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瑷�(j矛)绠楁(j墨)鐨勭暟姝ラ€氫俊鎺ュ彛鐐篒NTEL8251A锛屽畠鍙ō(sh猫)瀹�1浣�銆�1.5浣嶆垨2浣嶅仠姝綅锛屾暩(sh霉)鎿�(j霉)鍙湪5鍒�8浣嶄箣闁撻伕鎿�锛岄€氫俊闋荤巼鐐�0鍒�9600bps锛屾湁濂囧伓鏍¢(y脿n)銆佸箑鏍¢(y脿n)銆佹孩鍑烘牎椹�(y脿n)涓夌ó鏂瑰紡銆傚彲閫氶亷(gu貌)灏�(du矛)瀹冨(xi臎)鍏ヤ竴瀹氱殑鏂瑰紡鎺у埗瀛�銆佸懡浠ゆ帶鍒跺瓧寰炶€岄€�(j矛n)琛屽垵濮嬪寲銆傚畠鐨勫伐浣滅媭鎱�(t脿i)瀵勫瓨浜庣媭鎱�(t脿i)瀵勫瓨鍣ㄤ腑锛屽彲鐢盤89C51RD2鐨� CPU璁€鍙�銆傞€氫俊鍗�(xi茅)璀板涓嬶細锛�1锛変覆琛岄€氫俊娉㈢壒鐜囩偤9600bps锛涳紙2锛夊箑鏍煎紡鐐�8浣嶆暩(sh霉)鎿�(j霉)浣嶏紝涓€浣嶈捣濮嬩綅锛屼竴浣嶅彲绶ㄧ▼鐨勭9浣嶏紙鍗崇櫦(f膩)閫佸拰鎺ユ敹鐨勫湴鍧€/鏁�(sh霉)鎿�(j霉)浣嶇殑妯�(bi膩o)蹇椾綅锛夛紝涓€浣嶅仠姝綅锛涳紙3锛変富姗�(j墨)鍜屽緸姗�(j墨)閬靛惊涓诲緸鍘熷墖锛屼富姗�(j墨)鐢ㄥ懠鍙柟寮忛伕鎿囧緸姗�(j墨)锛屾暩(sh霉)鎿�(j霉)鍦ㄤ富姗�(j墨)鍜屽緸姗�(j墨)涔嬮枔闆欏悜鍌抽仦锛屽悇寰炴(j墨)涔嬮枔鐨勭浉浜掗€氫俊闇€閫氶亷(gu貌)涓绘(j墨)浣滅偤涓粙锛涳紙4锛変富寰炴(j墨)涔嬮枔閭勬噳(y墨ng)鍌抽€佷竴浜涗緵瀹冨€戣瓨(sh铆)鍒ョ殑鍛戒护鍜岀媭鎱�(t脿i)瀛楋紝濡備互00H琛ㄧず涓绘(j墨)鐧�(f膩)閫佸緸姗�(j墨)鎺ユ敹鍛戒护锛屼互01H琛ㄧず寰炴(j墨)鐧�(f膩)閫佷富姗�(j墨)鎺ユ敹鍛戒护绛夈€�
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1锛� 鍠墖姗�(j墨)閮ㄥ垎
鍠墖姗�(j墨)绔▼搴忓湪KEIL 鍏徃鎻愪緵鐨勫劒(y艒u)绉€鍙鍖栭泦鎴愰枊(k膩i)鐧�(f膩)鐠�(hu谩n)澧僽VISION2涓敤C瑾�(y菙)瑷€绶ㄥ(xi臎)銆傞€氫俊娉㈢壒鐜�9600bps锛屾櫠鎸�11.0592Mhz銆傞渶瑕佹敞鎰忕殑鏄疨HILIPS P89C51RD2鐨�1鍊�(g猫)姗�(j墨)鍣ㄥ懆鏈熺偤6鍊�(g猫)鏅�(sh铆)閻樺懆鏈�锛岃垏妯�(bi膩o)婧�(zh菙n)8051鍠墖姗�(j墨)1鍊�(g猫)姗�(j墨)鍣ㄥ懆鏈熺偤12鍊�(g猫)鏅�(sh铆)閻樺懆鏈熶笉鍚�锛屽洜姝�锛屽湪鐩搁棞(gu膩n)鍙冩暩(sh霉)瑷�(sh猫)缃檪(sh铆)瑕佹敞鎰忛€欎竴宸垾锛屽惁鍓囷紝鐒�(w煤)娉曟纰哄缓绔嬮€氫俊閫f帴銆傜偤閰嶅悎澶氭(j墨)閫氫俊鏂瑰紡锛屾垜鍊戦噰鐢ㄥ伐浣滄柟寮�3.
鍠墖姗�(j墨)閫氫俊娴佺▼鍦栧鍦栦簩鎵€绀�銆�
鍠墖姗�(j墨)涓插彛鍒濆鍖栫▼搴忓涓嬶細
main锛� 锛�
锝� TMOD = 0x20;
/锛婂畾鏅�(sh铆)鍣�1鏂瑰紡2锛�/
TH1=0xfa;
/锛�9600娉㈢壒鐜囨櫠鎸�11.0592MHz锛�/
TCON=0x40;
/锛婂暉鍕�(d貌ng)瀹氭檪(sh铆)鍣�1锛�/
SCON=0x50;
/锛婂厑瑷辨帴鏀讹紛/
IE=0x90;
/锛婂厑瑷变覆琛屽彛涓柗锛�/
鈥︹€︹€�..

2锛庤▓(j矛)绠楁(j墨)閮ㄥ垎
瑷�(j矛)绠楁(j墨)绔▼搴忔垜鍊戦噰鐢ㄥ劒(y艒u)绉€鐨勫彲瑕栧寲杌熶欢Visual Basic绶ㄥ(xi臎)锛屽叾涓棞(gu膩n)閸甸儴鍒嗘槸寮曠敤Visual Basic鐨勪覆琛岄€氫俊鎺т欢MSComm锛岀櫦(f膩)閫佸拰鎺ユ敹瀹屽叏鐢辫┎鎺т欢绠$悊瀵�(sh铆)鐝�(xi脿n)锛岃€屼笉闇€瑕佷互寰€绻佺懀鐨勯﹨(q奴)鍕�(d貌ng)绋嬪簭绶ㄥ(xi臎)銆傞€欑劇(w煤)鐤戝ぇ澶ф彁楂樹簡宸ヤ綔鏁堢巼锛岄檷浣庝簡闁�(k膩i)鐧�(f膩)鎴愭湰銆�
瑷�(j矛)绠楁(j墨)閫氫俊娴佺▼濡傚湒涓夋墍绀�銆�
涓嬮潰绲﹀嚭鐢╒B6绶ㄥ埗鐨勯€氫俊绋嬪簭锛�
Dim銆€inbyte锛� 锛� AS Byte 鈥欏畾缇╁嫊(d貌ng)鎱�(t脿i)瀛楃瘈(ji茅)鍨嬫暩(sh霉)绲�
Private Sub txd_click锛� 锛� 鈥欓€氫俊寤虹珛鍙婃暩(sh霉)鎿�(j霉)鐧�(f膩)閫佹帶鍒舵寜閳�
If MSComm1.PortOpen = True Then GoTo jj
濡傞€氫俊绔彛闁�(k膩i)鍓囪烦鑷砵j
MSComm1.CommPort = 1
鈥欓€氫俊绔彛鐐篊OM1
MSComm1.Settings = "9600,n,8,1"
鈥欎覆鍙e垵濮嬪寲鐐�9600娉㈢壒锛�8浣嶆暩(sh霉)鎿�(j霉)浣�锛�1浣嶅仠姝綅锛岀劇(w煤)鏍¢(y脿n)
MSComm1.PortOpen = True
鈥欐墦闁�(k膩i)閫氫俊绔彛
jj: Mscomm1.output=Text1.text
鈥欑櫦(f膩)閫佸湴鍧€纰�
鈥︹€︹€�..
Mscomm1.output=text2.text 鈥欑櫦(f膩)閫佸伐浣滄柟寮忔帶鍒跺瓧锛岄噰闆嗛€氶亾浠ュ強鏍¢(y脿n)纰�
End Sub
Private Sub rxd_click锛堬級 鈥欐暩(sh霉)鎿�(j霉)鎺ユ敹鎸夐垥
Inbyte锛� 锛�=Mscomm1.input 鈥欐帴鏀剁殑鏁�(sh霉)鎿�(j霉)瀛樹簬鍕�(d貌ng)鎱�(t脿i)瀛楃瘈(ji茅)鏁�(sh霉)绲�
鈥︹€�. 鈥欑渷鐣ユ暩(sh霉)鎿�(j霉)铏曠悊閮ㄥ垎
End Sub
浜�銆佺祼(ji茅)鏉熻獮(y菙)
鍒╃敤RS -485涓茶閫氫俊锛屽彲浠ヤ繚璀夊揩閫�銆佺┅(w臎n)瀹�銆侀仩(yu菐n)璺濋洟鍌抽€佹暩(sh霉)鎿�(j霉)銆傛湰鏂囪ō(sh猫)瑷�(j矛)鐨勭郴绲�(t菕ng)宸插湪鏅鸿兘鏁�(sh霉)鎿�(j霉)閲囬泦缍�(w菐ng)绲�(lu貌)鍎€琛ㄤ腑寰楀埌鎴愬姛鎳�(y墨ng)鐢�锛屽叾閫氫俊瑷�(sh猫)瑷�(j矛)鏂规硶閭勫彲浠ョ◢鍔犱慨鏀瑰嵆鍙Щ妞嶅埌鍏朵粬鐨勫伐妤�(y猫)娓�(c猫)鎺х郴绲�(t菕ng)涓€傜敱浜庢湰鏂囪ō(sh猫)瑷�(j矛)鏂规硶闁�(k膩i)鐧�(f膩)鎴愭湰浣�锛岃ō(sh猫)瑷�(j矛)绨�(ji菐n)鍠�锛屽湪鐩墠鍙婁互鍚庣殑宸ユキ(y猫)鎺у埗鍜屽叾浠栨柟闈㈠繀灏囧緱鍒拌秺渚�(l谩i)瓒婂鐨勬噳(y墨ng)鐢�銆�