參數(shù)資料
型號(hào): S3P1860-DK
元件分類(lèi): 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDIP20
封裝: 0.300 INCH, DIP-20
文件頁(yè)數(shù): 80/95頁(yè)
文件大?。?/td> 339K
代理商: S3P1860-DK
REMOTE CONTROL TX. APPLICATION NOTE
S3C1840/C1850/C1860/P1860
7-24
PORT0
MOV
L,#N_INP0
; setting at N_INP0
MOV
@HL,A
;
MOV
L,#ODH
;
SETB
P2.(L)
;
IN
A,P0
;
MOV
L,A
;
CPNE
L,#0FH
;
JP
DBKEY
; If also port1 input a key,
; it is double key
MOV
L,#N_INP1
; Only N_INP0 input
MOV
@HL+,#0FH
; but N_INP1 is set to #0fh
MOV
L,#N_INP0
;
MOV
L,@HL
;
CALLL
KEYCHEK
;
ADDS
A,#1
;
JP
DBKEY
; if overflow occurs, it is double key
DECS
A
; because input value ranges
MOV
L,#N_INP0
; from #0 to #3
MOVZ
@HL,A
; N_INP0
← A
JPL
DBCOMP
;;; select port1 ---------------------------------
PORT1
MOV
L,#0DH
SETB
P2.(L)
IN
A,P0
MOV
L,A
CPNE
L,#0FH
; is key pressed in port 1?
JP
.+3
JPL
NORMAL
; no key, go to NORMAL
MOV
L,#N_INP0
; setting N_INP0 to #0fh
MOV
@HL+,#0FH
; Only N_INP1 input
MOV
L,#N_INP1
;
MOV
@HL,A
;
MOV
L,A
; L
← N_INP1
CALLL
KEYCHEK
ADDS
A,#1
; if overflow occurs, go to double key
JP
DBKEY
;
DECS
A
; because input value ranges from
#0 to #3
MOV
L,#N_INP1
; N_INP1
← A
MOVZ
@HL,A
JPL
DBCOMP
;;; if double key occurs, go to reset ---------------------------------
DBKEY
JPL
RESET
;
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