Fixing SPI double-speed bug.

Bad bit manipulation was causing the double-speed flag to be set incorrectly. http://code.google.com/p/arduino/issues/detail?id=365
arduino · Oct 5, 2010 · b248953 · b248953
1 parent 224a7bf
commit b248953
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libraries/SPI/SPI.cpp b/libraries/SPI/SPI.cpp
@@ -56,6 +56,6 @@ void SPIClass::setDataMode(uint8_t mode)
 void SPIClass::setClockDivider(uint8_t rate)
 {
   SPCR = (SPCR & ~SPI_CLOCK_MASK) | (rate & SPI_CLOCK_MASK);
-  SPSR = (SPSR & ~SPI_2XCLOCK_MASK) | (rate & SPI_2XCLOCK_MASK);
+  SPSR = (SPSR & ~SPI_2XCLOCK_MASK) | ((rate >> 2) & SPI_2XCLOCK_MASK);
 }