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嵌入式系统:阅读同一记忆组,有两个不同的DMAs
原标题:embedded system : reading that same memory block with two different DMAs
  • 时间:2009-12-23 08:52:21
  •  标签:
  • embedded
  • dma

I am new to embedded devices programing. I have a task that reads a block of data from the DSP memory address and copies it to other addresses (where other peripherals are mapped). the copying process is done by programming one of the DMA channels in the device. I would like, to have a copy of that data copied elsewhere in addition for the first copy.

现在,我的问题是,如果我使用第二个排雷中心频道,并在第一个排雷中心开始工作之后立即启动其复印业务,那么两个排雷中心行动是否会以某种方式相互串通?

最佳回答

我确信,依靠你做些什么,但又看不到,排雷部的渠道可能不会串通一气,尽管人们可能先发错。

如果你在微小小分辨率33F装置中重新使用这一装置,排雷部的点是,这种准入独立于万国邮联。 如果你有时间,你就可以把你的裁军部的时间安排与你的锁定时间相匹配,并读写。 此外,你还可以有多达8个单向渠道,这些渠道是优先订购的。

在这一平台上,我认为(我不知道)两个排雷中心频道不会同时运作,它们将根据这一特定渠道的优先事项运作。 更高的优先渠道将首先完工,即使初级优先渠道开始。

因此,如果是,你可以把你的信息复制到两个不同的地点,而不使用邮联的衣物,但时间将增加一倍。

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