Take a look at the Intel® Quark Datasheet, there are multiple topics about DMA. UART Controller with DMA, Remote Management Unit DMA, SPI DMA Block, etc. Is this what you are looking for?
Thanks. I'm looking at the datasheet
It is 920 page... How can I set the bits in Ardunio? Do I need another IDE?
Is there any simple API I can just call it? Any sample code?
I know Arduino Due has DMA, I thought Galileo should have it... :<
Here is what I need
Wait for Hardware interrupt
start recording analog data and store in Buffer A.
Use Buffer B data and do lots of calculation.
Hardware interrupt is not supported on Galileo.
Although HW Interrupt is not supported, i'm pretty sure you can do buffered continuous ADC capture though.
You'd need to do this though the system file system either in a native linux app, or through use of the System(...) calls in Arduino.
It is an area that I am looking into as well, so I'll be doing a bit of digging soon and will let you know what I find.
The basics of it are like this:
You configure the ADC buffer size, capture mode, triggers etc via the file system, and the ADC fills a file with the captures. It continues to capture while you work on the contents of the buffer.
A google for ADC on Linux embedded will probably throw up some good stuff.