Hello TI Forums,
I have a design where I need to transmit variable lengths of data over a MIBSPI peripheral operating in multi-buffer mode and using DMA.
I need to update the DMA control packet to configure the source address and element count for each transfer, but while looking at the TRM (SPNU563A), p. 724, table 20-9, in the description of the DMA_EN bit, I understand that the control packet should be set before enabling the DMA controller.
What's unclear is whether the DMA controller should be disabled for updates to the control packet during execution, or if the control packets can be safely updated during execution without disabling and then re-enabling the DMA controller. I would very much prefer to avoid disabling the entire DMA controller to reconfigure a single channel, risking to stall/delay all of the other DMA channel transfers.
Note that the control packet would not be updated while the related DMA channel is involved in a transfer.
Thanks
