Method requestFrom

Sming/Libraries/I2Cdev/I2Cdev.cpp:1416–1432

    }
    
    uint8_t TwoWire::requestFrom(uint8_t address, int quantity, uint16_t timeout) {
        // clamp to buffer length
        if (quantity > NBWIRE_BUFFER_LENGTH) {
            quantity = NBWIRE_BUFFER_LENGTH;
        }

        // perform blocking read into buffer
        twi_cbreadFromDone = NULL;
        twi_readFrom(address, rxBuffer, quantity);
        uint8_t read = twii_WaitForDone(timeout);

        // set rx buffer iterator vars
        rxBufferIndex = 0;
        rxBufferLength = read;
    
        return read;
    }
    
    void TwoWire::nbrequestFrom(uint8_t address, int quantity, void (*function)(int)) {
        // clamp to buffer length