Anyone using the STM32C to read a USB flash Drive?

[tomabcd9]

Posted on November 07, 2009 at 10:58

Anyone using the STM32C to read a USB flash Drive?

[tomabcd9]

Posted on May 17, 2011 at 13:28

Looking at the Docs it appears the STM32C can but used as USB host

so is there example software so the STM32C can connect to a USB flash drive? If so how much code/ram space does it take? What file systems does it support? Are there any licensing issues? If this is all documented somewhere please just point me to it. Thanks Tom

[tomas23]

Posted on May 17, 2011 at 13:28

Hi Tom,

there are few vendors that provide USB host stack for STM32, we have real experience with Micrium (works), but is not cheap. Nothing free, so far.

[sheldon]

Posted on May 17, 2011 at 13:28

I'm looking to do something similar. Chan's FAT (http://elm-chan.org/fsw/ff/00index_e.html) can be used for the file system, but then I need to implement the disk I/O functions:

• http://elm-chan.org/fsw/ff/en/dinit.html

  - Initialize disk drive

• http://elm-chan.org/fsw/ff/en/dstat.html

  - Get disk status

• http://elm-chan.org/fsw/ff/en/dread.html

  - Read sector(s)

• http://elm-chan.org/fsw/ff/en/dwrite.html

  - Write sector(s)

• http://elm-chan.org/fsw/ff/en/dioctl.html

  - Control device dependent feature

I wasn't impressed with the USB-OTG driver being mostly binary form so I couldn't get more help with it. However, I did see that Keil has a stm32_usbmem.zip file that seems to demo USB host for the STM32 (if you use Keil) Has anyone else tried to do something similar with any success?

[Palitsky.Gennady]

Posted on May 17, 2011 at 13:28

I couldn't locate the file stm32_usbmem anywhere in Keil directories.

Could you please point me at the location. Did you have any success with implementing usb drive interface ? thanks a lot, Gennady