中断请求;
Cannot request exclusive semaphores at interrupt time.
无法在中断时请求独占的信号灯.
Using timer interrupt mode, and the establishment timer interrupt priority is highest, has realized electric quantity gathering and the memory, has guaranteed the electric quantity gathering timely request.
利用定时器中断方式且设置定时器中断优先级最高,实现了电量采集与存储,保证了电量采集的实时性要求。
Device drivers use these routines to request various types of data transfers ( control, interrupt, bulk, or isochronous).
设备驱动程序使用这些例程来请求各种类型的数据传输(control、interrupt、bulk或isochronous)。
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