UERSTAT_BREAK
#define UERSTAT_ALL_ERRORS (UERSTAT_OVERRUN|UERSTAT_BREAK|UERSTAT_FRAME|UERSTAT_PARITY)
if (ISSET(rsr, UERSTAT_BREAK | UERSTAT_FRAME))
if (ISSET(uerstat, UERSTAT_BREAK)) {
if (uerstat & UERSTAT_BREAK) {
#define UERSTAT_ALL_ERRORS (UERSTAT_OVERRUN|UERSTAT_BREAK|UERSTAT_FRAME|UERSTAT_PARITY)