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arduino-cli/libraries/AT24Cx/AT24CX_search_IC/AT24CX_search_IC.ino

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+/*
+*
+* 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(115200);
+  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() {}
+