Zephyr fatal error 19 with sample hci_pwr_ctrl on nRF54L15

Hi

I tried to run the sample "hci_pwr_ctrl" from the NCS v2.7.0 on the nRF54L15.

After starting the sample, the modification of the TX power level during the advertising works as expected.

But as soon as I establish a connection to the PDK, the following error occurs when the function "set_tx_power" is called:

[00:00:22.537,526] <err> os: ***** MPU FAULT *****
[00:00:22.537,531] <err> os:   Data Access Violation
[00:00:22.537,536] <err> os:   MMFAR Address: 0x1
[00:00:22.537,547] <err> os: r0/a1:  0x00000003  r1/a2:  0x80000000  r2/a3:  0x00000001
[00:00:22.537,555] <err> os: r3/a4:  0x00000000 r12/ip:  0x000110cb r14/lr:  0x00010e85
[00:00:22.537,559] <err> os:  xpsr:  0xa1004400
[00:00:22.537,563] <err> os: Faulting instruction address (r15/pc): 0x00010e90
[00:00:22.537,584] <err> os: >>> ZEPHYR FATAL ERROR 19: Unknown error on CPU 0
[00:00:22.537,609] <err> os: Current thread: 0x200022a8 (BT TX)
[00:00:22.608,393] <err> os: Halting system

Can you reprodude this issue? Do you have a solution?

Many thanks in advance.

Best regards,

Remo

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