CAN接口汇编程序
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CJNE A,#OAAH,CAN_CM_QUIT
MOV A,#055H
MOV X @DPTR,A
MOV X A,@DPTR
CJNE A,#055H,CAN_CM_QUIT
CLR A
MOV X @DPTR,A
CLR F0
CAN_CM_QUIT:
RET
CAN_ENTER_RETMODEL:
MOV DPTR,#REG_CONTROL
MOV X A,@DPTR
ORL A,#01H
MOV X @DPTR,A
CLR DWF0
MOV X DWA,@DPTR
JB ACC.0,CAN_ER_QUIT
SETB F0
CAN_ER_QUIT:
RET
CAN-QUIT-RETMODEL:
MOV DPTR,#REG_CONTROL
MOV X A,@DPTR
ANL A,#OFEH
MOV X @DPTR,A
CLR F0
MOV X A,@DPTR
JNB ACC. 0,CAN_QR_QUIT
SETB F0
CAN_QR_QUIT:
RET
CAN_SET_BANDRATE:
MOV A,R7
CLR CY
SUBB A,#13
SETB F0
JNC CAN_SETBR_QUIT
CLR F0
MOV A,R7
RL A
MOV DPTR,#CAN SETBR
MOV C A,@A+DPTR
MOV R5,A
MOV A,R7
RL A
INC A
MOV C A,@A+DPTR
MOV R6,A
MOV DPTR,# REGLBTR0
MOV A,R5
MOV X . DPTR,A
SETB F0
MOV X A,QDPTR
XRL A,R5
JNZ CAN_SETBR_QUIT
INC DPTR
MOV A,R6
MOV X @DPTR,A
MOV X A,@DPTR
XRL A,R6
JNZ CAN_SETBR_QUIT
CLR F0
CAN_SETBR_QUIT:
RET
CAN_SETBR:
DB 0EFH,0FFH
DB 0D7H,0FFH
DB 0CBH,0FFH
DB 0C5H,0FFH
DB 0C9H,0A9H
DB 0C2H,0FFH
DB 84H,0A7H
DB 82H,025H
DB 01H,045H
DB 01H,025H
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本文关键字：接口 51单片机，单片机-工控设备 - 51单片机
