Search found 1984 matches

by pasi
Sun 2010-11-28 15:32
Forum: Microcontroller Software
Topic: mp3 stream problems
Replies: 7
Views: 7629

Re: mp3 stream problems

1. receive stream from network and place each byte on a 1024 element array. 2. transfer array to VS1053 always observing DREQ and waiting if need be. the DREQ line is always high There are two things you should probably take into account. You probably need to send data to vs1053 more often, and bec...
by pasi
Sat 2010-11-27 21:06
Forum: Stand-Alone Applications
Topic: Q:Problem about using vs1003b
Replies: 3
Views: 2780

Re: Q:Problem about using vs1003b

jasonzou wrote:Set vs1003b cs pin as 3.3v, set rst pin as 0v.
The xreset pin is active low, and the crystal oscillator is powered down during reset, so that is why you don't see clock.

Bring xreset high and check if you see clock then. Then see if RCAP, GBUF, LEFT, and RIGHT rise to about 1.2V.
by pasi
Fri 2010-11-19 23:00
Forum: System Software
Topic: VS1000 - Writing to NAND
Replies: 3
Views: 2970

Re: VS1000 - Writing to NAND

booting from MLC NAND. We would like to occationally write data to the NAND flash chip such as bookmark information I assume you use the mlcplayer example code. The best way is to reserve one erase block for your own stuff. Reduce ph->eraseBlocks by one before initializing mapper (see nandfirmware ...
by pasi
Fri 2010-11-19 22:46
Forum: Microcontroller Software
Topic: problem 16bit pcm 48khz sample rate speed?
Replies: 14
Views: 9152

Re: problem 16bit pcm 48khz sample rate speed?

16BIT PCM 48KHZ Recorder test. Because you need to read the data through SCI, which requires 32-bit transfers to read one 16-bit word, for 48000Hz 16-bit mono recording you need 48000Hz*32bit/word = 1.536Mbit/sec transfer speed for the data alone. In addition you need to read the fill value and sav...
by pasi
Mon 2010-11-15 14:50
Forum: System Software
Topic: Updating VS1000 Audio Module v0.2 to v0.3
Replies: 2
Views: 2788

Re: Updating VS1000 Audio Module v0.2 to v0.3

Do you use another version of compiler or compile spiall.spi in Linux/Mac environment? Dear Sergio, Yes, we are working with multiple systems, FreeBSD, Linux and Windows, depending on project and developer. But we are also moving towards VSIDE. As it was long overdue, we have made a new release of ...
by pasi
Wed 2010-11-10 21:08
Forum: Microcontroller Software
Topic: Real time MIDI & VS1053 (solved)
Replies: 15
Views: 12209

Re: Real time MIDI & VS1053

I have a problem for playing "big" midi files (>2 kB). Check your DREQ handling. When DREQ is high, you can send 32 bytes to SDI. Then check DREQ again. If it is low, wait until DREQ is high again. The stream buffer in VS10xx is 2046 bytes, so files of this size and less fit completely in...
by pasi
Wed 2010-11-10 18:28
Forum: System Software
Topic: Updating VS1000 Audio Module v0.2 to v0.3
Replies: 2
Views: 2788

Updating VS1000 Audio Module v0.2 to v0.3

We received the samples of the VS1000C module. Where can we found the SPI commands formats to play audio files from the sd card? The default firmware has UART control, because it boots and plays from SPI FLASH. The UART commands are listed in the VS1000 audio module datasheet you can download from ...
by pasi
Wed 2010-11-10 18:16
Forum: System Software
Topic: audiomodule03.zip common.o missing
Replies: 3
Views: 2810

Re: audiomodule03.zip common.o missing

The version of combineimg.exe included in the audiomodule03.zip is not able to recognize the option: "-m". I have modified the Makefile using the option: "-s" and it seems ok. Using -s is fine. The -m option has been added later to make the image as large as needed and not the m...
by pasi
Mon 2010-11-08 11:02
Forum: System Software
Topic: audiomodule03.zip common.o missing
Replies: 3
Views: 2810

Re: audiomodule03.zip common.o missing

make: *** No rule to make target `common.o', needed by `usbmass.bin'. Stop. The file: "common.o" is missing in the zip file nor the source file is available. Hi, common.o is created from common.abs, but seems to missing from the package. I will update the package. common.abs: #Note: 0x1f9...
by pasi
Sun 2010-10-31 16:48
Forum: Microcontroller Software
Topic: Real time MIDI & VS1053 (solved)
Replies: 15
Views: 12209

Re: Real time MIDI & VS1053

The problem is when I want to read the endfill BYTE the result is 0x0000. How can I know if the problem is in my software or due to the TEST thing? 0 is a valid value for endfill byte for most codecs. If you have TEST (or actually xTEST) floating or low, at least DREQ is not functioning correctly. ...