Initial import

code/lib/Wire_1.8.19/examples/digital_potentiometer/digital_potentiometer.ino

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+// I2C Digital Potentiometer
+// by Nicholas Zambetti <http://www.zambetti.com>
+// and Shawn Bonkowski <http://people.interaction-ivrea.it/s.bonkowski/>
+
+// Demonstrates use of the Wire library
+// Controls AD5171 digital potentiometer via I2C/TWI
+
+// Created 31 March 2006
+
+// This example code is in the public domain.
+
+
+#include <Wire.h>
+
+void setup() {
+  Wire.begin(); // join i2c bus (address optional for master)
+}
+
+byte val = 0;
+
+void loop() {
+  Wire.beginTransmission(44); // transmit to device #44 (0x2c)
+  // device address is specified in datasheet
+  Wire.write(byte(0x00));            // sends instruction byte
+  Wire.write(val);             // sends potentiometer value byte
+  Wire.endTransmission();     // stop transmitting
+
+  val++;        // increment value
+  if (val == 64) { // if reached 64th position (max)
+    val = 0;    // start over from lowest value
+  }
+  delay(500);
+}
+