Comment about low-latency interrupts

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Re: Comment about low-latency interrupts

By RichardS
- Mon Aug 15, 2016 11:27 am #52996
cnlohr wrote:No, the problem is in that: With 1.5MBit USB, I use ccount to stay on track. If there was a very small interrupt <10 cycles, it probably wouldn't notice and would keep going, however, if I do 12 MBit USB, then, there is no timer, I'll simply be relying on the time it takes to execute every instruction. If something interrupts for say even 5 cycles, that's a phase shift induced in the whole transaction and would likely cause a complete failure.


Even if you got a throughput of 3-4mbps that would be nice, and at least all the peripherals like mass storage that rely on full speed could be implemented.

I see an interesting post about reading a peripheral with a rotate command and rotating it 0, might be a faster way also to read peripherals?? hoping...

RichardS
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