Added USB enhancements from @stevstrong

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Added USB enhancements from @stevstrong

Post by RogerClark » Thu Nov 10, 2016 9:56 am

Thanks to @stevstrong and @jaretburkett I have updated the USB Serial handling code,

See this long thread viewtopic.php?f=9&t=1477 and this PR on github ... 2/pull/220

I didn't action the PR, I had to merge / copy individual files because the PR also had unrelated SPI fixes (which I want to incorporate separately)

I've tested on my Black Pill and USB Serial is now blindingly fast

So much so, I wonder if the Pig-O-Scope could be updated to send the samples via USB to some sort of Open Source scope interface on the PC / Linux / Mac

A low speed logic analyser would also be fairly practical, but probably only a few mbits per second, depending on how many channels needed to be sampled.

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Re: Added USB enhancements from @stevstrong

Post by evildave_666 » Thu Nov 10, 2016 11:23 am

To be honest, the '51 uCs have the sample-to-usb sewn up, as they can buffer gpio to usb in hardware at faster than the clock rate.

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