STC micro STC8A8K64D4 Series - Page 428

STC8A8K64D4 Series Manual
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WPTR DATA 21H
RPTR DATA 22H
BUFFER DATA 23H ;16 bytes
P0M1 DATA 093H
P0M0 DATA 094H
P1M1 DATA 091H
P1M0 DATA 092H
P2M1 DATA 095H
P2M0 DATA 096H
P3M1 DATA 0B1H
P3M0 DATA 0B2H
P4M1 DATA 0B3H
P4M0 DATA 0B4H
P5M1 DATA 0C9H
P5M0 DATA 0CAH
ORG 0000H
LJMP MAIN
ORG 008BH
LJMP UART3_ISR
ORG 0100H
UART3_ISR:
PUSH ACC
PUSH PSW
MOV PSW,#08H
MOV A,S3CON
JNB ACC.1,CHKRI
ANL S3CON,#NOT 02H
CLR BUSY
CHKRI:
JNB ACC.0,UART3ISR_EXIT
ANL S3CON,#NOT 01H
MOV A,WPTR
ANL A,#0FH
ADD A,#BUFFER
MOV R0,A
MOV @R0,S3BUF
INC WPTR
UART3ISR_EXIT:
POP PSW
POP ACC
RETI
UART3_INIT:
MOV S3CON,#50H
MOV T3L,#0E8H ;65536-11059200/115200/4=0FFE8H
MOV T3H,#0FFH
MOV T4T3M,#0AH
CLR BUSY
MOV WPTR,#00H
MOV RPTR,#00H
RET
UART3_SEND: