How to use the DMA | Cypress Semiconductor
How to use the DMA
I am currently using DMA complete PC and FX3 communication. I created two channels, one for receiving data, one for the data transmission,the data receiving and sending process is achieved by DMA callback function!
Now the question is: PC sends FX3 data can receive, but FX3 sent to the PC data is stored in the buffer of the DMA, PC read data is previous data, not update the data? How can update the data in the PC before you read in the corresponding buffer?