Hi NXP Community,
I am working with the FRDM-IMX8MPLUS development board and trying to debug it using a Lauterbach TRACE32 via the 10-pin JTAG interface.
I am encountering a severe issue: the system resets/powers off immediately the moment I plug the JTAG cable into the board while it is running.
I try to execute SYStem.Mode Attach in the TRACE32 software, it fails and returns the error: debug port time-out at UNKNOWN.
I suspect this behavior is tied to the Cold Reset signal path. Before connecting the debugger, both VTREF (Pin 1) and JTAG_RESET (Pin 10) are stable at 1.8V. Upon plugging in the TRACE32, JTAG_RESET instantly drops to 0V, which coincides with VTREF falling to 0.7V and crashing the system (the green led turn off).
How can I properly configure the hardware/software to avoid the reset issue and successfully attach the debugger?
Thanks in advance!
Hi,
I also attach images of the board when Trace32 is plugged in and when it is unplugged.
Regard
Hi Joseph,
I am following these steps:
- Power off the IMX8MP board and connect Trace32.
- Power on the board.
However, the board does not boot. There is no output on the serial UART, and LED D16 does not turn on.
If I disconnect Trace32, the board boots successfully again.
Regards,
Hi,
Thank you for your interest in NXP Semiconductor products,
Could you please try connecting TRACE32 before target POR?
Regards