/**
 * @file app_wdt.h
 * @brief Independent watchdog (IWDG, LSI 32kHz): 4s timeout, fed from the
 *        FreeRTOS idle hook only while at least one application task has
 *        heartbeated within the last 3s. Frozen while the core is halted
 *        (DBG_IWDG_STOP) so SWD debug sessions do not trigger resets.
 */
#ifndef __APP_WDT_H__
#define __APP_WDT_H__

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief Report the reset cause (banner) and start the IWDG.
 *        Call once from main() after the USART banner.
 */
void app_wdt_init(void);

/**
 * @brief Mark a task as alive. Called from the BLE schedule / LED / CLI
 *        task loops; the idle hook stops feeding the IWDG when no task
 *        heartbeated for APP_WDT_HB_TIMEOUT_MS.
 */
void app_wdt_heartbeat(void);

#ifdef __cplusplus
}
#endif

#endif /* __APP_WDT_H__ */