Merge branch 'master' of https://github.com/sparkfun/SparkFun_External_EEPROM_Arduino_Library

Author: Nathan Seidle

src/SparkFun_External_EEPROM.cpp

@@ -157,7 +157,7 @@ void ExternalEEPROM::read(uint32_t eepromLocation, uint8_t *buff, uint16_t buffe
     }
 
     //See if EEPROM is available or still writing a previous request
-    while (isBusy(i2cAddress) == true) //Poll device
+    while (settings.pollForWriteComplete && isBusy(i2cAddress) == true) //Poll device
       delayMicroseconds(100);          //This shortens the amount of time waiting between writes but hammers the I2C bus
 
     settings.i2cPort->beginTransmission(i2cAddress);
@@ -221,7 +221,7 @@ void ExternalEEPROM::write(uint32_t eepromLocation, const uint8_t *dataToWrite,
     }
 
     //See if EEPROM is available or still writing a previous request
-    while (isBusy(i2cAddress) == true) //Poll device
+    while (settings.pollForWriteComplete && isBusy(i2cAddress) == true) //Poll device
       delayMicroseconds(100);          //This shortens the amount of time waiting between writes but hammers the I2C bus
 
     settings.i2cPort->beginTransmission(i2cAddress);

src/SparkFun_External_EEPROM.h

@@ -49,6 +49,11 @@
 #define I2C_BUFFER_LENGTH_RX BUFFER_LENGTH //Teensy
 #define I2C_BUFFER_LENGTH_TX BUFFER_LENGTH
 
+#elif defined(ESP32)
+
+#define I2C_BUFFER_LENGTH_RX I2C_BUFFER_LENGTH
+#define I2C_BUFFER_LENGTH_TX I2C_BUFFER_LENGTH
+
 #else
 
 #pragma GCC error "This platform doesn't have a wire buffer size defined. Please contribute to this library!"