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patch #9327: ft245r.c: add TPI support (patches 1-4)

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Submitted by David Mosberger-Tang:

Optimize TPI programming speed by reducing number of USB reads.
Specifically, when writing to the FTDI chip (without needing the data
it accumulates), simply increment a count of how many bytes the next
read should ignore.  Thus, if there is one or more write followed by a
read, we only need to read from the device once.

Improves TPI programming speed by another factor of 2.



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1485 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2021-11-24 22:06:31 +00:00
parent 7ff5652edc
commit 105cebb389
2 changed files with 23 additions and 5 deletions
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@@ -1,3 +1,10 @@
2021-11-24 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by David Mosberger-Tang:
patch #9327: ft245r.c: add TPI support (patches 1-4)
* ft245r.c (ft245r_recv): Optimize TPI programming
speed by reducing number of USB reads.
2021-11-24 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by David Mosberger-Tang: