弊社ではUT-201BLEおよびUA-651BLEを以下ドキュメントを参考に技術検証しています。
https://obniz.com/ja/sdk/parts/UT201BLE/README.md
https://obniz.com/ja/sdk/parts/UA651BLE/README.md
以下の内容をobnizクラウドのHTMLプログラムに入力して実行したところ、BLE通信を行うタイミングで50%程度の確率でエラーとなります。
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link
rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
/>
<link rel="stylesheet" href="/css/starter-sample.css" />
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script
src="https://unpkg.com/obniz@3.16.0/obniz.js"
crossorigin="anonymous"
></script>
</head>
<body>
<h1>動作確認結果<h1>
<script>
const obniz = new Obniz("xxxx-xxxx");
const IBS02 = Obniz.getPartsClass('iBS02PIR');
const UT201BLE = Obniz.getPartsClass("UT201BLE");
const UA651BLE = Obniz.getPartsClass("UA651BLE");
obniz.onconnect = async () => {
await obniz.ble.initWait();
obniz.ble.scan.onfind = async (peripheral) => {
if (IBS02.isDevice(peripheral)) {
const data = IBS02.getData(peripheral);
console.log(data);
} else if (UT201BLE.isDevice(peripheral)) {
const device = new UT201BLE(peripheral);
const data = await device.getDataWait();
console.log(data);
obniz.ble.scan.startWait(null, { duplicate: true, duration: null });
} else if (UA651BLE.isDevice(peripheral)) {
const device = new UA651BLE(peripheral);
const data = await device.getDataWait();
console.log(data);
obniz.ble.scan.startWait(null, { duplicate: true, duration: null });
}
};
obniz.ble.scan.onfinish = async (peripherals, error) => {
console.log("scan timeout!")
};
obniz.ble.scan.startWait(null, { duplicate: true, duration: null });
};
</script>
</body>
</html>
エラーが発生した時、以下のerror1またはerror2のいずれかのログが出力されます。
/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizConnection.js:378
throw err;
^
ObnizBleHciStateError: Connection Failed to be Established / Synchronization Timeout {"peripheralAddress":"b8804f58aa42"}
at NobleBindings.onDisconnComplete (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/protocol/central/bindings.js:189:27)
at Hci.emit (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/eventemitter3/index.js:203:33)
at Hci.onHciEventData (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/protocol/hci.js:888:18)
at Hci.onSocketData (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/protocol/hci.js:954:18)
at ObnizBLEHci.notified (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/hci.js:69:22)
at ObnizBLE.notifyFromObniz (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/ble.js:122:22)
at Obniz._notifyToModule (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizComponents.js:271:37)
at Obniz._notifyToModule (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizDevice.js:149:15)
at Obniz.wsOnMessage (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizConnection.js:437:26)
at WebSocket.<anonymous> (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizConnection.js:598:18) {
code: 10,
state: 62
}
/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizConnection.js:378
throw err;
^
ObnizBleHciStateError: Remote User Terminated Connection {"peripheralAddress":"b8804f58aa42"}
at NobleBindings.onDisconnComplete (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/protocol/central/bindings.js:189:27)
at Hci.emit (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/eventemitter3/index.js:203:33)
at Hci.onHciEventData (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/protocol/hci.js:888:18)
at Hci.onSocketData (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/protocol/hci.js:954:18)
at ObnizBLEHci.notified (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/hci.js:69:22)
at ObnizBLE.notifyFromObniz (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/libs/embeds/bleHci/ble.js:122:22)
at Obniz._notifyToModule (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizComponents.js:271:37)
at Obniz._notifyToModule (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizDevice.js:149:15)
at Obniz.wsOnMessage (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizConnection.js:437:26)
at WebSocket.<anonymous> (/Users/user/src/github.com/githubuser/proto-hydra/device/obniz/IoTGateway/node_modules/obniz/dist/src/obniz/ObnizConnection.js:598:18) {
code: 10,
state: 19
}
何か回避策はありますでしょうか？