2 stop bits: Sampling for 2 stop bits is done on the 8th, 9th and
10th samples of the first stop bit. If a framing error is detected
during the first stop bit the framing error flag will be set. The
second stop bit is not checked for framing error. The RXNE flag
will be set at the end of the first stop bit.
Спасибо, князь. Вы настоящий дворянин. И программист.