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No JTAG device found

Yi Chen

Hi,
When I using ULINK2 to program LPC2478, the uVision4 showed "no JTAG device found".
It was working normal before but failed suddenly at this board. Can anyone help me on this ?

Parents
  • 0 in reply to Yi Chen

    May be the code you programmed on the device is interfering with the JTAG pins/configuration.

    Erase the device of your code, use an alternate ISP method, or boot mode, if the device permits such.

    If it's an electrical issue, either with the power, connection, oscillators, etc you'll need to break out some equipment and test/diagnose the underlying issue.

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  • 0 in reply to Yi Chen

    May be the code you programmed on the device is interfering with the JTAG pins/configuration.

    Erase the device of your code, use an alternate ISP method, or boot mode, if the device permits such.

    If it's an electrical issue, either with the power, connection, oscillators, etc you'll need to break out some equipment and test/diagnose the underlying issue.

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