I have been experimenting with the dma on the dm6435 using the simulator and have been able to successfully perform chained transfers. Right now I have 2 dma channels. Each dma channel has 2 link PaRAM sets associated with it to perform automatic ping pong buffering. Since I have an input channel and an output channel, I chained them together so that the completion of the input transfer would trigger the start of the output transfer. I enabled interrupt completion only for the out transfer, and make sure that the previous transfer has completed before triggering the next one. I noticed that when I enable early transfer completion for the input channel that I receive a message from the simulator:
Error: TC Program set already active
I tinkered a little and found that if I set the out buffer to a different tc (transfer controller) that this error goes away. It also goes away if I set the transfer completion to only occur when the whole transfer is completed. I wanted to make sure this is expected behavior, ie I cannot "queue up" multiple channel events on the same transfer controller by performing chaining with early transfer completion.
btw, this code does not use any of the edma3 drivers. Thanks in advance for any insight.