Added arduino libs

libraries/EnableInterrupt/utility/ei_PinChangeTiny25.h

@@ -0,0 +1,32 @@
+#ifdef EI_SECTION_RISING
+#ifndef EI_NOTPORTB
+  risingPinsPORTB |= portMask;
+#endif
+#endif // EI_SECTION_RISING
+
+#ifdef EI_SECTION_FALLING
+#ifndef EI_NOTPORTB
+  fallingPinsPORTB |= portMask;
+#endif
+#endif // EI_SECTION_FALLING
+
+#if defined EI_SECTION_ASSIGNFUNCTIONSREGISTERS
+#ifndef EI_NOTPORTB
+#ifndef NEEDFORSPEED
+  calculatedPointer=&portBFunctions.pinZero + portBitNumber;
+  *calculatedPointer = userFunction;
+#endif
+  portSnapshotB=*portInputRegister(portNumber);
+  pcmsk=&PCMSK;
+  GIMSK |= _BV(5);
+#endif
+#endif // EI_SECTION_ASSIGNFUNCTIONSREGISTERS
+
+#ifdef EI_SECTION_DISABLEPINCHANGE
+#ifndef EI_NOTPORTB
+  PCMSK &= ~portMask;
+  if (PCMSK == 0) { GIMSK &= ~_BV(5); };
+  risingPinsPORTB &= ~portMask;
+  fallingPinsPORTB &= ~portMask;
+#endif
+#endif // EI_SECTION_DISABLEPINCHANGE