STC micro STC8A8K64D4 Series - Page 416

STC8A8K64D4 Series Manual
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LJMP MAIN
ORG 0023H
LJMP UART_ISR
ORG 0100H
UART_ISR:
PUSH ACC
PUSH PSW
MOV PSW,#08H
JNB TI,CHKRI
CLR TI
CLR BUSY
CHKRI:
JNB RI,UARTISR_EXIT
CLR RI
MOV A,WPTR
ANL A,#0FH
ADD A,#BUFFER
MOV R0,A
MOV @R0,SBUF
INC WPTR
UARTISR_EXIT:
POP PSW
POP ACC
RETI
UART_INIT:
MOV SCON,#50H
MOV TMOD,#20H
MOV TL1,#0FDH ;256-11059200/115200/32=0FDH
MOV TH1,#0FDH
SETB TR1
MOV AUXR,#40H
CLR BUSY
MOV WPTR,#00H
MOV RPTR,#00H
RET
UART_SEND:
JB BUSY,$
SETB BUSY
MOV SBUF,A
RET
UART_SENDSTR:
CLR A
MOVC A,@A+DPTR
JZ SENDEND
LCALL UART_SEND
INC DPTR
JMP UART_SENDSTR
SENDEND:
RET
MAIN:
MOV SP, #5FH