当DMA和DAC工作时什么是正确的解决方案？

你好，
正如您可以在DAC API中读取的，使用PSoC 5，您必须将DAC值写入寄存器两次。我想是因为虫子。
那么，当使用DMA时，解决方案是什么？我必须用两个DAC发送两个函数（保存在两个数组中），同时用SAR ADC采样。所以在这个时候，我的项目中有4个DMA通道。
可悲的是，我发现DAC有时会有输出的问题。为了测试目的，我添加了两个以上的DMA通道，将相同的数据写入到DAC中两次。输出更稳定，但我在系统中有更多的问题。
在PSoC 5（Debug？）下，当DMA和DAC工作时，什么是正确的解决方案？
拜伊
弗兰兹

以上来自于百度翻译

   以下为原文
  Hi,

as you can read in the DAC Api, with PSoC 5 you have to write the DAC Value to the register twice. I think because of a bug.

So what is the solution when working with DMA? I have to send out two functions (saved in two arrays) with two DACs and sample simultanous with SAR ADC. So at this time there are 4 DMA channels in my project.

Sadly I see that the DACs have sometimes glitchy output. For testing purpose I added two more DMA Channels writing the same data twice to the first ones into the DAC. The output is more stable but I had some more problems in the system.

What is die correct solution when working with DMA and DACs under PSoC 5 (production?)

Bye
Franz

王琳

2019-5-16 14:10:30

在C源中，您仍然可以看到，除了PSoC5LP版本之外，对PSoC5设备进行了第二次写入。
有趣的是，我从来没有假设或经历过与DAC有关的问题，并且在ADC & GT；DMA-GT；DAC的附注中，从来没有提到过PSOC5的任何特殊之处。
鲍勃

以上来自于百度翻译

   以下为原文
  In the C-sources you can still see that a second write is made for PSoC5 devices except for the PSoC5LP version.
    Interesting, I never assumed or experienced an issue with the DAC and in the appnotes concerning ADC -> DMA -> DAC there was never anything special for PSoC5 mentioned.

    Bob