Wire (I2C)

stretchClock()

Wire.stretchClock, stretchClock

Enables or Disables I2C clock stretching. This is an optional call (not from the original Arduino specs.) and must be called once before calling begin(). I2C clock stretching is only used with I2C Slave mode. The default I2C clock stretching mode is enabled.

// SYNTAX
Wire.stretchClock(stretch);
Wire.begin(4); // I2C Slave mode, address #4

Parameters:

  • stretch: boolean. true will enable clock stretching (default). false will disable clock stretching.