File syn_hwwdt.h¶

FileList > src > syntropic > system > syn_hwwdt.h

Hardware Watchdog Timer driver. More...

#include "../common/syn_defs.h"
#include <stdint.h>

Public Functions¶

Type	Name
void	syn_hwwdt_feed (void) Feed (reload) the hardware watchdog counter.
SYN_Status	syn_hwwdt_init (uint32_t timeout_ms) Start the hardware watchdog with the given timeout.

Detailed Description¶

Wraps syn_port_wdt.h with a minimal driver interface. The hardware watchdog runs independently of the CPU and will reset the system if syn_hwwdt_feed() is not called within the configured timeout — even if the CPU is hard-locked.

Complementary to syn_watchdog.h (software task-stall detector).

Usage:

syn_hwwdt_init(2000);     // 2-second hardware timeout
// In main loop or scheduler tick:
syn_hwwdt_feed();

Public Functions Documentation¶

function syn_hwwdt_feed¶

Feed (reload) the hardware watchdog counter.

void syn_hwwdt_feed (
    void
)

Call this function from your main loop or scheduler idle hook to prevent the hardware from resetting the system.

function syn_hwwdt_init¶

Start the hardware watchdog with the given timeout.

SYN_Status syn_hwwdt_init (
    uint32_t timeout_ms
)

On most MCUs the watchdog cannot be disabled once started. syn_hwwdt_feed() must be called more frequently than timeout_ms.

Parameters:

timeout_ms Desired timeout in milliseconds.

Returns:

SYN_OK on success, SYN_ERROR if the hardware WDT cannot be started.

The documentation for this class was generated from the following file src/syntropic/system/syn_hwwdt.h