31 Jul '16, 8pm

Blindingly Fast ADC for Your BeagleBone

[Jason Holt] wrote in to tell about of the release of his PRUDAQ project. It’s a dual-channel 10-bit ADC cape that ties into the BeagleBone’s Programmable Realtime Units (PRUs) to shuttle through up to as much as 20 megasamples per second for each channel. That’s a lot of bandwidth! The trick is reading the ADC out with the PRUs, which are essentially a little bit of programmable logic that’s built on to the board. With a bit of PRU code, the data can be shuttled out of the ADC and into the BeagleBone’s memory about as fast as you could wish. Indeed, it’s too fast for the demo code that [Jason] wrote, which can’t even access the RAM that fast. Instead, you’ll want to use custom kernel drivers from the BeagleLogic project (that we’ve covered here before ). But even then, if you don’t want to process the data onboard, you’ve got to get it out somehow . 100 mbit Ethernet gets...

Full article: http://hackaday.com/2016/07/31/blindingly-fast-adc-for-yo...

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Blindingly Fast ADC for Your BeagleBone

hackaday.com 31 Jul '16, 8pm

[Jason Holt] wrote in to tell about of the release of his PRUDAQ project. It’s a dual-channel 10-bit ADC cape that ties in...

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