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FreeRTOS系列第24篇---FreeRTOS信号量分析
FreeRTOS的信号量包括二进制信号量、计数信号量、互斥信号量(以后简称互斥量)和递归互斥信号量(以后简称递归互斥量)。 关于它们的区别可以参考《 FreeRTOS系列第19篇---FreeRTOS信号量》一文。 信号量API函数实际上都是宏,它使用现有的队列机制。这些宏 ...
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