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[nrf fromtree] samples: boards: nrf: system_off: Print reset reason. #2630

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Merged
merged 1 commit into from
Mar 21, 2025
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[nrf fromtree] samples: boards: nrf: system_off: Print reset reason. #2630

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1 change: 1 addition & 0 deletions samples/boards/nordic/system_off/prj.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -2,3 +2,4 @@ CONFIG_PM_DEVICE=y
CONFIG_GPIO=y
CONFIG_CRC=y
CONFIG_POWEROFF=y
CONFIG_HWINFO=y
2 changes: 2 additions & 0 deletions samples/boards/nordic/system_off/sample.yaml
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Expand Up @@ -68,6 +68,7 @@ tests:
- "Retained data not supported"
- "Entering system off; wait 2 seconds to restart"
- "system off demo"
- "Wakeup from System OFF by GRTC."
- "Retained data not supported"
- "Entering system off; wait 2 seconds to restart"
sample.boards.nrf.system_off.retained_mem.grtc_wakeup:
Expand Down Expand Up @@ -97,6 +98,7 @@ tests:
- "Off count: 1"
- "Active Ticks:"
- "Entering system off; wait 2 seconds to restart"
- "Wakeup from System OFF by GRTC."
sample.boards.nrf.system_off.lpcomp_wakeup:
extra_args: DTC_OVERLAY_FILE="boards/nrf54l15dk_nrf54l15_cpuapp_comparator.overlay"
platform_allow:
Expand Down
17 changes: 17 additions & 0 deletions samples/boards/nordic/system_off/src/main.c
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Expand Up @@ -11,6 +11,7 @@

#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/hwinfo.h>
#include <zephyr/drivers/comparator.h>
#include <zephyr/kernel.h>
#include <zephyr/pm/device.h>
Expand All @@ -28,6 +29,20 @@ static const struct gpio_dt_spec sw0 = GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios);
static const struct device *comp_dev = DEVICE_DT_GET(DT_NODELABEL(comp));
#endif

void print_reset_cause(void)
{
uint32_t reset_cause;

hwinfo_get_reset_cause(&reset_cause);
if (reset_cause & RESET_DEBUG) {
printf("Reset by debugger.\n");
} else if (reset_cause & RESET_CLOCK) {
printf("Wakeup from System OFF by GRTC.\n");
} else {
printf("Other wake up cause 0x%08X.\n", reset_cause);
}
}

int main(void)
{
int rc;
Expand All @@ -39,6 +54,7 @@ int main(void)
}

printf("\n%s system off demo\n", CONFIG_BOARD);
print_reset_cause();

if (IS_ENABLED(CONFIG_APP_USE_RETAINED_MEM)) {
bool retained_ok = retained_validate();
Expand Down Expand Up @@ -98,6 +114,7 @@ int main(void)
retained_update();
}

hwinfo_clear_reset_cause();
sys_poweroff();

return 0;
Expand Down