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;此程序在硬件上測試通過
;2007-05-27
;附有簡化電路圖
;為了使初學(xué)者能看懂，程序與圖盡可能的簡單扼要

;實驗現(xiàn)象為，發(fā)送端的P1口的哪個鍵被接下，接收端的哪個燈對應(yīng)著亮
;如果把兩個單片機(jī)的T和R通過無線模塊（如基于MCP2120芯片的模塊）來擴(kuò)充，便可做成無線通信
                    ORG                 0000H
                    AJMP                START
                    ORG                 0040H
START:
                    MOV                 SP,#60H       
                    MOV                 SCON,#50H                   ;串口 方式 1
                    MOV                 TMOD,#20H                   ;T1 方式2

                    MOV                 TL1,#0FDH                   ;波特率 9600 的常數(shù)
                    MOV                 TH1,#0FDH
                    SETB                TR1  
                    MOV                 r5,#00h                   
WAIT:
                    MOV               p1,#0ffh
                    MOV               a ,p1
                    MOV               r5,a
                    lcall delay                      ;讀鍵盤，這里去抖動，還要加幾句話
                    MOV               a ,p1
                     nop
                    CJNE                A,5,WAIT                ;是否有鍵輸入
                    MOV                 SBUF,a                      ;串口輸出鍵盤輸入的值
                    NOP
SS:                 JBC                 TI,WAIT                     ;是否發(fā)送完畢
                    SJMP                SS
DELAY:                                      ;延時子程序
                    PUSH                0                           ;保存現(xiàn)場
                    PUSH                1
                    MOV                 0,#06H
DELAY1: MOV                 1,#0H
                    DJNZ                1,$
                    DJNZ                0,DELAY1
                    POP                 1                           ;恢復(fù)現(xiàn)場
                    POP                 0
                    RET
                    END

;系統(tǒng)晶振是 11.0592 MHz
;51單片機(jī)接收單片機(jī)程序
;此程序用Proteus仿真通過

;此程序在硬件上測試通過
;2007-05-27
;附有簡化電路圖
;為了使初學(xué)者能看懂，程序與圖盡可能的簡單扼要

;實驗現(xiàn)象為，發(fā)送端的P1口的哪個鍵被接下，接收端的哪個燈對應(yīng)著亮
;如果把兩個單片機(jī)的T和R通過無線模塊（如基于MCP2120芯片的模塊）來擴(kuò)充，便可做成無線通信
                    ORG                 0000H
                    AJMP                START
                    ORG                 0040H
START:       
                    MOV                 SCON,#50H                   ;串口 方式 1
                    MOV                 TMOD,#20H                   ;T1 方式 2

                    MOV                 TL1,#0FDH                   ;波特率 9600 的常數(shù)
                    MOV                 TH1,#0FDH
                    SETB                TR1          
                   WAIT:
                    JBC                 RI,DIS_REC                  ;是否接收到數(shù)據(jù)       
                    sjmp                wait
DIS_REC:
                    MOV                 A,SBUF                      ;讀串口接收到的數(shù)據(jù)        
                    MOV                 p1,a
                    SJMP                wait
                    end