Any body ever succeeded writing Multiple blocks to SD/MMC using C5509A?

Daniel D

Hi all,

I built a custom board with 5509A. Everythig works like a charm, cxcept writing to my SD card at MMC/SD controller (device 1)

I want the write routines to work, because I want my board to to appear as a mass storage device on Windows.

The single block write hangs for ever for large data transfer and all my attempts to use multiple block write damaged my cards!

Please, please please somebody help me...or tell me there is a problem in the Silicon!

I appreciate your concern in advance

0 Daniel D over 14 years ago

It's me back ...Seems I'm alone here

But finally and fortunately I made it to work...I just copied a 480MB file to my SD card in 12 minuits, a very good speed for a full speed

USB device port of C5509A. I'm the happiest man on the planet right now!! ..I'm ready to share my code if anyone wants...

0 Marco Casaroli over 13 years ago in reply to Daniel D

Hello Daniel,

Could you please share your code for 5509 to read a SD card as a USB mass storage device under windows?

Thank you.

0 qiao qiaoqingyang over 13 years ago in reply to Daniel D

Hello Daniel,

could you share your codes with me ?I'm working on it now,and feel so confused.Thank you!My e-mail：qiaoqingyang@yahoo.com.cn

0 Ha Phung Van over 11 years ago in reply to Daniel D

Dear Daniel D,

Now we are developing the SD write/read functions on C5509A. So can you send me your source code for this? My email: ha.phungvan@allyparkgroup.com

Thanks,

Phung Van Ha

0 howy over 11 years ago

I am also planning a project that uses the SD/MMC port of the 5509a.

I would love to see your code if its not too much trouble.

Thanks!!!!!

-howy

howard@zaxcom.com

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