2026-05-30 00:24:31 +08:00
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/**
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* @file watchdog.cpp
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* @brief APP 独立看门狗（FWDGT）实现。
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*
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* 时钟源: IRC40K (~40 KHz)
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* 预分频: CONFIG_FWDGT_PSC, 重载值: CONFIG_FWDGT_RLD
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* 超时 = (PSC / 40000) * (RLD + 1) 秒
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*/
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#include "device/watchdog.h"
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#include "sys/config.h"
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#include "main.h"
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void Watchdog::init()
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{
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fwdgt_write_enable();
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2026-05-30 20:03:31 +08:00
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fwdgt_prescaler_value_config(CONFIG_FWDGT_PSC);
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fwdgt_reload_value_config(CONFIG_FWDGT_RLD);
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2026-05-30 00:24:31 +08:00
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fwdgt_write_disable();
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fwdgt_enable();
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}
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void Watchdog::feed()
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{
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fwdgt_counter_reload();
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}
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void Watchdog::abandon()
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{
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/* 不喂狗即可，FWDGT 超时后硬件自动复位。 */
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}
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