7 Commits

Author	SHA1	Message	Date
Cristian Maglie	8344812ce8	[avr] Made SPI.begin() and SPI.end() synchronized (Andrew Kroll)	2014-11-25 15:49:17 +01:00
Cristian Maglie	53e25d8b55	[avr] Improved SPI speed on 16bit transfer. ... From https://github.com/arduino/Arduino/pull/2376#issuecomment-59671152 Quoting Andrew Kroll: [..this commit..] introduces a small delay that can prevent the wait loop form iterating when running at the maximum speed. This gives you a little more speed, even if it seems counter-intuitive. At lower speeds, it is unnoticed. Watch the output on an oscilloscope when running full SPI speed, and you should see closer back-to-back writes. Quoting Paul Stoffregen: I did quite a bit of experimenting with the NOP addition. The one that's in my copy gives about a 10% speedup on AVR.	2014-11-25 15:49:17 +01:00
Cristian Maglie	993cc9bbb4	[avr] Small comments and headers fixes in SPI	2014-11-14 00:23:11 +01:00
PaulStoffregen	3d5ef6d5d9	SPI Transactions for AVR	2014-08-01 05:38:27 -07:00
Cristian Maglie	d5c828736b	Revert "SPI library to new format"	2013-11-21 15:05:36 +01:00
Fede85	2371e2ce0d	SPI library to the new format and moved Robot_Motor and Robot_Control libraries	2013-07-03 22:00:02 +02:00
Cristian Maglie	57b8713cab	Moved libraries folder inside platform folder. Now libraries and examples are searched per board/platform	2012-01-04 15:14:51 +01:00