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sjayapal
Visitor II
May 15, 2006
Question

Port Configuration

  • May 15, 2006
  • 2 replies
  • 860 views
Posted on May 15, 2006 at 19:09

Port Configuration

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    2 replies

    S
    sjayapalAuthor
    Visitor II
    May 2, 2006
    Posted on May 02, 2006 at 04:12

    Micro Used: ST7FL35

    Tool Used: DVP3

    Compiler: Cosmic

    Not able to configure PA5 (HS)/ATPWM3/ICCDATA and PA6/MCO/ICCCLK/BREAK. If written it causes a reset while ICD.It works fine with the default configuration of PADDR = 0x00 and PAOR = 0x40. If i change the configuration to PADDR = 0x40(or 0x60) and PAOR = 0x00. When in ICD mode it resets. I would like to configure PA5 has output pin in my application. When in ICD mode i am taking care as to not use this pin in my application.As i understand from the data sheets to just configure it has output i feel it should not cause a problem.

    Kindly let me know as to what is going wrong?

    Regards,

    Suganya

    I
    info45
    Visitor II
    May 15, 2006
    Posted on May 15, 2006 at 19:09

    Hy Suganya,

    humm....from data sheet You can set Pa5 and Pa6 in otuput mode, but follow the I/O port sequence configuration! PADDR 0x40 and Paor 0x00 means open drain configuration, then need a pullup resistor!

    For your throuble, are You sure that your HW don't produce strangerous effects?

    I think that is better isolate this pins from your HW and follow step by step ( register load) the micro situation.

    Other, I see that this pinst are connect in input to external interrupt logic...

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