Add eeprom tests

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "eeprom/lib/AT24Cx"]
+	path = eeprom/lib/AT24Cx
+	url = https://github.com/cyberp/AT24Cx.git

eeprom-search/eeprom-search.ino

@@ -0,0 +1,41 @@
+
+/*
+*
+* Search for an EEPROM.
+* This sketch iterate the eight possible I2C addresses and 
+* checks if an EEPROM is found.
+*
+* Written by Christian Paul, 2014-11-24
+* 
+* 
+*/
+
+// include libraries
+#include <Wire.h>
+
+// setup
+void setup() {
+  Serial.begin(9600);
+  Serial.println("AT24CX search");
+  Serial.println("-------------------------");
+  
+  Wire.begin();
+  int i2c = 0x50;
+  for (int i=0; i<8; i++) {
+    Serial.print("Search at [");
+    Serial.print(i2c, HEX);
+    Serial.print("]: ");
+    Wire.beginTransmission(i2c);
+    int result = Wire.endTransmission();
+    if (result==0)
+      Serial.println("FOUND!");
+    else
+      Serial.println("not found");
+    i2c++;
+  }
+
+}
+
+// main loop
+void loop() {}
+

eeprom/eeprom.ino

@@ -0,0 +1,29 @@
+#include "lib/AT24Cx/AT24CX.h"
+#include "lib/AT24Cx/AT24CX.cpp"
+
+char dataTemplate[] = "Heya!";
+AT24C64 eeprom;
+
+void setup() {
+  Serial.begin(9600);
+}
+
+
+void loop() {
+  Serial.print("Writing to chip - ");
+  eeprom.writeChars(200, dataTemplate, sizeof(dataTemplate));
+  Serial.println("done");
+  Serial.print("Data: ");
+  Serial.print(dataTemplate);
+  Serial.println();
+  delay(1000);
+
+  
+  Serial.print("Data on chip: '");
+  char data[5];
+  eeprom.readChars(200, data, sizeof(data));
+  Serial.print(data);
+  Serial.println("'");
+  delay(1000);
+}
+

eeprom/lib/AT24Cx

@@ -0,0 +1 @@
+Subproject commit a271dcb7a1a4881692fd81f13f53f80b1863bf24