Re: [avrdude-dev] Serial programming AVR with FTDI FT232BM Bit Bang Mode

[Michael Holzt]

> So one byte of data to send to SPI becomes sixteen bytes to send over 
> USB (two per bit, one with SCLK low and one with SCLK high).  FTDI 
> supports 4096 byte USB packets, so you can send 256 bytes of real data 
> through the SPI per USB packet.

This means you "precalculate" the protocol and then transit it block-wise?

I don't see why this can't be made compatible with the bitbang design.
Instead of the direct output the par and serbb drvier does, the pin changes
can be stored into a buffer and transmitted as a block over usb later.

Regards
Michael

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