Author Topic: Capturing 64Bit Bus  (Read 6441 times)

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Offline Rasz

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Re: Capturing 64Bit Bus
« Reply #25 on: March 08, 2017, 01:23:41 am »
Or caused by the driver developers

sure.
10Mbit / FTDI 128 byte buffer = ~8K packets/second. By a coincidence(not) this is actual USB 2.0 isochronous packets/second limit(1ms*8 microframes). Now add craptastic software team and we end up with 8K context switches while the "driver" tries to pump all this into windows serial emulation layer, in single thread obviously.

Silicon Labs CP21xx serial converters send control signals/gpio using USB control transfers - they literary send individual bits using 3-way handshake 8 byte packets. Its like transferring binary files using TCP with 8 byte window size.

There are multiple ways of doing something in a stupid way, doesnt mean the interface is bad.
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Offline james_s

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Re: Capturing 64Bit Bus
« Reply #26 on: March 08, 2017, 01:26:33 am »
I never claimed the interface was bad, only backing up the implication of someone else that it is not all roses. Tech doesn't exist in a vacuum, a particular device may be flawless but that doesn't mean it will work flawlessly for me with the hardware/software/driver configuration I have.
 

Offline Rasz

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Re: Capturing 64Bit Bus
« Reply #27 on: March 08, 2017, 01:51:26 am »
I never claimed the interface was bad, only backing up the implication of someone else that it is not all roses. Tech doesn't exist in a vacuum, a particular device may be flawless but that doesn't mean it will work flawlessly for me with the hardware/software/driver configuration I have.

not you, NANDBlog did :)
Who logs in to gdm? Not I, said the duck.
My fireplace is on fire, but in all the wrong places.
 


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