Microcontroller User's Manual

MOTOROLA Chapter 23. UART Modules 23-33
Operation
Figure 23-26. UART Mode Programming Flowchart (Sheet 3 of 5)
A
B
B
FRCHK
HAVE
FRAMING ERROR
?
SET FRAMING
ERROR FLAG
PRCHK
HAVE
PARITY ERROR
?
SET PARITY
ERROR FLAG
GET CHARACTER
FROM RECEIVER
SAME AS
TRANSMITTED
CHARACTER
?
SET INCORRECT
CHARACTER FLAG
N
N
Y
CHRCHK
Y
N
DISABLE
TRANSMITTER
RSTCHN
RESTORE
TO ORIGINAL MODE
RETURN