STC micro STC8A8K64D4 Series - Page 375

STC8A8K64D4 Series Manual
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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:
JB BUSY,$
SETB BUSY
MOV S3BUF,A
RET
UART3_SENDSTR:
CLR A
MOVC A,@A+DPTR
JZ SEND3END
LCALL UART3_SEND
INC DPTR
JMP UART3_SENDSTR
SEND3END:
RET
MAIN:
MOV SP, #5FH
MOV P0M0, #00H
MOV P0M1, #00H
MOV P1M0, #00H
MOV P1M1, #00H
MOV P2M0, #00H
MOV P2M1, #00H
MOV P3M0, #00H
MOV P3M1, #00H