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kebap
Visitor II
May 11, 2005
Question

How to run a program?

  • May 11, 2005
  • 3 replies
  • 883 views
Posted on May 11, 2005 at 04:31

How to run a program?

    This topic has been closed for replies.

    3 replies

    K
    kebapAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:06

    Hello!

    We have a problem with our uPSD3254a.

    We have load a demo-program(initialize a display and put out a character)

    with PSDsoft Express to our microcontroller,but the LCD doesn't display anything.

    Does a start condition for the microcontroller exist?

    What have we to do, to run the microcontroller.

    Regards preines

    R
    rk1
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:06

    hi,

    no, there is no ''start condition''. but make sure to configure/trigger or disable the watchdog.

    if you want to know if the microcontroller is running, configure 1 pin as output and toggle it in an endless loop, and then look at the pin (i.e. with an oscilloscope).

    T
    thomasthanner9
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:06

    Hello,

    there are actually two conditions that can stop a uPSD from running. First is the Watchdog as already mentioned by rk__. Second is the pullup at the USB_D- pin. This pullup is required even on non USB-devices. Maybe that is what is missing from your design?

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