Method send

Sming/Libraries/I2Cdev/I2Cdev.cpp:1381–1400

    }
    
    void TwoWire::send(uint8_t data) {
        if (twi_transmitting) {
            // in master transmitter mode
            // don't bother if buffer is full
            if (txBufferLength >= NBWIRE_BUFFER_LENGTH) {
                return;
            }

            // put byte in tx buffer
            txBuffer[txBufferIndex] = data;
            ++txBufferIndex;

            // update amount in buffer
            txBufferLength = txBufferIndex;
        } else {
            // in slave send mode
            // reply to master
            //twi_transmit(&data, 1);
        }
    }
    
    uint8_t TwoWire::receive(void) {
        // default to returning null char