Joerg Wunsch 2015a874e0 patch #9328: ft245r.c: add TPI support (patches 5-7) ...

Submitted by David Mosberger-Tang:
* ft245r.c: Remove the reader thread (also removes
patch #9079)

Eliminate separate reader thread by tracking how many bytes are queued
in the FTDI chip's RX FIFO and reading those bytes when it fills up
(since in synchronous bitbang mode, the chip won't send any more bytes
until it has space in the RX FIFO).  This reduces TPI programming time
by another 33%.

Since write data is now queued as much as possible, we need flush this
queued data (a) before reading and (b) before sleeping.  For the
latter case, a new helper function ft245r_usleep() is introduced.




git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1487 81a1dc3b-b13d-400b-aceb-764788c761c2

2021-11-25 09:10:30 +00:00

6.8 KiB

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