stm3210E_EVAL: USB, SDcard, NAND Flash

[mahmoud_dhaiwi]

Posted on May 15, 2015 at 16:08

Hello, 

I use the stm3210e_eval board.

I copmpiled the STM3210E-EVAL_FW_V2.1.0 using the IDE Coocox. everything is Ok.

but I have a problem at the level of USB, SDcard and the NAND Flash.

In fact, the STM3210E_EVAL support two logical unit number: the SDcard and the NAND flash.

I want delete the NAND and keep only the SDcard.

So I change uint32_t Max_Lun = 1; to uint32_t Max_Lun = 0; in 

usb_prop.c

but Windows don't detect the usb connection anymore !

I don't understand what !! any helps please ?

feel free to ask me more questions if I wasn't clear in the description of my problem.

thanks

#usb #sdcard #stm3210e_eval

[Tesla DeLorean]

Posted on May 15, 2015 at 19:18

You'll need to wade through the MSC code.

The number of LUNs is reported via USB descriptors as I recall, and one of the SCSI commands. Each SCSI command has a LUN field and you'll have to check how they decode that and apply it.

You could look at some of the other USB library implementation, I've done a single SDCARD implementation, and an STM32F429I-DISCO SDRAM-DISK one.