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《《暗號門鈴》ppt課件》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、暗號門鈴第10課——完成暗號門鈴的開發(fā)簡單任務(wù)模仿簡易暗號門鈴硬件連接簡易暗號門鈴軟件編寫知識點講解可擴展任務(wù)模仿復(fù)雜暗號門鈴的開發(fā)任務(wù)要求：制作一個簡易暗號門鈴：按兩下按鈕后，門鈴響起。硬件連接軟件編寫軟件編寫longstate;floattonelist[7]={1046.5,1174.7,1318.5,1396.9,1568,1760,1975.5};voidplay(){tone(10,tonelist[(int)(2)]);delay(500);tone(10,tonelist[(int)(0)]);delay(500);}voidattac
2、hInterrupt_fun_2(){state=state+1;}軟件編寫voidsetup(){state=0;pinMode(10,OUTPUT);pinMode(2,INPUT);}voidloop(){attachInterrupt(0,attachInterrupt_fun_2,RISING);if(state==2){play();state=0;}else{noTone(10);}}任務(wù)要求：在暗號門鈴的基礎(chǔ)上改進：一秒內(nèi)按兩下門鈴響。硬件連接軟件編寫軟件編寫longbtnstate;longstate;longchangetime;f
3、loattonelist[7]={1046.5,1174.7,1318.5,1396.9,1568,1760,1975.5};voidplay(){tone(10,tonelist[(int)(2)]);delay(500);tone(10,tonelist[(int)(0)]);delay(500);state=0;}voidattachInterrupt_fun_2(){btnstate=1;}軟件編寫voidsetup(){btnstate=0;state=0;changetime=0;pinMode(10,OUTPUT);pinMode(2,I
4、NPUT);Serial.begin(9600);}軟件編寫voidloop(){attachInterrupt(0,attachInterrupt_fun_2,RISING);if(btnstate){delay(50);state=state+1;Serial.println(state);btnstate=0;changetime=millis();}if(millis()-changetime>1000){state=0;}if(state==2)play();elsenoTone(10);}如何設(shè)計更好的暗號門鈴？好記憶難破解防干擾……
