Method waitInt

lib/i2cdev/I2Cdev.cpp:733–737

     */

    boolean Fastwire::waitInt() {
        int l = 250;
        while (!(TWCR & (1 << TWINT)) && l-- > 0);
        return l > 0;
    }

    void Fastwire::setup(int khz, boolean pullup) {
        TWCR = 0;