Debugging nRF54 (w/ TFM), TFM halts after any breakpoint in app

RE: Debugging nRF54 (w/ TFM), TFM halts after any breakpoint in app

Hung Bui — Thu, 15 Jan 2026 14:17:49 GMT

Hi,
Please create a new ticket for your question. Please make sure you selected the debug optimization level when you build the project.

RE: Debugging nRF54 (w/ TFM), TFM halts after any breakpoint in app

NordicBert — Wed, 14 Jan 2026 13:21:00 GMT

Hi,
I have the same issue running the peripheral UART sample.
Is there a solution to this?
Best regards,

Bert

RE: Debugging nRF54 (w/ TFM), TFM halts after any breakpoint in app

BloPoPs — Tue, 23 Sep 2025 13:06:22 GMT

Hi, I have the same issue with the nRF54L15-DK running the intermediate course Lesson 1 Exercice 1. I hit the first breakpoint then when continue debugging it enters the tfm_hal_system_halt() called by tfm_core_panic() called by MPC_Handler(). Do you have a solution to this ?

RE: Debugging nRF54 (w/ TFM), TFM halts after any breakpoint in app

Konstantin Klitenik — Tue, 12 Aug 2025 12:41:08 GMT

We removed TFM from our application, as we don't need it. I suspect the sample is going to work and it must have been some combination of configs that was causing issues. Given this is a moot point for us, we can consider this ticket closed.

RE: Debugging nRF54 (w/ TFM), TFM halts after any breakpoint in app

Hung Bui — Tue, 12 Aug 2025 11:52:05 GMT

Hi Konstantin,
Can you reproduce the issue with our sample in the SDK for example peripheral_lbs ?
I did a quick test here building the sample for nrf54l15dk/nrf54l14/cpuapp/ns and it seems that I can step in the code fine with the Jlink GDB server (the default VS Code debugger)