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path: root/bootloaders/optiboot/README.TXT
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2011-10-10Allow the READ PARAMETER command to return our version number.WestfW
(significant size impact: 14 bytes!) Initialized "address" to eliminate compiler warning (4 bytes!) Add "atmega168" as a more accurate target name than "diecimila" (keep diecimila as well for backward compatibility) Reduce the .hex and .lst targets that are stored in source control to the three basics: atmega8, atmega168, atmega328. The other targets remain in the makefile and makeall, but will need to be built from source if wanted. Which should be less of a problem now that the source is buildable without installing crosspack. (cherry picked from commit 7b1ee0f1b0192143fffbbed66dc046b6568f4386)
2011-10-10http://code.google.com/p/arduino/issues/detail?id=368WestfW
Optiboot does not support ArduinoasISP programmer. When avrdude runs and talks to an arduino running ArduinoISP, it needs the optiboot (entered due to auto-reset) to abort and start the ArduinoISP "application" when it sees communications at the wrong serial speed. Unfortunately, optiboot treats all unrecognized command characters as "no-ops" and responds/loops for more commands, leading to a nice loop that never gets to the sketch. This patch causes characters received with Framing errors (the most likely error for speed mis-matches) to NOT reset the watchdog timer (normally done in getch()), which will cause the application to start if it continues for "a while." (tested. Works! Running ArduinoISP at speeds as high as 57600 still causes the bootloader to start the sketch (although it fails later on for other reasons.)) (cherry picked from commit e81c1123b624b6cac7da018c9c786700f3152bc9)
2011-10-10Makefile modification to allow building optiboot in more environments.WestfW
Allows building within the Arduino Source tree, and within the Arduino IDE tree, as well as using CrossPack on Mac. Adds README.TXT to track arduino-specific changes (and documents the new build options.) This addresses Arduino issue: http://code.google.com/p/arduino/issues/detail?id=487 And optiboot issue http://code.google.com/p/optiboot/issues/detail?id=1 (which can be thought of as a subset of the Arduno issue.) Note that the binaries produced after these Makefile changes (using any of the compile environments) are identical to those produced by the crosspack-20100115 environment on a Mac. (cherry picked from commit 2d2ed324b48e709f59a002cb274ed60bb0ebc911)