LwWDG
- group LWWDG
Lightweight watchdog for RTOS in embedded systems.
Functions
-
uint8_t lwwdg_init(void)
Initialize watchdog module.
- Returns
1on success,0otherwise
-
uint8_t lwwdg_add(lwwdg_wdg_t *wdg, uint32_t timeout)
Add new watchdog timer instance to internal linked list.
- Parameters
wdg – Watchdog handle. Must not be local variable
timeout – Max allowed timeout in milliseconds
- Returns
1on success,0otherwise
-
uint8_t lwwdg_remove(lwwdg_wdg_t *wdg)
Remove watchdog from the list.
This function is typically used if a task is killed by the scheduler. A user must manually call the function and can later clean wdg memory
- Parameters
wdg – Watchdog handle to remove from list
- Returns
1if removed,0otherwise
-
uint8_t lwwdg_reload(lwwdg_wdg_t *wdg)
Reload thread watchdog.
Note
Reload will not be successful, if there was a timeout before. This will ensure that main thread won’t reload hardware watchdog, resulting system to reset
- Parameters
wdg – Watchdog handle to reload
- Returns
1on success,0otherwise
-
uint8_t lwwdg_process(void)
Process and check system timers.
Function will check all timers and will return OK, if all timers are within max timeout state
- Returns
1if hardware watchdog can be reset,0if at least one timer hasn’t been reloaded within maximum timeout
-
void lwwdg_set_name(lwwdg_wdg_t *wdg, const char *name)
Set the watchdog name for debug reasons.
Note
Available only when LWWDG_CFG_ENABLE_WDG_NAME is enabled
- Parameters
wdg – Watchdog instance
name – Pointer to the constant string for the name. String is not copied, rather only pointer is set
-
void lwwdg_print_expired(void)
Print all expired watchdogs.
Note
LWWDG_CFG_ENABLE_WDG_NAME and LWWDG_CFG_WDG_NAME_ERR_DEBUG must be enabled and implemented
-
struct lwwdg_wdg_t
- #include <lwwdg.h>
Watchdog structure.
-
uint8_t lwwdg_init(void)