Update Adafruit_MCP23017.cpp

Author: PsuFan

Adafruit_MCP23017.cpp

@@ -124,15 +124,17 @@ void Adafruit_MCP23017::begin(uint8_t addr, TwoWire *theWire) {
 
   _wire->begin();
 
+  _wire->setClock(400000);
+
   // set defaults!
   // all inputs on port A and B
   writeRegister(MCP23017_IODIRA, 0xff);
   writeRegister(MCP23017_IODIRB, 0xff);
-  
+
   // Turn off interrupt triggers
   writeRegister(MCP23017_GPINTENA, 0x00);
   writeRegister(MCP23017_GPINTENB, 0x00);
-  
+
   // Turn off pull up resistors
   writeRegister(MCP23017_GPPUA, 0x00);
   writeRegister(MCP23017_GPPUB, 0x00);
@@ -303,12 +305,6 @@ void Adafruit_MCP23017::setupInterruptPin(uint8_t pin, uint8_t mode) {
   updateRegisterBit(pin, HIGH, MCP23017_GPINTENA, MCP23017_GPINTENB);
 }
 
-/**
- * Disable a pin for interrupt.
- *
- * @param pin Pin to set
- *
- */
 void Adafruit_MCP23017::disableInterruptPin(uint8_t pin) {
   // disable the pin for interrupt
   updateRegisterBit(pin, LOW, MCP23017_GPINTENA, MCP23017_GPINTENB);