diff options
Diffstat (limited to 'libraries/Wire/examples/digital_potentiometer')
| -rw-r--r-- | libraries/Wire/examples/digital_potentiometer/digital_potentiometer.ino | 39 | 
1 files changed, 39 insertions, 0 deletions
| diff --git a/libraries/Wire/examples/digital_potentiometer/digital_potentiometer.ino b/libraries/Wire/examples/digital_potentiometer/digital_potentiometer.ino new file mode 100644 index 0000000..38da1c5 --- /dev/null +++ b/libraries/Wire/examples/digital_potentiometer/digital_potentiometer.ino @@ -0,0 +1,39 @@ +// 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. + +// 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); +} + | 
