Unable to connect MultiLink to RT1064: "Warning: Unable to go to background. Core is running"

By Jason L. : Jul 11, 2025 at 03:09 PM (15:09 hours)
Staff: Juan S. : 3 comments

In PROGACMP, we are unable to connect from a MultiLink to the SWD interface of an i.MX RT1064 on a custom board design. The board is new and nothing has been loaded into the RT1064. Both blue and yellow LEDs on the MultiLink are on when plugged into the RT1064's SWD port and there is clock and data traffic on the SWD pins when trying to connect. We have also probed the RT1064 and verified that there is correct voltage on power rails and that its 24 MHz oscillator is running. We get the following warning repeated several times before it fails.

"Warning: Unable to go to background. Core is running"

We are pretty sure this is a hardware issue specific to this custom design. We have other custom RT1064 board designs that we can connect to using the same MultiLink unit. However, we are having trouble finding the cause of this.

Any ideas on what else we can check?

Jason L. - July 11, 2025 - 03:09 PM (15:09 hours)

Moving this issue to support ticket for further discussion.

Johnny N. (PEmicro Staff) - July 15, 2025 - 10:31 AM (10:31 hours)

Hi Jason,

Can you please create a support request ticket and attach the schematic of your custom board?

Juan S. (PEmicro Staff) - July 11, 2025 - 04:00 PM (16:00 hours)

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