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RL-ARM: OS_ERR_FIFO_OVF in the RTX HID example with MDK 4.50

Michael O.

I am using the Keil SAM3U-EK with MDK 4.50 and Ulink Pro.
The RTX HID example (Keil\ARM\Boards\Atmel\SAM3U-EK\RL\USB\Device\RTX\HID) from MDK 4.20 work perfectly but the RTX HID example from MDK 4.50/4.53 ends in an OS_ERR_FIFO_OVF error when I connect the USB.
Does somebody use RTX and HID with the new libraries (4.50/4.53)? Or knows the reason for this fifo overflow? Is this a bug in the library/RTX?

Thanks in advance,
Michael

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    I have the same problem on another target (STM32F103).

    If I include the USB library and initialize it in my application, the application either reboots or end up in the os_error(OS_ERR_FIFO_OVF) function.

    Did you find a explanation or solution to this problem?