WDG API指南

概述

看门狗（Watchdog），又叫看门狗计时器（Watchdog timer），是一种硬件的计时设备，当系统的主程序发生某些错误时，导致未及时清除看门狗计时器的计时值，这时看门狗计时器就会对系统发出复位信号，使系统从悬停状态恢复到正常运作状态

API参考

Header File

  • components/platform/hosal/include/hosal_wdg.h

Functions

int hosal_wdg_init(hosal_wdg_dev_t *wdg)

This function will initialize the on board CPU hardware watch dog.

return

  • 0 : success

  • other: fail

    Parameters

  • wdg: the watch dog device

void hosal_wdg_reload(hosal_wdg_dev_t *wdg)

Reload watchdog counter.

Parameters

  • wdg: the watch dog device

int hosal_wdg_finalize(hosal_wdg_dev_t *wdg)

This function performs any platform-specific cleanup needed for hardware watch dog.

return

  • 0 : success

  • other: fail

Parameters

  • wdg: the watch dog device

Structures

struct hosal_wdg_config_t

wdg config struct

Public Members

uint32_t timeout

Watchdag timeout in ms

structhosal_wdg_dev_t

wdg dev struct

Public Members

uint8_t port

wdg port

hosal_wdg_config_t config

wdg config

void *priv

priv data