Hello,
I am currently using the nRF54L DK and running the ESB (Enhanced ShockBurst) sample in nRF Connect SDK v2.8.0. I would like to change the LF (low-frequency) clock source from XTAL to RC (LFRC), so I added the following configurations in prj.conf:
CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y CONFIG_CLOCK_CONTROL_NRF_K32SRC_500PPM=y
The build process completes successfully, but after flashing the firmware, the device continuously resets and encounters the following error:
*** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** *** Using Zephyr OS v3.7.99-0bc3393fb112 *** I: Enhanced ShockBurst ptx sample I: GPIO_Init D: HF clock started I: Initialization complete I: Sending test packet I: Allocated GRTC channel 6 ASSERTION FAIL @ WEST_TOPDIR/zephyr/drivers/clock_control/clock_control_nrf.c:626 E: r0/a1: 0x00000004 r1/a2: 0x00000272 r2/a3: 0x00000000 E: r3/a4: 0x00000004 r12/ip: 0x00000000 r14/lr: 0x0004a4fd E: xpsr: 0x2100011e E: Faulting instruction address (r15/pc): 0x00050eca E: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0 E: Fault during interrupt handling E: Current thread: 0x20013768 (unknown) *** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** *** Using Zephyr OS v3.7.99-0bc3393fb112 *** I: Enhanced ShockBurst ptx sample I: GPIO_Init D: HF clock started I: Initialization complete I: Sending test packet I: Allocated GRTC channel 6 ASSERTION FAIL @ WEST_TOPDIR/zephyr/drivers/clock_control/clock_control_nrf.c:626 E: r0/a1: 0x00000004 r1/a2: 0x00000272 r2/a3: 0x00000000 E: r3/a4: 0x00000004 r12/ip: 0x00000000 r14/lr: 0x0004a4fd E: xpsr: 0x2100011e E: Faulting instruction address (r15/pc): 0x00050eca E: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0 E: Fault during interrupt handling E: Current thread: 0x20013768 (unknown) *** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** *** Using Zephyr OS v3.7.99-0bc3393fb112 *** I: Enhanced ShockBurst ptx sample I: GPIO_Init D: HF clock started I: Initialization complete I: Sending test packet I: Allocated GRTC channel 6 ASSERTION FAIL @ WEST_TOPDIR/zephyr/drivers/clock_control/clock_control_nrf.c:626 E: r0/a1: 0x00000004 r1/a2: 0x00000272 r2/a3: 0x00000000 E: r3/a4: 0x00000004 r12/ip: 0x00000000 r14/lr: 0x0004a4fd E: xpsr: 0x2100011e E: Faulting instruction address (r15/pc): 0x00050eca E: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0 E: Fault during interrupt handling E: Current thread: 0x20013768 (unknown) *** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** *** Using Zephyr OS v3.7.99-0bc3393fb112 *** I: Enhanced ShockBurst ptx sample I: GPIO_Init D: HF clock started I: Initialization complete I: Sending test packet I: Allocated GRTC channel 6 ASSERTION FAIL @ WEST_TOPDIR/zephyr/drivers/clock_control/clock_control_nrf.c:626 E: r0/a1: 0x00000004 r1/a2: 0x00000272 r2/a3: 0x00000000 E: r3/a4: 0x00000004 r12/ip: 0x00000000 r14/lr: 0x0004a4fd E: xpsr: 0x2100011e E: Faulting instruction address (r15/pc): 0x00050eca E: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0 E: Fault during interrupt handling E: Current thread: 0x20013768 (unknown) *** Booting nRF Connect SDK v2.8.0-a2386bfc8401 *** *** Using Zephyr OS v3.7.99-0bc3393fb112 *** I: Enhanced ShockBurst ptx sample I: GPIO_Init D: HF clock started I: Initialization complete I: Sending test packet I: Allocated GRTC channel 6
Could you advise on the correct way to enable LFRC on the nRF54L?
- Are there additional
CONFIG_CLOCK_CONTROL_NRF_K32SRC_*parameters required? - Are there any known limitations or additional initialization steps needed?
I appreciate your support!
Best Regards,
Doris
