play music, and you can not judge the quality from that.

The hardware has a dedicated audio dac, almost like your soundcard in the PC and this codec will set the quality since every thing is digital until this DAC, you can read the datashet for this chip.

There can be some problems in playing 320kbit MP3's due to the speed of the uC or the optimization of the code.

Kasper

AWESOME Please, log you to post a reply.

#1 2009-07-19 05:57:30
ShadowPhoenix Member Offline	Very cool! I will take a look at the source soon. Only thing - the music ONLY playes on the output jack. Why not the internal speaker?

#2 2009-07-19 11:39:36
repzak Member Offline	Hey, I am glad you like it You can enable it in the source code, Set this code line in apllication_ini function to ON : /* Turns off Speaker */ AUDIO_SPEAKER_OnOff(OFF); I thought about add it as an option on the screen, but the sound quality in the internal loudspeaker is poor, and will not show the quality of sound both the codec and the MP3 player can deliver Kasper

#3 2009-07-19 19:33:44
ShadowPhoenix Member Offline	Now add a option to play all files in the folder . Make a percentage of the file read. Support some uncommon frequencies - 11025 for example. Out of curiosity, how much CPU is used up?

#4 2009-07-19 23:14:05
repzak Member Offline	First i need to take my summer holiday , then we have to see in the winther..., but others can also add functionality. The CPU power at 320kbit will i estimate to 90-105%.... Maybe some optimization can also be done, DMA transfer... also the DMA transfer in SD card read can be optimized. Kasper

#5 2009-07-20 03:16:54

ShadowPhoenix
Member

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repzak wrote:
First i need to take my summer holiday , then we have to see in the winther..., but others can also add functionality.

The CPU power at 320kbit will i estimate to 90-105%....
Maybe some optimization can also be done, DMA transfer... also the SMA transfer in SD card read can be optimized.

Kasper

Summer holiday? This SHOULD be your holiday!

I mean, look at all of us... it's summer and we are hard at school coding programs.

And wow,. 90% is pretty tough. How about 120kbit?

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