create an i2c device with an address and be able to detect it

Adafruit_I2CDevice.cpp

@@ -0,0 +1,33 @@
+#include <Adafruit_I2CDevice.h>
+#include <Arduino.h>
+
+Adafruit_I2CDevice::Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire) {
+  _addr = addr;
+  _wire = theWire;
+  _begun = false;
+}
+
+bool Adafruit_I2CDevice::begin(void) {
+  _wire->begin();
+  _begun = true;
+
+  return detected();
+}
+
+bool Adafruit_I2CDevice::detected(void) {
+  // Init I2C if not done yet
+  if (!_begun && !begin()) {
+    return false;
+  }
+
+  // A basic scanner, see if it ACK's
+  _wire->beginTransmission(_addr);
+  if (_wire->endTransmission () == 0) {
+    return true;
+  }
+  return false;
+}
+
+uint8_t Adafruit_I2CDevice::address(void) {
+  return _addr;
+}

Adafruit_I2CDevice.h

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+#include <Wire.h>
+
+class Adafruit_I2CDevice {
+
+private:
+  uint8_t _addr;
+  TwoWire *_wire;
+  bool _begun;
+
+public:
+  Adafruit_I2CDevice(uint8_t addr, TwoWire *theWire=&Wire);
+  uint8_t address(void);
+  bool begin(void);
+  bool detected(void);
+};

examples/i2c_address_detect/i2c_address_detect.ino

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+#include <Adafruit_I2CDevice.h>
+
+Adafruit_I2CDevice i2c_dev = Adafruit_I2CDevice(0x10);
+
+void setup() {
+  while (!Serial) { delay(10); }
+  Serial.begin(115200);
+  Serial.println("I2C address detection test");
+
+  if (!i2c_dev.begin()) {
+    Serial.print("Did not find device at 0x");
+    Serial.println(i2c_dev.address(), HEX);
+    while (1);
+  }
+  Serial.print("Device found on address 0x");
+  Serial.println(i2c_dev.address(), HEX);
+}
+
+void loop() {
+  
+}