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drivers/wdt: add periph_wdt_auto_start for early watchdog

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Add an option to enable the watchdog early to detect hangs during
initialisation.
This commit is contained in:
Benjamin Valentin 2022-06-24 14:04:28 +02:00 committed by Benjamin Valentin
parent fb603f2660
commit b8a6988e79
3 changed files with 26 additions and 0 deletions
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4
drivers/Makefile.dep
View File

@ -254,6 +254,10 @@ ifneq (,$(filter periph_timer_periodic,$(USEMODULE)))
FEATURES_REQUIRED += periph_timer
endif
ifneq (,$(filter periph_wdt_auto_start,$(USEMODULE)))
FEATURES_REQUIRED += periph_wdt
endif
ifneq (,$(filter-out netdev_default netdev_new_api netdev_legacy_api, $(filter netdev_%,$(USEMODULE))))
USEMODULE += netdev
# Don't register netdevs if there is only a single one of them

17
drivers/include/periph/wdt.h
View File

@ -230,6 +230,23 @@ extern "C" {
#define WDT_HAS_INIT (0)
#endif
/**
* @brief If `periph_wdt_auto_start` is used, this will be the lower bound
* of when the WDT can be kicked.
*/
#ifndef CONFIG_PERIPH_WDT_WIN_MIN_MS
#define CONFIG_PERIPH_WDT_WIN_MIN_MS (0)
#endif
/**
* @brief If `periph_wdt_auto_start` is used, this will be the max period
* after which the WDT must be kicked or else it will reboot the
* system.
*/
#ifndef CONFIG_PERIPH_WDT_WIN_MAX_MS
#define CONFIG_PERIPH_WDT_WIN_MAX_MS (1024)
#endif
/**
* @brief Start watchdog timer
*/

5
drivers/periph_common/init.c
View File

@ -102,6 +102,11 @@ void periph_init(void)
#if defined(MODULE_PERIPH_INIT_WDT) && WDT_HAS_INIT
wdt_init();
if (IS_ACTIVE(MODULE_PERIPH_WDT_AUTO_START)) {
wdt_setup_reboot(CONFIG_PERIPH_WDT_WIN_MIN_MS, CONFIG_PERIPH_WDT_WIN_MAX_MS);
wdt_start();
}
#endif
#if defined(MODULE_PERIPH_INIT_PTP)