impl turnon/off and notifications

plejd/ble.js

@@ -3,7 +3,6 @@ const crypto = require('crypto');
 const xor = require('buffer-xor');
 const _ = require('lodash');
 const EventEmitter = require('events');
-const sleep = require('sleep');
 
 let debug = 'console';
 
@@ -47,8 +46,11 @@ class PlejdService extends EventEmitter {
     this.devices = {};
     // Keeps track of the currently connected device
     this.device = null;
+    this.deviceAddress = null;
     this.deviceIdx = 0;
 
+    this.writeQueue = [];
+
     // Holds a reference to all characteristics
     this.characteristicState = STATE_UNINITIALIZED;
     this.characteristics = {
@@ -62,6 +64,27 @@ class PlejdService extends EventEmitter {
     this.wireEvents();
   }
 
+  turnOn(id, brightness) {
+    logger('turning on ' + id + ' at brightness ' + brightness);
+
+    var payload;
+    if (!brightness) {
+      payload = Buffer.from((id).toString(16).padStart(2, '0') + '0110009701', 'hex');
+    } else {
+      brightness = brightness << 8 | brightness;
+      payload = Buffer.from((id).toString(16).padStart(2, '0') + '0110009801' + (brightness).toString(16).padStart(4, '0'), 'hex');
+    }
+
+    this.write(payload);
+  }
+
+  turnOff(id) {
+    logger('turning off ' + id);
+
+    var payload = Buffer.from((id).toString(16).padStart(2, '0') + '0110009700', 'hex');
+    this.write(payload);
+  }
+
   scan() {
     logger('scan()');
 
@@ -112,6 +135,14 @@ class PlejdService extends EventEmitter {
       return;
     }
 
+    this.deviceAddress = this._reverseBuffer(
+      Buffer.from(
+        String(this.device.address)
+          .replace(/\-/g, '')
+          .replace(/\:/g, ''), 'hex'
+      )
+    );
+
     logger('connecting to ' + this.device.id + ' with addr ' + this.device.address + ' and rssi ' + this.device.rssi);
     setTimeout(() => {
       if (self.state !== STATE_CONNECTED && self.state !== STATE_AUTHENTICATED) {
@@ -141,7 +172,12 @@ class PlejdService extends EventEmitter {
       return;
     }
 
+    clearInterval(this.pingRef);
+
+    this.unsubscribeCharacteristics();
     this.device.disconnect();
+
+    this.state = STATE_DISCONNECTED;
   }
 
   authenticate() {
@@ -179,6 +215,22 @@ class PlejdService extends EventEmitter {
     });
   }
 
+  write(data) {
+    if (this.state !== STATE_AUTHENTICATED) {
+      logger('error: not connected.');
+      this.writeQueue.push(data);
+      return false;
+    }
+
+    const encryptedData = this._encryptDecrypt(this.cryptoKey, this.deviceAddress, data);
+    this.characteristics.data.write(encryptedData, false);
+
+    let writeData;
+    while ((writeData = this.writeQueue.shift()) !== undefined) {
+      this.characteristics.data.write(this._encryptDecrypt(this.cryptoKey, this.deviceAddress, writeData), false);
+    }
+  }
+
   onAuthenticated() {
     // Start ping
     logger('onAuthenticated()');
@@ -194,6 +246,9 @@ class PlejdService extends EventEmitter {
         logger('ping');
         this.ping();
       }
+      else if (this.state === STATE_DISCONNECTED) {
+        console.log('warning: device disconnected, stop ping.');
+      }
       else {
         console.log('error: ping failed, not connected.');
       }
@@ -210,7 +265,9 @@ class PlejdService extends EventEmitter {
     logger('stopping ping and reconnecting.');
     clearInterval(this.pingRef);
 
+    this.unsubscribeCharacteristics();
     this.state = STATE_DISCONNECTED;
+
     this.connect(this.device.id);
   }
 
@@ -322,6 +379,10 @@ class PlejdService extends EventEmitter {
           && self.characteristics.ping) {
 
           self.characteristicState = STATE_INITIALIZED;
+
+          // subscribe to notifications
+          this.subscribeCharacteristics();
+
           self.emit('deviceCharacteristicsComplete', self.device);
         }
       });
@@ -367,6 +428,28 @@ class PlejdService extends EventEmitter {
     }
   }
 
+  onLastDataUpdated(data, isNotification) {
+    const decoded = this._encryptDecrypt(this.cryptoKey, this.deviceAddress, data);
+
+    let state = 0;
+    let dim = 0;
+    let device = parseInt(decoded[0], 10);
+
+    if (decoded.toString('hex', 3, 5) === '00c8' || decoded.toString('hex', 3, 5) === '0098') {
+      state = parseInt(decoded.toString('hex', 5, 6), 10);
+      dim = parseInt(decoded.toString('hex', 6, 8), 16) >> 8;
+
+      logger('d: ' + device + ' got state+dim update: ' + state + ' - ' + dim);
+      this.emit('dimChanged', device, state, dim);
+    }
+    else if (decoded.toString('hex', 3, 5) === '0097') {
+      state = parseInt(decoded.toString('hex', 5, 6), 10);
+
+      logger('d: ' + device + ' got state update: ' + state);
+      this.emit('stateChanged', device, state);
+    }
+  }
+
   wireEvents() {
     logger('wireEvents()');
     const self = this;
@@ -383,6 +466,27 @@ class PlejdService extends EventEmitter {
     this.on('pingSuccess', this.onPingSuccess.bind(self));
   }
 
+  subscribeCharacteristics() {
+    if (this.characteristics.lastData) {
+      this.characteristics.lastData.subscribe((err) => {
+        if (err) {
+          console.log('error: could not subscribe to event.');
+        }
+      });
+      this.characteristics.lastData.on('data', this.onLastDataUpdated.bind(this));
+    }
+  }
+
+  unsubscribeCharacteristics() {
+    if (this.characteristics.lastData) {
+      this.characteristics.lastData.unsubscribe((err) => {
+        if (err) {
+          console.log('error: could not unsubscribe from event.');
+        }
+      });
+    }
+  }
+
   _createChallengeResponse(key, challenge) {
     const intermediate = crypto.createHash('sha256').update(xor(key, challenge)).digest();
     const part1 = intermediate.subarray(0, 16);

plejd/package-lock.json

@@ -24,6 +24,11 @@
         "node-addon-api": "^1.1.0"
       }
     },
+    "@types/zen-observable": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/@types/zen-observable/-/zen-observable-0.8.0.tgz",
+      "integrity": "sha512-te5lMAWii1uEJ4FwLjzdlbw3+n0FZNOvFXHxQDKeT0dilh7HOzdMzV2TrJVUzq8ep7J4Na8OUYPRLSQkJHAlrg=="
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -134,6 +139,11 @@
         "readable-stream": "> 1.0.0 < 3.0.0"
       }
     },
+    "callsites": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
+      "integrity": "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ=="
+    },
     "chownr": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.3.tgz",
@@ -311,6 +321,11 @@
         "ext": "^1.1.2"
       }
     },
+    "esm": {
+      "version": "3.2.25",
+      "resolved": "https://registry.npmjs.org/esm/-/esm-3.2.25.tgz",
+      "integrity": "sha512-U1suiZ2oDVWv4zPO56S0NcR5QriEahGtdN2OR6FiOG4WJvcjBVFB0qI4+eKoWFH483PKGuLuu6V8Z4T5g63UVA=="
+    },
     "event-emitter": {
       "version": "0.3.5",
       "resolved": "https://registry.npmjs.org/event-emitter/-/event-emitter-0.3.5.tgz",
@@ -550,6 +565,14 @@
       "resolved": "https://registry.npmjs.org/is-negated-glob/-/is-negated-glob-1.0.0.tgz",
       "integrity": "sha1-aRC8pdqMleeEtXUbl2z1oQ/uNtI="
     },
+    "is-observable": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-observable/-/is-observable-1.1.0.tgz",
+      "integrity": "sha512-NqCa4Sa2d+u7BWc6CukaObG3Fh+CU9bvixbpcXYhy2VvYS7vVGIdAgnIS5Ks3A/cqk4rebLJ9s8zBstT2aKnIA==",
+      "requires": {
+        "symbol-observable": "^1.1.0"
+      }
+    },
     "is-relative": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-relative/-/is-relative-1.0.0.tgz",
@@ -818,6 +841,11 @@
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
       "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM="
     },
+    "observable-fns": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/observable-fns/-/observable-fns-0.4.0.tgz",
+      "integrity": "sha512-2BFtEqza7sjLpgImAmagHK97mBwh3+bkwAZS/qF/4n2S8RzKsbdsdOczRBh+Piz7QgQZRAjTzI5vtxtOUgU+cQ=="
+    },
     "once": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
@@ -1090,6 +1118,11 @@
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
       "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo="
     },
+    "symbol-observable": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.2.0.tgz",
+      "integrity": "sha512-e900nM8RRtGhlV36KGEU9k65K3mPb1WV70OdjfxlG2EAuM1noi/E/BaW/uMhL7bPEssK8QV57vN3esixjUvcXQ=="
+    },
     "tar": {
       "version": "4.4.13",
       "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
@@ -1142,6 +1175,20 @@
         }
       }
     },
+    "threads": {
+      "version": "1.0.0-beta.9",
+      "resolved": "https://registry.npmjs.org/threads/-/threads-1.0.0-beta.9.tgz",
+      "integrity": "sha512-ZjpQvqA78p+y4jtlhnQsKc8V9AwUvrWwOhy9FkFKWO24JHKte3oWllmjvUw896YqrZymsJvqJwlbUHV1CpVtKw==",
+      "requires": {
+        "@types/zen-observable": "^0.8.0",
+        "callsites": "^3.1.0",
+        "debug": "^4.1.1",
+        "is-observable": "^1.1.0",
+        "observable-fns": "^0.4.0",
+        "tiny-worker": ">= 2",
+        "zen-observable": "^0.8.14"
+      }
+    },
     "through2": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
@@ -1160,6 +1207,14 @@
         "xtend": "~4.0.0"
       }
     },
+    "tiny-worker": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/tiny-worker/-/tiny-worker-2.3.0.tgz",
+      "integrity": "sha512-pJ70wq5EAqTAEl9IkGzA+fN0836rycEuz2Cn6yeZ6FRzlVS5IDOkFHpIoEsksPRQV34GDqXm65+OlnZqUSyK2g==",
+      "requires": {
+        "esm": "^3.2.25"
+      }
+    },
     "to-absolute-glob": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/to-absolute-glob/-/to-absolute-glob-2.0.2.tgz",
@@ -1282,6 +1337,11 @@
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
       "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
+    },
+    "zen-observable": {
+      "version": "0.8.15",
+      "resolved": "https://registry.npmjs.org/zen-observable/-/zen-observable-0.8.15.tgz",
+      "integrity": "sha512-PQ2PC7R9rslx84ndNBZB/Dkv8V8fZEpk83RLgXtYd0fwUgEjseMn1Dgajh2x6S8QbZAFa9p2qVCEuYZNgve0dQ=="
     }
   }
 }