課程設(shè)計-單片機(jī)串口與紅外雙機(jī)通信設(shè)計-預(yù)覽頁
【正文】 年 月 日摘 要 利用所學(xué)的模電，數(shù)電，51單片機(jī)的知識，用c語言實(shí)現(xiàn)兩塊單片機(jī)板子的通信，通過部分模塊集成如：最小系統(tǒng)，鍵盤設(shè)計，顯示設(shè)計，串口設(shè)計，紅外設(shè)計，軟件設(shè)計，延時子程序設(shè)計，鍵盤設(shè)計，顯示軟件設(shè)計，串口軟件設(shè)計，紅外軟件設(shè)計，實(shí)現(xiàn)串口和紅外的通信。 在許多基于單片機(jī)的應(yīng)用系統(tǒng)中，系統(tǒng)需要實(shí)現(xiàn)遙控功能，而紅外通信則是被采用較多的一種方法。紅外線接口是使用有方向性的紅外線進(jìn)行通訊，由于它的波長較短，對障礙物的衍射能力差，所以只適合于短距離無線通訊的場合，進(jìn)行點(diǎn)對點(diǎn)的直線數(shù)據(jù)傳輸，因此在小型的移動設(shè)備中獲得了廣泛的應(yīng)用?？臻e方式停止CPU的工作，但允許RAM，定時/計數(shù)器，串行通信口及中斷系統(tǒng)繼續(xù)工作。 由于單片機(jī)等CPU的數(shù)據(jù)／地址／控制總線端口都有一定的負(fù)載能力，如果負(fù)載超過其負(fù)載能力，一般應(yīng)加驅(qū)動器。每一個D輸入的狀態(tài)將在時鐘脈沖上升沿之前的一段就緒時間內(nèi)被傳輸?shù)接|發(fā)器對應(yīng)的輸出（Qn）上。（2）限流電阻計算：數(shù)碼管的工作電壓為UＤ（手冊數(shù)據(jù)），工作電流為I（手冊數(shù)據(jù)），譯碼器輸出的高電平Ua~g，則限流電阻上的電壓應(yīng)該為U－UＤ，限流電阻阻值： R?。剑║a~g－UＤ）／I（3）高電平點(diǎn)亮數(shù)碼管，顯示數(shù)字0 ~ 9。i++)。 temp = key_addr amp。 if(temp==0x0b)key_n=9。 temp = key_addr amp。 if(temp==0x0b)key_n=10。 temp = key_addr amp。 if(temp==0x0b)key_n=11。temp = key_addr amp。 if(temp==0x0b)key_n=12。 } include unsigned char code Tab[ ]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f, 0x77,0x7c,0x39,0x5e,0x79,0x71}。 TI=0。m++) for(n=0。 TMOD=0x20。 //515us定時 TL1=0xfd。 delay()。 delay()。 while(RI==0) 。}void main(void){ TMOD=0x20。 TL1=0xfd。 reg_code=0x80。 while(TI==0) 。 void carry(void){ TMOD=0x01。 TF0=0。 P11=~P11。 for(m=0。n++) 。//串口模式1，接受禁止 PCON=0x00。 while(1) { if(P32==0) { delay()。 Send(Tab[i])。 if(i==16)i=0。只有熟悉編程，才能成功實(shí)現(xiàn)功能。 your employer dismisses you and you think that you have been dismissed unfairly.For more information about dismissal and unfair dismissal, seeagainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal.Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed undert charge you more than 35% of your pensation To find your nearest CAB, including those that give advice by , click ons 150th anniversary celebrations and will attend City39。for the racist behaviour of their fans durings actions.CSKA said they were surprised and disappointed by Toure39?？傆X得自己自己似乎應(yīng)該去做點(diǎn)什么，或者寫點(diǎn)什么。t really grow up, it seems is not so important。Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來，這個世界上，對某個事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅決，還有，時間。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時候是最后又打起了退堂鼓。 Those were broken into various shapes of stationery。突然想到那件藍(lán)格子襯衫；那些被折成各種各樣形狀的信紙；那段從街角深巷伊始的友誼；還有那場還沒有開始就宣告了終結(jié)的邂逅計劃……那些年那些天的非做不可，終于和青春一樣，都將在我們的人生中謝幕。t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).cause there第22頁
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