added set interupt persistency API

Author: Rocketct

src/Arduino_LTR381RGB.h

@@ -5,8 +5,8 @@
   at http://mozilla.org/MPL/2.0/
 */
 
-#ifndef  _ARUDINO_LTR381RGB_H_
-#define  _ARUDINO_LTR381RGB_H_
+#ifndef _ARUDINO_LTR381RGB_H_
+#define _ARUDINO_LTR381RGB_H_
 
 #include "LTR381RGB.h"
 

src/LTR381RGB.cpp

@@ -303,6 +303,10 @@ int LTR381RGBClass::getADCRate(int rate) {
   }
 }
 
+void LTR381RGBClass::setInteruptPersistence(int persistence) {
+  writeRegister(LTR381RGB_INT_PST, (persistence << 4));
+}
+
 void LTR381RGBClass::enableALSInterrupt() {
   uint8_t res = readRegister(LTR381RGB_INT_CFG);
   writeRegister(LTR381RGB_INT_CFG, res | 0x04);

src/LTR381RGB.h

@@ -29,6 +29,7 @@ class LTR381RGBClass {
     void setTimeout(unsigned long timeout = 200);
     int getADCResTime(int resolution);
     int getADCRate(int rate);
+    void setInteruptPersistence(int persistence);
     void enableALSInterrupt();
     void disableALSInterrupt();
     void resetSW();