STC micro STC8A8K64D4 Series - Page 420

STC8A8K64D4 Series Manual
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P5M1 DATA 0C9H
P5M0 DATA 0CAH
ORG 0000H
LJMP MAIN
ORG 0043H
LJMP UART2_ISR
ORG 0100H
UART2_ISR:
PUSH ACC
PUSH PSW
MOV PSW,#08H
MOV A,S2CON
JNB ACC.1,CHKRI
ANL S2CON,#NOT 02H
CLR BUSY
CHKRI:
JNB ACC.0,UART2ISR_EXIT
ANL S2CON,#NOT 01H
MOV A,WPTR
ANL A,#0FH
ADD A,#BUFFER
MOV R0,A
MOV @R0,S2BUF
INC WPTR
UART2ISR_EXIT:
POP PSW
POP ACC
RETI
UART2_INIT:
MOV S2CON,#10H
MOV T2L,#0E8H ;65536-11059200/115200/4=0FFE8H
MOV T2H,#0FFH
MOV AUXR,#14H
CLR BUSY
MOV WPTR,#00H
MOV RPTR,#00H
RET
UART2_SEND:
JB BUSY,$
SETB BUSY
MOV S2BUF,A
RET
UART2_SENDSTR:
CLR A
MOVC A,@A+DPTR
JZ SEND2END
LCALL UART2_SEND
INC DPTR
JMP UART2_SENDSTR
SEND2END:
RET