看门狗复位时preloadValue预装载值怎么确定,最大值是多少?
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您是指上电默认值吗?默认是最大值FFF。请看TRM手册17.3.29 Digital Watchdog Preload Register (RTIDWDPRLD)
https://www.ti.com/lit/ug/swru520e/swru520e.pdf