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Hackpads are smart collaborative documents. Join Hackpad Now. 21555;彥寬. In the minimal SST version, we assume the simplest possible critical section one that unconditionally locks interrupts upon entry and unconditionally unlocks interrupts upon exit. Such simple critical sections should never nest, because interrupts will always be unlocked upon exit from the critical section, regardless of whether they were locked or unlocked before the entry. 這篇作者再講的並非是 cortex-M 系列的 NVIC所以他在 ISR 的用法不太一樣.PARSED CONTENT
The site had the following on the homepage, "In the minimal SST version, we assume the simplest possible critical section one that unconditionally locks interrupts upon entry and unconditionally unlocks interrupts upon exit." I noticed that the web page said " Such simple critical sections should never nest, because interrupts will always be unlocked upon exit from the critical section, regardless of whether they were locked or unlocked before the entry." They also stated " 這篇作者再講的並非是 cortex-M 系列的 NVIC所以他在 ISR 的用法不太一樣."