Wire (I2C)

isEnabled()

Used to check if the Wire library is enabled already. Useful if using multiple slave devices on the same I2C bus. Check if enabled before calling Wire.begin() again.

// SYNTAX
Wire.isEnabled();

Returns: boolean true if I2C enabled, false if I2C disabled.

// EXAMPLE USAGE

// Initialize the I2C bus if not already enabled
if (!Wire.isEnabled()) {
    Wire.begin();
}