robtillaart did a big writeup on computing timings, rather than hard-coding them, for SoftwareSerial. As I recall, his results were pretty good for rates up to 57,600. See if you can find that thread.
robtillaart did a big writeup on computing timings, rather than hard-coding them, for SoftwareSerial. As I recall, his results were pretty good for rates up to 57,600. See if you can find that thread.