We use nRF52840 DK for getting the reset board reason.
We used different scenarios to receive these events, Pin reset, Watchdog, Software reset (from source: sys_reboot(SYS_REBOOT COLD)). And it worked.
But,
We need to see the board reset cause of the error in case of buffer overflow, which causes the error: "buffer overflow detected".
And we see that we get the same reason for the reset: "Software reset".
We tried different ways to get the reason for the reset:
1)
int32_t reset_reason = 0;
reset_reason = NRF_POWER->RESETREAS;
printf("reset_reason: 0x%08x.\n", reset_reason);
NRF_POWER->RESETREAS = NRF_POWER->RESETREAS;
reset_reason_print(reset_reason);
void reset_reason_print(uint32_t reason)
{
printf("RESET_PIN: %d\n", reason & BIT(0)); // 0 bit
printf("WATCHDOG: %d\n", reason & BIT(1)); // 1 bit
printf("SREQ: %d\n", reason & BIT(2)); // 2 bit
printf("LOCKUP: %d\n", reason & BIT(3)); // 3 bit
printf("OFF: %d\n", reason & BIT(16)); // 16 bit
printf("LPCOMP: %d\n", reason & BIT(17)); // 17 bit
printf("DIF: %d\n", reason & BIT(18)); // 18 bit
printf("NFC: %d\n", reason & BIT(19)); // 19 bit
}
2)
int32_t reset_reason = 0;
int ret = hwinfo_get_reset_cause(&reset_reason);
printf("Reset cause: %d, result: %d\n", reset_reason, ret);
reset_reason_print(reset_reason);
void reset_reason_print(uint32_t reason)
{
printf("RESET_PIN: %d\n", reason & RESET_PIN); // 0
printf("RESET_SOFTWARE: %d\n", reason & RESET_SOFTWARE); // 1
printf("RESET_BROWNOUT: %d\n", reason & RESET_BROWNOUT); // 2
printf("RESET_POR: %d\n", reason & RESET_POR); // 3
printf("RESET_WATCHDOG: %d\n", reason & RESET_WATCHDOG); // 4
printf("RESET_DEBUG: %d\n", reason & RESET_DEBUG); // 5
printf("RESET_SECURITY: %d\n", reason & RESET_SECURITY); // 6
printf("RESET_LOW_POWER_WAKE: %d\n", reason & RESET_LOW_POWER_WAKE); // 7
printf("RESET_CPU_LOCKUP: %d\n", reason & RESET_CPU_LOCKUP); // 8
printf("RESET_PARITY: %d\n", reason & RESET_PARITY); // 9
printf("RESET_PLL: %d\n", reason & RESET_PLL); // 10
printf("RESET_CLOCK: %d\n", reason & RESET_CLOCK); // 11
printf("RESET_HARDWARE: %d\n", reason & RESET_HARDWARE); // 12
printf("RESET_USER: %d\n", reason & RESET_USER); // 13
printf("RESET_TEMPERATURE: %d\n", reason & RESET_TEMPERATURE); // 14
}In any of the options, we always get the reason that it is a software reset when we cause a buffer overflow: "buffer overflow detected".
How can we get the reason that the reset was due to a buffer overflow error?
how to separate this from the usual call to reset the firmware?
