Error: "Could not find supported CPU core on JTAG chain"

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  • Error: "Could not find supported CPU core on JTAG chain"

    Hello Group!

    I keep getting the error: "Could not find supported CPU core on JTAG chain" when I try to download and debug. I'm using the IAR embedded workbench and the target CPU is the Atmel AT91SAM7L128. Anybody have any ideas???

    Does the current version of SAM-ICE support the new AT91SAM7L128?

    Here is the output of jlink.exe with the SAM-ICE connected to a AT91SAM7L-STK eval board:
    SEGGER J-Link Commander V3.90 ('?' for help)
    Compiled Aug 12 2008 11:34:28
    DLL version V3.90, compiled Aug 12 2008 11:34:14
    Firmware: J-Link ARM V6 compiled Jul 30 2008 11:24:59
    Hardware: V6.00
    S/N 26002221
    OEM: SAM-ICE
    Features: RDI
    Vtarget = 2.976V

    ****** Error: Could not find supported CPU core on JTAG chain
    JTAG speed: 5 KHZ


    Thanks!

    trwinok

    The post was edited 2 times, last by trwinok ().

  • This should work. Maybe you should hook up a scope and check the JTAG signals.
    Maybe you should also read the "trouble shooting section" of the J-Link manual.
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