BLE on React Native - Speaker Deck

BLE on React Native

by januswel

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BLE ON REACT NATIVE REACT NATIVE MEETUP #7 2018/01/22 BY JANUSWEL

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About speaker KBOVTXFM TPGUXBSFFOHJOFFS !$VSF"QQ

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CO checker

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What is CO checker? "EFWJDFUPNFBTVSFDPODFOUSBUJPOTPG$0JOUIF CSFBUI 5IFNFBTVSFEWBMVFTBSFJNQPSUBOUJOEFYUPDVSF OJDPUJOFBEEJDUJPO #VUFYJTUJOHQSPEVDUTBSFWFSZFYQFOTJWF TPEFWJDFT BSFFRVJQQFEJOPOMZIPTQJUBMTDMJOJDT 8FEFDJEFEUPQSPEVDFBOEEJTUSJCVUFEFWJDFTUP QBUJFOUT

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Layout 3FBE8SJUF $0WBMVFT 4VCNJU $0WBMVFT

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Layout 3FBE8SJUF $0WBMVFT 4VCNJU $0WBMVFT 5PEBZ`TUPQJD

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In CureApp… 8FXPSLFEXJUIIBSEXBSFWFOEPS IBSEXBSFEFTJHO pSNXBSFEFWFMPQNFOU $VSF"QQJTSFTQPOTJCMFGPSUIFTPGUXBSFPG TNBSUQIPOFEFWFMPQNFOU

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BLE chips $IPPTFPOFGSPNGPMMPXJOHDBUBMPH IUUQTGBCLVSBHJUCPPLTJPCMFEPDT DPOUFOUNPEVMFIUNM 6TFDIJQTIBWFDFSUJpDBUJPOPGDPNQMJBODF XJUIUFDIOJDBMTUBOEBSET l&WBMVBUJPOCPBSEzTBSFUIFCFTUDIPJDFUPHFU TUBSUFE

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BLE scanners "OESPJE#-&4DBOOFS IUUQTQMBZHPPHMFDPNTUPSFBQQTEFUBJMT JEDPNNBDEPNCMFCMFTDBOOFSIMKB J04#-&YQMS IUUQTJUVOFTBQQMFDPNKQBQQCMFYQMS JE NU

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Module to use BLE SFBDUOBUJWFCMFNBOBHFS IUUQTHJUIVCDPNJOOPWFJUSFBDUOBUJWF CMFNBOBHFS SFBDUOBUJWFCMFJTOPUNBJOUBJOFEOPMPOHFS

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Words $FOUSBM %FWJDFTUPVTFTFSWJDFT 4FFBTDMJFOUTJODMJFOUTFSWFSNPEFM 1FSJQIFSBM %FWJDFTUPQSPWJEFTFSWJDFT 4FFBTTFSWFSTJODMJFOUTFSWFSNPEFM

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Words $IBSBDUFSJTUJD 4UPSFUP3FBE8SJUFWBMVFT #POEJOH 'FBUVSFTGPSTFDVSJUZ "WBJMBCMF&ODSZQUJPO"VUIFOUJDBUJPO "MTPDBMMFEBTl1BJSJOHz

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Read Peripheral Central

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Write Peripheral Central

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Notify Peripheral Central

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Indicate Peripheral Central

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Steps to communicate 4FFEPDVNFOUTPGSFBDUOBUJWFCMFNBOBHFS 4DBOQFSJQIFSBM T $POOFDUUPBEJTDPWFSFEQFSJQIFSBM 3FBE8SJUF/PUJGZ*OEJDBUF

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CureApp Use Case 3FBE $0DIBSBDUFSJTUJD XJUIFODSZQUJPO Peripheral Central

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React Integration 8FVTF&WFOU&NJUUFS IUUQTHJUIVCDPNBTZODMZ&WFOU&NJUUFS &NJUUJOHFWFOUTXIFO 4DBOOJOHQFSJQIFSBMTJTEPOF 3FBEJTEPOFGSPNQFSJQIFSBMT FUDʜ

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React Integration 4FUFWFOUIBOEMFSTJO3FBDUDPNQPOFOU DPNQPOFOU%JE.PVOU $POTVNFFWFOUTXJUITFU4UBUF3FEVYBDUJPOT JOFWFOUIBOEMFST

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1 class BleManager extends EventEmitter2 { 2 startScanning() { /* snip */ } 3 connectToPeripheral() { /* snip */ } 4 async readCharacteristic() { /* snip */ } 5 async startMeasuring() { 6 const value = await this.readCharacteristic() 7 this.emit('READ', value) 8 } 9 } 1 class SomeComponent extends React.Component { 2 handleRead(value) { 3 this.props.actions.storeValues(value) 4 } 5 componentDidMount() { 6 this.props.bleManager.on( 7 'READ', 8 this.handleRead.bind(this) 9 ) 10 } 11 render() { 12 /* render buttons to 13 * - startScanning 14 * - connectToPeripheral, 15 * - startMeasuring */ 16 } 17 }

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Problems 4PNF"OESPJEEFWJDFTBSFUPPTMPXUP DPOTVNFFWFOUT "EEXBJUT +VTUBGUFSEFWJDFTBSFCPPUFE DIBSBDUFSJTUJD WBMVFTBSFOPUJOJUJBMJ[FEZFU 8SJUFJOJUJBMWBMVFTUPFBDIDIBSBDUFSJTUJDT CFGPSF3FBE

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Problems %POPUGPSHFUlEJTDPOOFDUzGPSFSSPSGSFF EFWFMPQNFOU 5IFSFBSFGFXEFTDSJQUJPOTBCPVUCPOEJOH 5SZBOEFSSPS IUUQXXXTJMFYKQCMPHXJSFMFTT CMVFUPPUIIUNM

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Summary 6TJOH#-&JTFBTZPO3FBDU/BUJWF 8FDBOVTFJ04"OESPJEBTQFSJQIFSBMT OPCMFJTBWBJMBCMFUPP IUUQTHJUIVCDPNTBOEFFQNJTUSZOPCMF -FU`THFUTUBSUFE

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References IUUQTGBCLVSBHJUCPPLTJPCMFEPDTDPOUFOU NPEVMFIUNM IUUQTHJUIVCDPNJOOPWFJUSFBDUOBUJWFCMF NBOBHFS IUUQXXXTJMFYKQCMPHXJSFMFTT CMVFUPPUIIUNM