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Forum: ARM programming with GCC/GNU tools STR7 USB MassStorageDevice example


Author: Michael Fischer (mifi)
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Hello,

a STR7 USB MassStorageExample for GCC can be found here:

http://www.yagarto.de/projects/str7usbmsd/index.html

The original STR7 USB MassStorageDevice (MSD) example can be
found at the STMicroelectronics page.

I have used this example only in the external RAM, but it should
worked in ROM without the memory extension too.
In this case, you have only 32KB of RAM.

Best regards,

Michael

Author: Tamir (Guest)
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Michael Fischer wrote:
> Hello,
>
> a STR7 USB MassStorageExample for GCC can be found here:
>
> http://www.yagarto.de/projects/str7usbmsd/index.html
>
> The original STR7 USB MassStorageDevice (MSD) example can be
> found at the STMicroelectronics page.
>
> I have used this example only in the external RAM, but it should
> worked in ROM without the memory extension too.
> In this case, you have only 32KB of RAM.
>
> Best regards,
>
> Michael

Hi Michael,
I was wondering whether you could help me with this particular example -
I attempted to run it on my STR710FZ2, but I never get interrupted by
the bus!
I am attempting to use the original MSD example without any
modifications.
Some people suggested that my clock is not configured correctly?
Thanks in advance

Author: Michael Fischer (mifi)
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Hello Tamir,

what kind of board you are using, a selfmade one?

Do you have added a 48MHz clock for USB?

Regards,

Michael

Author: Spencer Oliver (ntfreak)
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Michael Fischer wrote:
> Hello Tamir,
>
> what kind of board you are using, a selfmade one?
>
> Do you have added a 48MHz clock for USB?
>
> Regards,
>
> Michael


You can use either a external 48MHz or what a lot of people do is run
the everything @ 4MHz and use the HDLC PLL2 to generate the 48MHz for
the usb cell.

Regards
Spen

Author: Robin Singh (singh_robin28)
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Michael Fischer wrote:
> Hello,
>
> a STR7 USB MassStorageExample for GCC can be found here:
>
> http://www.yagarto.de/projects/str7usbmsd/index.html
>
> The original STR7 USB MassStorageDevice (MSD) example can be
> found at the STMicroelectronics page.
>
> I have used this example only in the external RAM, but it should
> worked in ROM without the memory extension too.
> In this case, you have only 32KB of RAM.
>
> Best regards,
>
> Michael

hello friends

i am porting FreeRTOS on STR710 can u help me

robin

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