STC micro STC8A8K64D4 Series - Page 408

STC8A8K64D4 Series Manual
- 392 -
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 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 T2L,#0E8H ;65536-11059200/115200/4=0FFE8H
MOV T2H,#0FFH
MOV AUXR,#15H
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