* limitations, some options may not be supported (baud rates with unacceptable
* error rates at the AVR's clock speed, data lengths other than 6, 7 or 8 bits,
* 1.5 stop bits, parity other than none, even or odd).
* limitations, some options may not be supported (baud rates with unacceptable
* error rates at the AVR's clock speed, data lengths other than 6, 7 or 8 bits,
* 1.5 stop bits, parity other than none, even or odd).