stm32_watchdog.c File Reference

#include "stm32/stm32_watchdog.h"
#include "log/log.h"
#include "timekeeping/timekeeping.h"
#include "main.h"

Include dependency graph for stm32_watchdog.c:

Functions
void	STM32_pet_watchdog ()
	Pet the STM32 Independent Watchdog (IWDG).

Variables
IWDG_HandleTypeDef	hiwdg
volatile uint32_t	STM32_watchdog_uptime_last_pet_ms = 0
	Uptime at the last time the watchdog was petted, in milliseconds.
volatile uint32_t	STM32_watchdog_total_pets_since_boot = 0
	Total number of times the STM32 watchdog has been petted since boot.

Function Documentation

STM32_pet_watchdog()

void STM32_pet_watchdog

(

)

Pet the STM32 Independent Watchdog (IWDG).

Note

Also, updates tracking variables and logs warnings if the petting took too long or too short.

The watchdog must be petted at least once every 16 seconds, and no more than once every 200ms.

A warning is issued if the time since the last pet is more than 15 seconds or less than 240ms.

Recall that the EPS has a ~5 minute watchdog as well (nothing to do with this one).

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

hiwdg

IWDG_HandleTypeDef hiwdg

extern

STM32_watchdog_total_pets_since_boot

volatile uint32_t STM32_watchdog_total_pets_since_boot = 0

Total number of times the STM32 watchdog has been petted since boot.

STM32_watchdog_uptime_last_pet_ms

volatile uint32_t STM32_watchdog_uptime_last_pet_ms = 0

Uptime at the last time the watchdog was petted, in milliseconds.