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Cristian Maglie 1e699c3600 Fix atomicity issues in SPI::beginTransaction and SPI::endTransaction (Andrew Kroll)
Previously, it could happen that SPI::beginTransaction was
interrupted by an ISR, while it is changing the SPI_AVR_EIMSK
register or interruptSave variable (it seems that there is
a small window after changing SPI_AVR_EIMSK where an interrupt
might still occur). If this happens, interruptSave is overwritten
with an invalid value, permanently disabling the pin interrupts.

To prevent this, disable interrupts globally while changing
these values.
2014-11-25 15:56:11 +01:00
bootloaders merge 2013-10-14 12:42:42 +02:00
cores/arduino Merge branch 'master' into ide-1.5.x 2014-10-21 17:47:59 +02:00
firmwares Merge branch 'master' into ide-1.5.x 2014-09-16 12:19:39 +02:00
libraries Fix atomicity issues in SPI::beginTransaction and SPI::endTransaction (Andrew Kroll) 2014-11-25 15:56:11 +01:00
variants Merge branch 'master' into ide-1.5.x 2014-02-12 17:17:33 +01:00
boards.txt set correct max size for mega2560 (to address issue #2277) 2014-09-21 17:10:06 +05:30
platform.txt Upped version to 1.6.0 2014-11-18 14:48:01 +01:00
programmers.txt added support for the ArduinoISP 2014-07-02 15:03:12 +02:00