Nissei bluetooth

//var noble = require('noble');
var noble = require('../../node_modules/noble/index');

// UUID
var UUID_BLESERIAL_SERVICE = '1ef19620-a803-4af0-ae95-4b4b0aa26f29'.replace(/\-/g, '');
var UUID_BLESERIAL_RX = '1ef19621-a803-4af0-ae95-4b4b0aa26f29'.replace(/\-/g, '');
var UUID_BLESERIAL_TX = '1ef19622-a803-4af0-ae95-4b4b0aa26f29'.replace(/\-/g, '');
// Command
var buf_cnkey = new Buffer([0xE7,0xFD,0x33,0x35,0x36,0x30,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xB6]);
var buf_E7620101 = new Buffer([0xE7,0x62,0x01,0x01,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]);

// 各CHARACTERISTICSをUUIDから判断してcharacteristic格納する変数
var CHARACTERISTICS_BLESERIAL_SERVICE;
var CHARACTERISTICS_BLESERIAL_RX;
var CHARACTERISTICS_BLESERIAL_TX;
//
var str1,str2,str3,str4;

// LED ON/OFF
//var led_toggle = false;

// 状態がパワーONだったらスキャンに移行
noble.on('stateChange', function(state) {
    console.log('on -> stateChange: ' + state);

    if (state === 'poweredOn') {
        noble.startScanning();
    } else {
        noble.stopScanning();
    }
});

noble.on('scanStart', function() {
    console.log('on -> scanStart');
});

noble.on('scanStop', function() {
    console.log('on -> scanStop');
});

// discover 機器が発見されたら
noble.on('discover', function(peripheral) {
    console.log('on -> discover: ' + peripheral);
    // まずスキャンをとめる
    noble.stopScanning();

    // 接続時のイベント
    peripheral.on('connect', function() {
        console.log('on -> connect');
        this.discoverServices();
    });
    // 切断時のイベント
    peripheral.on('disconnect', function() {
        console.log('on -> disconnect');
    });

    // 見つけたサービス（機器）へのアクセス
    peripheral.on('servicesDiscover', function(services) {
        for(i = 0; i < services.length; i++) {
            // サービスがUUID_BLESERIAL_SERVICEと一致した時だけ処理
            if(services[i]['uuid'] == UUID_BLESERIAL_SERVICE){
                // サービスのcharacteristic捜索
                services[i].on('includedServicesDiscover', function(includedServiceUuids) {
                    console.log('on -> service included services discovered [' + includedServiceUuids + ']');
                    this.discoverCharacteristics();
                });
                // characteristic取得イベント
                services[i].on('characteristicsDiscover', function(characteristics) {
                    // characteristics配列から必要なCHARACTERISTICSをUUIDから判断してcharacteristic格納
                    for(j = 0; j < characteristics.length; j++) {
                        // 入力 characteristic
                        if( UUID_BLESERIAL_RX == characteristics[j].uuid ){
                            console.log("CHARACTERISTICS_BLESERIAL_RX exist!!");
                            CHARACTERISTICS_BLESERIAL_RX = characteristics[j];
                        }
                        // 出力 characteristic
                        // デジタル入出力を担当するPIO全部に出力するようにお願いする
                        if( UUID_BLESERIAL_TX == characteristics[j].uuid ) {
                            console.log("CHARACTERISTICS_BLESERIAL_TX exist!!");
                            CHARACTERISTICS_BLESERIAL_TX = characteristics[j];
                            // CNKEY
                            str1=peripheral.id;
                            console.log('str1=' + str1);
                            str2=str1.substring(4, 6)+str1.substring(6, 8)+str1.substring(8, 10)+str1.substring(10, 12);
                            console.log('str2=' + str2);
                            //var a = Long.parseLong(str2,16);
                            var a = parseInt(str2,16);
                            console.log('a=' + a);
                            str3=String(a);
                            console.log('str3=' + str3);
                            str4=str3.substring(str3.length-4);
                            console.log('str4=' + str4);
                            buf_cnkey[2]=str4.charCodeAt(0);
                            buf_cnkey[3]=str4.charCodeAt(1);
                            buf_cnkey[4]=str4.charCodeAt(2);
                            buf_cnkey[5]=str4.charCodeAt(3);
                            // チェックサム
                            buf_cnkey[19]=convCheckSum(buf_cnkey);
                            console.log('convCheckSum=' + buf_cnkey[19]);
                            CHARACTERISTICS_BLESERIAL_TX.write(buf_cnkey, false, function(error){
                                console.log('error:' + error);
                            });
                            // チェックサム
                            buf_E7620101[19]=convCheckSum(buf_E7620101);
                            console.log('convCheckSum=' + buf_E7620101[19]);
                            CHARACTERISTICS_BLESERIAL_TX.write(buf_E7620101, false, function(error){
                                console.log('error:' + error);
                            });
                        }
                    }

                    // 実際の点滅させるところ
                    setInterval(function(){
                        // ANALOG_READ
                        CHARACTERISTICS_BLESERIAL_RX.read(function(error, data) {
                            if (data[1] == 0x61) {
                                console.log( 'stsBO:' + data[2]);
                                console.log( 'PUL:' + data[3]);
                                console.log( 'SPO2:' + data[4]);
                                console.log( 'BAT:' + data[5]);
                                console.log( 'P:' + data[6]);
                                console.log( '////////////');
                            }

                            if (data[1] == 0x63) {
                                console.log( 'PI:' + data[2]);
                                console.log( 'PUL:' + data[3]);
                                console.log( 'SPO2:' + data[4]);
                                console.log( 'BAT:' + data[5]);
                                console.log( 'P:' + data[6]);
                                console.log( '////////////');
                            }
                        });
                    }, 100);

                });
                services[i].discoverIncludedServices();
            }
        }

    });

    // 機器との接続開始
    peripheral.connect();
});


function convCheckSum(buf) {
    var sumData = 0;
    var i;
    for(i = 0; i < 19; i++) {
        sumData += buf[i];
    }
    sumData = 0xFF - (0xa5 + sumData) + 1;
    return sumData;
}