參數(shù)資料
型號: S3P1860-DK
元件分類: 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
文件頁數(shù): 77/95頁
文件大?。?/td> 339K
代理商: S3P1860-DK
REMOTE CONTROL TX. APPLICATION NOTE
S3C1840/C1850/C1860/P1860
7-22
PRTSET
CLR
A
;
ADDS
A,#0FH
; high all the output ports
OUT
P3,@SL+A
; (P3, P2.2-P2.5)
MOV
L,#5
;
SETB
P2.(L)
;
DECS
L
;
CPNE
L,#1
; If P2.0 is high, data Tx.
JP
.- 3
; and auto reset counter clear
RET
DELAYP0
MOV
H #0
; for the match of delay time
MOV
H #0
;
MOV
H #0
;
MOV
H #0
;
MOV
H #0
;
MOV
H #0
;
J_MAIN
JPL
MAIN
;
;*********************************************
ORG
0000H
JPL
RESET
;*********************************************
MAIN
MOV
H,#0
; H regisster selects file #0
; useful when continous pulse Tx.
;
CALLL
PRTSET
; high all the output ports
;;; initial useful variable in main routine ------------------------------------
MOV
L,#N_OUTP
; N_OUTP
← #0
MOV
@HL+,#0
;
MOV
L,#1_TWICE
; I_TWICE (double increment)
← #1
MOV
@HL+,#1
;
MOV
L,#KFLG
; KFLG
← #0 (input key flag)
MOV
@HL+,#0
;
;; select output pin by one and one ---------------------------------
STROBE
MOV
L,#N_OUTP
CPBT
@HL.2
; If N_OUTP.2 is set, go to parall (parallel port)
JP
PARALL
; otherwise, go to serial (serial port)
SERIAL
MOV
L,@HL
;
INCS
L
;
SETB
P2.(L)
; low P2.2-P2.5
INCS
L
;
CLRB
P2.(L)
;
JPL
KEYIN
PARALL
MOV
L,#5
; high P2.5
SETB
P2.(L)
;
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