Before getting into the details of the main program, I'll explore the DMA utility functions.

在深入介绍主程序细节之前，我要先来探讨一下dma实用函数。

youdao

After the data is processed, mfc_put initiates a transfer back into main memory, and the next two functions cause you to wait for DMA completion.

在数据处理完之后，mfc _ put会发起一个传输，传回主存，接下来的两个函数会让您等待dma操作完成。

youdao

This code relies on some utility functions for handling DMA commands. Enter those functions as dma_utils.s

这段代码依赖于一些实用函数来处理 DMA 命令。

youdao