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Improve defaults and documentation of linuxspi

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* avrdude.conf.in: use @HAVE_LINUXGPIO_BEGIN/END@ and
@HAVE_LINUXSPI_BEGIN/END@ brackets around respective config
snippets; values were already set in configure.ac.
* linuxspi.c (linuxspi_open): Provide a reasonable (for the
Raspberry Pi) default for the -P option
* avrdude.1: Extend linuxspi documentation
* doc/avrdude.texi: (Dito.)



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1496 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2021-11-27 17:33:49 +00:00
parent 18fe8ef834
commit dd1255b0c8
6 changed files with 59 additions and 31 deletions
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11
avrdude.1
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@@ -129,13 +129,10 @@ should be connected between the AVR's reset pin and Vcc. If Vcc is not
the same as the SPI voltage, this should be done on the AVR side of
the level translator to protect the hardware from damage.
.Pp
A commented-out template for this programmer is provided in the
avrdude configuration file. To use it, clone that entry into the
per-user configuration file, and configure the
.Li reset
GPIO
number accordingly. Linuxspi can be used as follows:
.Dl avrdude -c linuxspi -P /dev/spidev:/dev/gpiochip[:resetpin]
The
.Fl P Ar portname
option for this programmer defaults to
.Li /dev/spidev0.0:/dev/gpiochip0 .
.Pp
Atmel's STK500 programmer is also supported and connects to a serial
port.