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銆�銆�SBUF鏁�(sh霉)鎿�(j霉)绶╂矕瀵勫瓨鍣ㄩ�欐槸涓�鍊嬪彲浠ョ洿鎺ュ皨鍧�鐨勪覆琛屽彛灏堢敤瀵勫瓨鍣�銆傛湁鏈嬪弸閫欐ǎ鍟忚捣閬庘�滅偤浣曞湪涓茶鍙ｆ敹鐧�(f膩)涓紝閮藉彧鏄娇鐢ㄥ埌鍚屼竴鍊嬪瘎瀛樺櫒SBUF锛熻�屼笉鏄敹鐧�(f膩)鍚勭敤涓�鍊嬪瘎瀛樺櫒?锛佺潅宥婬涓奡BUF 鍖呭惈浜嗗叐鍊嬬崹绔嬬殑瀵勫瓨鍣紝涓�鍊嬫槸鐧�(f膩)閫佸瘎瀛�锛屽彟涓�鍊嬫槸鎺ユ敹瀵勫瓨鍣紝浣嗗畠鍊戦兘鍏卞悓浣跨敤鍚屼竴鍊嬪皨鍧�鍦板潃锛�99H銆侰PU 鍦ㄨ畝SBUF 鏅傛渻鎸囧埌鎺ユ敹瀵勫瓨鍣紝鍦ㄥ鏅傛渻鎸囧埌鐧�(f膩)閫佸瘎瀛樺櫒锛岃�屼笖鎺ユ敹瀵勫瓨鍣ㄦ槸闆欑珐娌栧瘎瀛樺櫒锛岄�欐ǎ鍙互閬垮厤鎺ユ敹涓柗娌掓湁鍙婃檪鐨勮闊挎噳锛屾暩(sh霉)鎿�(j霉)娌掓湁琚彇璧�锛屼笅涓�骞�鏁�(sh霉)鎿�(j霉)宸插埌渚�锛岃�岄�犳垚鐨勬暩(sh霉)鎿�(j霉)閲嶇枈鍟忛銆傜櫦(f膩)閫佸櫒鍓囦笉闇�瑕佺敤鍒伴洐绶╂矕锛屼竴鑸儏娉佷笅鎴戝�戝湪瀵櫦(f膩)閫佺▼搴忔檪涔熶笉蹇呯敤鍒扮櫦(f膩)閫佷腑鏂峰幓澶栫悊鐧�(f膩)閫佹暩(sh霉)鎿�(j霉)銆傛搷浣淪BUF瀵勫瓨鍣ㄧ殑鏂规硶鍓囧緢绨″柈锛屽彧瑕佹妸閫欏��99H 鍦板潃鐢ㄩ棞(gu膩n)閸靛瓧sfr瀹氱京鐐轰竴鍊嬭畩閲忓氨鍙互灏嶅叾閫茶璁�瀵搷浣滀簡锛屽sfr SBUF = 0x99;鐣剁劧浣犱篃鍙互鐢ㄥ叾瀹冪殑鍚嶇ū銆傞�氬父鍦ㄦ婧栫殑reg51.h 鎴朼t89x51.h 绛夐牠鏂囦欢涓凡灏嶅叾鍋氫簡瀹氱京锛屽彧瑕佺敤#include 寮曠敤灏卞彲浠ヤ簡銆�
銆�銆�SCON 涓茶鍙ｆ帶鍒跺瘎瀛樺櫒閫氬父鍦ㄨ姱鐗囨垨瑷�(sh猫)鍌欎腑鐐轰簡鐩�(ji膩n)瑕栨垨鎺у埗鎺ュ彛鐙�鎱�(t脿i)锛岄兘鏈冨紩鐢ㄥ埌鎺ュ彛鎺у埗瀵勫瓨鍣�銆係CON 灏辨槸51 鑺墖鐨勪覆琛屽彛鎺у埗瀵勫瓨鍣�銆傚畠鐨勫皨鍧�鍦板潃鏄�98H锛屾槸涓�鍊嬪彲浠ヤ綅灏嬪潃鐨勫瘎瀛樺櫒锛屼綔鐢ㄥ氨鏄洠(ji膩n)瑕栧拰鎺у埗51 鑺墖涓茶鍙ｇ殑宸ヤ綔鐙�鎱�(t脿i)銆�51 鑺墖鐨勪覆鍙ｅ彲浠ュ伐浣滃湪骞惧�嬩笉鍚岀殑宸ヤ綔妯″紡涓�锛屽叾宸ヤ綔妯″紡鐨勮ō(sh猫)缃氨鏄娇鐢⊿CON 瀵勫瓨鍣�銆傚畠鐨勫悇鍊嬩綅鐨勫叿楂斿畾缇╁涓嬶細
銆�銆�SM0 SM1 SM2 REN TB8 RB8 TI RI
銆�銆�SM0銆丼M1 鐐轰覆琛屽彛宸ヤ綔妯″紡瑷�(sh猫)缃綅锛岄�欐ǎ鍏╀綅鍙互灏嶆噳閫茶鍥涚ó妯″紡鐨勮ō(sh猫)缃�備覆琛屽彛宸ヤ綔妯″紡瑷�(sh猫)缃�銆�
銆�銆�SM0 SM1 妯″紡 鍔熻兘 娉㈢壒鐜�
銆�銆�0 0 0 鍚屾绉讳綅瀵勫瓨鍣� fosc/12
銆�銆�0 1 1 8浣峌ART 鍙畩
銆�銆�1 0 2 9浣峌ART fosc/32 鎴杅osc/64
銆�銆�1 1 3 9浣峌ART 鍙畩
銆�銆�鍦ㄩ�欓噷鍙鏄庢渶甯哥敤鐨勬ā寮�1锛屽叾瀹冪殑妯″紡涔熷氨涓�涓�鐣ラ亷锛屾湁鑸堣叮鐨勬湅鍙嬪彲浠ユ壘鐩搁棞(gu膩n)鐨勭‖浠惰硣鏂欐煡鐪嬨�傝〃涓殑fosc 浠ｈ〃鎸暕鍣ㄧ殑闋荤巼锛屼篃灏辨槸鏅舵尟鐨勯牷鐜�銆俇ART 鐐�(Universal Asynchronous Receiver锛夌殑鑻辨枃绺銆�
銆�銆�SM2 鍦ㄦā寮�2銆佹ā寮�3 涓偤澶氳檿鐞嗘閫氫俊浣胯兘浣�銆傚湪妯″紡0 涓姹傝┎浣嶇偤0銆�
銆�銆�REM 鐐哄厑瑷辨帴鏀朵綅锛孯EM 缃�1 鏅備覆鍙ｅ厑瑷辨帴鏀�锛岀疆0 鏅傜姝㈡帴鏀躲�俁EM 鏄敱杌熶欢缃綅鎴栨竻闆�銆傚鏋滃湪涓�鍊嬮浕璺腑鎺ユ敹鍜岀櫦(f膩)閫佸紩鑵砅3.0,P3.1 閮藉拰涓婁綅姗熺浉閫ｏ紝鍦ㄨ粺浠朵笂鏈変覆鍙ｄ腑鏂疯檿鐞嗙▼搴�锛岀暥瑕佹眰鍦ㄨ檿鐞嗘煇鍊嬪瓙绋嬪簭鏅備笉鍏佽ū涓插彛琚笂浣嶆渚嗙殑鎺у埗瀛楃鐢�(ch菐n)鐢熶腑鏂凤紝閭ｄ箞鍙互鍦ㄩ�欏�嬪瓙绋嬪簭鐨勯枊濮嬭檿鍔犲叆REM=0 渚嗙姝㈡帴鏀�锛屽湪瀛愮▼搴忕祼(ji茅)鏉熻檿鍔犲叆REM=1 鍐嶆鎵撻枊涓插彛鎺ユ敹銆傚ぇ瀹朵篃鍙互鐢ㄤ笂闈㈢殑瀵﹂殯婧愮⒓鍔犲叆REM=0 渚嗛�茶瀵﹂銆�
銆�銆�TB8 鐧�(f膩)閫佹暩(sh霉)鎿�(j霉)浣�8锛屽湪妯″紡2 鍜�3 鏄鐧�(f膩)閫佺殑绗�9 浣�銆傝┎浣嶅彲浠ョ敤杌熶欢鏍规摎(j霉)闇�瑕佺疆浣嶆垨娓呴櫎锛岄�氬父閫欎綅鍦ㄩ�氫俊鍗�(xi茅)璀颁腑鍋氬鍋朵綅锛屽湪澶氳檿鐞嗘閫氫俊涓�欎竴浣嶅墖鐢ㄤ簬琛ㄧず鏄湴鍧�骞�閭勬槸鏁�(sh霉)鎿�(j霉)骞�銆�
銆�銆�RB8 鎺ユ敹鏁�(sh霉)鎿�(j霉)浣�8锛屽湪妯″紡2 鍜�3 鏄凡鎺ユ敹鏁�(sh霉)鎿�(j霉)鐨勭9 浣�銆傝┎浣嶅彲鑳芥槸濂囧伓浣嶏紝鍦板潃/鏁�(sh霉)鎿�(j霉)妯欒瓨浣�銆傚湪妯″紡0 涓�锛孯B8 鐐轰繚鐣欎綅娌掓湁琚娇鐢�銆傚湪妯″紡1 涓�锛岀暥SM2=0锛孯B8 鏄凡鎺ユ敹鏁�(sh霉)鎿�(j霉)鐨勫仠姝綅銆�
銆�銆�TI 鐧�(f膩)閫佷腑鏂锋璀樹綅銆傚湪妯″紡0锛岀櫦(f膩)閫佸畬绗�8 浣嶆暩(sh霉)鎿�(j霉)鏅�锛岀敱纭欢缃綅銆傚叾瀹冩ā寮忎腑鍓囨槸鍦ㄧ櫦(f膩)閫佸仠姝綅涔嬪垵锛岀敱纭欢缃綅銆俆I 缃綅鍚庯紝鐢宠珛涓柗锛孋PU 闊挎噳涓柗鍚�锛岀櫦(f膩)閫佷笅涓�骞�鏁�(sh霉)鎿�(j霉)銆傚湪浠讳綍妯″紡涓嬶紝TI 閮藉繀闋堢敱杌熶欢渚嗘竻闄�锛屼篃灏辨槸瑾湪鏁�(sh霉)鎿�(j霉)瀵叆鍒癝BUF 鍚�锛岀‖浠剁櫦(f膩)閫佹暩(sh霉)鎿�(j霉)锛屼腑鏂烽熆鎳夛紙濡備腑鏂锋墦闁嬶級锛岄�欐檪TI=1锛岃〃鏄庣櫦(f膩)閫佸凡瀹屾垚锛孴I 涓嶆渻鐢辩‖浠舵竻闄わ紝鎵�浠ラ�欐檪蹇呴爤鐢ㄨ粺浠跺皪鍏舵竻闆�銆�
銆�銆�RI 鎺ユ敹涓柗妯欒瓨浣嶃�傚湪妯″紡0锛屾帴鏀剁8 浣嶇祼(ji茅)鏉熸檪锛岀敱纭欢缃綅銆傚叾瀹冩ā寮忎腑鍓囨槸鍦ㄦ帴鏀跺仠姝綅鐨勫崐涓枔锛岀敱纭欢缃綅銆俁I=1锛岀敵璜嬩腑鏂�锛岃姹侰PU 鍙栬蛋鏁�(sh霉)鎿�(j霉)銆備絾鍦ㄦā寮�1 涓�锛孲M2=1鏅�锛岀暥鏈敹鍒版湁鏁堢殑鍋滄浣�锛屽墖涓嶆渻灏峈I 缃綅銆傚悓妯I 涔熷繀闋堣闈犺粺浠舵竻闄ゃ�傚父鐢ㄧ殑涓插彛妯″紡1 鏄偝杓�10 鍊嬩綅鐨�锛�1 浣嶈捣濮嬩綅鐐�0,8 浣嶆暩(sh霉)鎿�(j霉)浣�锛屼綆浣嶅湪鍏堬紝1 浣嶅仠姝綅鐐�1銆傚畠鐨勬尝鐗圭巼鏄彲璁婄殑锛屽叾閫熺巼鏄彇姹轰簬瀹氭檪鍣�1 鎴栧畾鏅傚櫒2 鐨勫畾鏅傚�硷紙婧㈠嚭閫熺巼锛�銆侫T89C51 鍜孉T89C2051 绛�51 绯诲垪鑺墖鍙湁鍏╁�嬪畾鏅傚櫒锛屽畾鏅傚櫒0 鍜屽畾鏅傚櫒1锛岃�屽畾鏅傚櫒2鏄�89C52 绯诲垪鑺墖鎵嶆湁鐨�銆�
銆�銆�娉㈢壒鐜囧湪浣跨敤涓插彛鍋氶�氳▕鏅傦紝涓�鍊嬪緢閲嶈鐨勫弮鏁�(sh霉)灏辨槸娉㈢壒鐜�锛屽彧鏈変笂涓嬩綅姗熺殑娉㈢壒鐜囦竴妯ｆ檪鎵嶅彲浠ラ�茶姝ｅ父閫氳▕銆傛尝鐗圭巼鏄寚涓茶绔彛姣忕鍏�(n猫i)鍙互鍌宠几?sh霉)鐗熴剬鍖氱博?sh霉)銆傛湁涓�浜涘垵瀛哥殑鏈嬪弸瑾嶇偤娉㈢壒鐜囨槸鎸囨瘡绉掑偝杓�?sh霉)娣栨?ji茅)鏁�(sh霉)锛屽妯欐簴9600 鏈冭瑾よ獚鐐烘瘡绉掔ó鍙互鍌抽��9600鍊嬪瓧绡�(ji茅)锛岃�屽闅涗笂瀹冩槸鎸囨瘡绉掑彲浠ュ偝閫�9600 鍊嬩簩閫蹭綅锛岃�屼竴鍊嬪瓧绡�(ji茅)瑕�8 鍊嬩簩閫蹭綅锛屽鐢ㄤ覆鍙ｆā寮�1 渚嗗偝杓搁偅涔堝姞涓婅捣濮嬩綅鍜屽仠姝綅锛屾瘡鍊嬫暩(sh霉)鎿�(j霉)瀛楃瘈(ji茅)灏辫鍗犵敤10 鍊嬩簩閫蹭綅锛�9600 娉㈢壒鐜囩敤妯″紡1 鍌宠几鏅�锛屾瘡绉掑偝杓�?sh霉)娣栨?ji茅)鏁�(sh霉)鏄�9600梅10=960 瀛楃瘈(ji茅)銆�51 鑺墖鐨勪覆鍙ｅ伐浣滄ā寮�0鐨勬尝鐗圭巼鏄浐瀹氱殑锛岀偤fosc/12锛屼互涓�鍊�12M 鐨勬櫠鎸締瑷堢畻锛岄偅涔堝畠鐨勬尝鐗圭巼鍙互閬斿埌1M銆傛ā寮�2 鐨勬尝鐗圭巼鏄浐瀹氬湪fosc/64 鎴杅osc/32锛屽叿楂旂敤閭ｄ竴绋氨鍙栨焙浜嶱CON 瀵勫瓨鍣ㄤ腑鐨凷MOD浣�锛屽SMOD 鐐�0锛屾尝鐗圭巼鐐篺ocs/64,SMOD 鐐�1锛屾尝鐗圭巼鐐篺ocs/32銆傛ā寮�1 鍜屾ā寮�3 鐨勬尝鐗圭巼鏄彲璁婄殑锛屽彇姹轰簬瀹氭檪鍣�1 鎴�2锛�52 鑺墖锛夌殑婧㈠嚭閫熺巼銆傞偅涔堟垜鍊戞�庝箞鍘昏▓绠楅�欏叐鍊嬫ā寮忕殑娉㈢壒鐜囪ō(sh猫)缃檪鐩搁棞(gu膩n)鐨勫瘎瀛樺櫒鐨勫�煎憿锛熷彲浠ョ敤浠ヤ笅鐨勫叕寮忓幓瑷堢畻銆�
銆�銆�娉㈢壒鐜�=锛�2SMOD梅32锛壝楀畾鏅傚櫒1 婧㈠嚭閫熺巼
銆�銆�涓婂紡涓瑷�(sh猫)缃簡PCON 瀵勫瓨鍣ㄤ腑鐨凷MOD 浣嶇偤1 鏅傚氨鍙互鎶婃尝鐗圭巼鎻愬崌2 鍊�銆傞�氬父鏈冧娇鐢ㄥ畾鏅傚櫒1 宸ヤ綔鍦ㄥ畾鏅傚櫒宸ヤ綔妯″紡1涓�锛岄�欐檪瀹氭檪鍊间腑鐨凾L1 鍋氱偤瑷堟暩(sh霉)锛孴H1 鍋氱偤鑷嫊閲嶈鍊� 锛岄�欏�嬪畾鏅傛ā寮忎笅锛屽畾鏅傚櫒婧㈠嚭鍚庯紝TH1 鐨勫�兼渻鑷嫊瑁濊級鍒癟L1锛屽啀娆￠枊濮嬭▓鏁�(sh霉)锛岄�欐ǎ鍙互涓嶇敤杌熶欢鍘诲共闋�锛屼娇寰楀畾鏅傛洿婧栫⒑銆傚湪閫欏�嬪畾鏅傛ā寮�1涓嬪畾鏅傚櫒1 婧㈠嚭閫熺巼鐨勮▓绠楀叕寮忓涓嬶細
銆�銆�婧㈠嚭閫熺巼=锛堣▓鏁�(sh霉)閫熺巼锛�/(256锛峊H1)
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