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  • After checking my Jtag connection it seems to be the same as the TWR-K64F120M eval board and i am able to unlock the board using another programmer from this safe state and then program with the jtag programmer. Is there any other command i may be over looking that could address this issue? why is it that after issuing a erase command and resetting my board I am receiving an - Error: Could not find core in Coresight setup Thank you for your help is seems that the pinout on my board was different…

  • I figured that I would need to use the Unlock command somehow to achieve what I wanted but I didn't realized i had disabled that prompt I will try enabling it and see if that helps. I am using the Segger J-Link 19-pin Cortex-M Adapter though and I just realized on the product page its states : By default, TRST is not connected, but the Cortex-M Adapter comes with a solder bridge (NR1) which allows TRST to be connected to pin 9 of the Cortex-M adapter. Is this why the unlock command is not curren…

  • Hi, I'm trying to connect to a NXP MK64FN1M0VLQ12 after issuing it a erase command. The response from the board is as follows - Device "MK64FN1M0XXX12" selected. Connecting to target via JTAG InitTarget() Protection bytes in flash at addr. 0x400 - 0x40F indicate that readout protection is set. For debugger connection the device needs to be unsecured. Note: Unsecuring will trigger a mass erase of the internal flash. Executing default behavior previously saved in the registry. Device was not unsec…