Initialization

Collaboration diagram for Initialization:

Functions
void	tr_rtc_driver_init (uint32_t reset_reason)
	Initialize the RTC driver and reconstruct internal state.

Detailed Description

Function Documentation

tr_rtc_driver_init()

void tr_rtc_driver_init

(

uint32_t

reset_reason

)

Initialize the RTC driver and reconstruct internal state.

Parameters

[in]

reset_reason

One of TR_HAL_RESET_REASON_POWER, TR_HAL_RESET_REASON_EXTERNAL_RESET, TR_HAL_RESET_REASON_WATCHDOG, TR_HAL_RESET_REASON_SOFT, or TR_HAL_RESET_REASON_DEEP_SLEEP.

Call once per boot, as early as possible in main() and before any time‑related APIs (including FreeRTOS start or tickless hooks).

• On POWER/EXTERNAL/WATCHDOG, retention state is reinitialized, monotonic uptime is set to 0, wall‑clock offset cleared, and the reference time is captured from the current RTC value.
• On SOFT/DEEP_SLEEP, retention state is preserved and the driver reconstructs uptime/wall‑clock from (base,ref,offset).

Example

int main(void)
{
    // ... clocks, board init ...
    uint32_t cause = platform_read_reset_cause();
    tr_rtc_driver_init(cause);               // must be called early
 
    // ... other drivers ...
    vTaskStartScheduler();
}