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saimaddy123
saimaddy123
Associate III
March 16, 2011
Question

STM32_USB:Interrupt Storm when sending data through virtual COM port..

  • March 16, 2011
  • 4 replies
  • 690 views
Posted on March 16, 2011 at 11:13

STM32_USB:Interrupt Storm when sending data through virtual COM port..

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    4 replies

    saimaddy123
    saimaddy123Author
    Associate III
    May 17, 2011
    Posted on May 17, 2011 at 14:28

    Can any one help me on this one? I am not having a clue on what is happening as it is difficult to debug USB transactions..

    Thanks in advance,

    Sai

    saimaddy123
    saimaddy123Author
    Associate III
    May 17, 2011
    Posted on May 17, 2011 at 14:28

    I could have it working.. Posted the code here... Let me know if you guys find any problems with it...

    https://my.st.com/public/STe2ecommunities/mcu/Lists/ARM%20CortexM3%20STM32/Flat.aspx?RootFolder=https://my.st.com/public/STe2ecommunities/mcu/Lists/ARM CortexM3 STM32/stdio over USB serial in STM32-H107&FolderCTID=0x01200200770978C69A1141439FE559EB459D758000626BE2B829C32145B9EB5739142DC17E&currentviews=87

    saimaddy123
    saimaddy123Author
    Associate III
    May 17, 2011
    Posted on May 17, 2011 at 14:28

    My understanding is that the STM32 usb stack clears the interrupt mask as soon as it is processed. But i am getting a continuous interrupts...

    domen23
    domen23
    Associate II
    May 17, 2011
    Posted on May 17, 2011 at 14:28

    I assume you get an interrupt acknowledging data you sent was sent on usb. I don't know how you handle it, though, nor am I familiar with stm32 usb stack.

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