Resetable DMA for predefind amount of transfers Posted on February 10, 2018 at 20:49 Hey everyone, I've got a small issue. I've got a Dma that fills a buffer(Double buffer so 2 actually) with data at every rising clock edge. I only want this clock to trigger the DMA 192 times until a reset signal is received. Once the reset signal is received, the DMA should just carry on where it left off, so position 193 of the buffer. This image tries to portray what Im trying to do. I have 192 cycles of data, followed by junk until the reset signal is received.So I want the Timer to trigger the dma for 192 rising edges, stop and wait for reset and then repeat. Essentially this is what my timer configuration is like. An input capture which triggers the dma every rising edge and then a slave mode set for reset. If I cant do this directly on the timer, is there a way that I could cascade two timers, where the timer would come in between the 2.5 MHZ signal and the timer that triggers the dma, pass through the clock signal and stop once 192
