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patch #7723 Bus Pirate “raw-wire” mode which can run down to 5 kHz

Browse Source 
* buspirate.c: added raw wire mode
	* avrdude.1: added doc for rawfreq parameter
	* doc/avrdude.texi: added doc for rawfreq parameter

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1136 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
rliebscher
2013-01-30 17:58:48 +00:00
parent a4dbfc95fa
commit f33873b1ba
4 changed files with 106 additions and 33 deletions
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21
doc/avrdude.texi
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@@ -805,14 +805,29 @@ with programming the AVR in the other design.
@item @code{7} @tab 8 MHz
@end multitable
@item @samp{rawfreq=0..3}
Sets the SPI speed and uses the Bus Pirate's binary ``raw-wire'' mode instead
of the default binary SPI mode:
@multitable @columnfractions .05 .3
@item @code{0} @tab 5 kHz
@item @code{1} @tab 50 kHz
@item @code{2} @tab 100 kHz (Firmware v4.2+ only)
@item @code{3} @tab 400 kHz (v4.2+)
@end multitable
The only advantage of the ``raw-wire'' mode is that different SPI frequencies
are available. Paged writing is not implemented in this mode.
@item @samp{ascii}
Attempt to ASCII mode even when the firmware supports BinMode (binary mode).
Attempt to use ASCII mode even when the firmware supports BinMode (binary
mode).
BinMode is supported in firmware 2.7 and newer, older FW's either don't
have BinMode or their BinMode is buggy. ASCII mode is slower and makes
the above
@samp{reset=}
@samp{reset=}, @samp{spifreq=}
and
@samp{spifreq=}
@samp{rawfreq=}
parameters unavailable. Be aware that ASCII mode is not guaranteed to work
with newer firmware versions, and is retained only to maintain compatability
with older firmware versions.