USB mass storage in RAM

[brakchus]

Posted on September 01, 2013 at 14:05

Dear All,

I'm working on use RAM memory from STM32F205 on mz custom PCB to run code from STM32_USB-Host-Device_Lib_V2.1.0 under Iar workbench. From mass storage device example workspace I removed all board specific calls lik LCD logger and SD card and changed them to write/read from my uin8_t usbDisk[0x1000] buffer placed in RAM. I can see that device is connected in device manager Win7 without any yellow marks, but when the OS wants to format removable device I got ''Windows was unable to complete the format''. I can see that some SCSI commands are invoked like: SCSI_INQUIRY, SCSI_READ_FORMAT_CAPACITIES, SCSI_READ10, SCSI_MODE_SENSE6 and after device is detected in OS SCSI_TEST_UNIT_READY command is regular called. You can see my changes in usbd_storage_msd.c file attached. Best regards, John #stm32f2-usb-mass-storage

[roman239955]

Posted on June 08, 2018 at 16:09

I did not find a MSC SDRAM-DISK example for the STM32F429I-DISCO from 2015 anywhere.

Roman Marjamaa

Marjamaa Engineering Inc.

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Mound, MN 55364

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[Tesla DeLorean]

Posted on June 08, 2018 at 18:23

https://community.st.com/0D50X00009XkgpRSAR

[roman239955]

Posted on June 08, 2018 at 18:55

Thanks,

Roman Marjamaa

Marjamaa Engineering Inc.

395 Co Rd 110 N

Mound, MN 55364

Direct: (612) 999-8263

Mobile: (612) 345-1492

Fax: (855) 627-5364

www.marjamaaengineering.com<http://www.marjamaaengineering.com/>;

All information contained in this email is to be treated as “confidential�? or “proprietary�? and shall not be shared

outside the terms of the Agreement between Marjamaa Engineering Inc. and the Recipients of this email.

[feuerwolf]

Hallo Clieve 2.0,

could you please repost this link to your example? Its broken again...

thanks a lot

[Tesla DeLorean]

Please have @brk​ dig it out of the archive of broken forums past..

It would have been F4 SPL code from 5 or more years ago.

[Brian Kling]

Here it is: https://community.st.com/s/question/0D50X00009XkgpRSAR/using-stm32f429idiscovery-as-usb-otg-msc

[Alihussain Vohra]

@Community member​ I am using stm32f072rb discovery board... and I allocated 10 and tried also with 11kb ... It is showing 11kb in windows but error comes that widows is unable to format disk.. can you help me?