如果可以,比一个地址一个地址转移能节省多少时间?
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楼主你好!
应该是可以的,但是有一定的要求,以F2806X为例: DMA能访问的空间如下,用DMA的好处为在于硬件在后台自动搬运数据,不需要CPU去干预,因此在这段时间CPU还可以执行其他的代码。F2806X DMA搬运数据的速度为:4 cycles/word,应该不会比CPU慢。
Data sources/destinations:
– L5-L8 32K x 16 SARAM
– ADC memory bus mapped result registers
– McBSP transmit and receive buffers
– ePWM1-8 / HRPWM1-8