http://forums.leaflabs.com/topic.php?id=1168 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:18:30 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1168#post-7145 Fri, 11 Nov 2011 13:59:08 +0000 Dweller 7145@http://forums.leaflabs.com/ <p>I'm reading time deltas from a pin using a timer, and currently storing them to memory in an array, which is a touch too small.. given the smallest delta can be around 4us, I was wondering if I could use DMA to push a grabbed buffer load of deltas to an SPI FRAM, I think it'd have to be DMA, to free up the cpu to get on with the next delta. </p> <p>There are a few examples from arduino land for how to talk to an spi fram chip, and a few on using DMA on the maple to push to an sdcard, I guess I could even consider an edge triggered interrupt to initiate DMA to write a single byte out to the spi, but I'm not sure if it's possible to have DMA take care of it .. </p> <p>Anyone know a little more ?? </p>