Hello,
I'm trying to put the nRF54L15DK into System Off mode, using sdk & toolchain version v2.8.0.
The provided example (\samples\nfc\system_off) works on my evaluation board when selecting nrf54l15dk/nrf54l15/cpuapp,
but my minimal implementation fails with bus fault when selecting nrf54l15dk/nrf54l15/cpuapp/ns as target board:
E: ***** BUS FAULT *****
E: Precise data bus error
E: BFAR Address: 0x0
E: r0/a1: 0x40120000 r1/a2: 0x00081d77 r2/a3: 0xffffffff
E: r3/a4: 0x00000001 r12/ip: 0x00000000 r14/lr: 0x0006b91b
E: xpsr: 0x21000000
E: Faulting instruction address (r15/pc): 0x0007b936
E: >>> ZEPHYR FATAL ERROR 25: Unknown error on CPU 0
E: Current thread: 0x20015780 (main)
The fault always happens when assigning 1 to p_reg->SYSTEMOFF:
NRF_STATIC_INLINE void nrf_regulators_system_off(NRF_REGULATORS_Type * p_reg)
{
p_reg->SYSTEMOFF = REGULATORS_SYSTEMOFF_SYSTEMOFF_Msk;
__DSB();
/* Solution for simulated System OFF in debug mode */
while (true)
{
__WFE();
}
}
As I understand it, the regulators are accessible in my non-secure code per default anyway,
do I need to configure something else?
As a Beginner, the BFAR Address 0x0 seems wrong, but at least r0/a1: 0x4012 0000 seems to match the non-secure register for regulators per the documentation,
but probably I'm misinterpreting?
Any help is highly appreciated!
