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john2
Visitor II
March 13, 2008
Question

Lost JTAG

  • March 13, 2008
  • 2 replies
  • 716 views
Posted on March 13, 2008 at 05:47

Lost JTAG

    This topic has been closed for replies.

    2 replies

    J
    john2Author
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:50

    Hi,

    I'm trying to write a bootloader to live in flash bank 1 and switch to bank 0 as appropriate, usual stuff.

    I've managed to blow some simple code into bank 1, which runs if I power cycle the board, but I've lost JTAG connectivity. I get the message ''Too many JTAG devices in chain''. Of course, there's only the ARM chip.

    I'm using STR912FAW44 and Keil ULINK2, Keil compiler.

    Can anybody please help in getting my board back?

    Cheers

    John

    J
    john2Author
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 09:50

    Sorted it!

    http://www.keil.com/support/docs/3215.htm describes how to wipe the chip and start again.

    Pity their search engine didn't find it, but never mind.

    Cheers

    John

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