From 907e901b6178256e0d7570c6d4f9736709347306 Mon Sep 17 00:00:00 2001 From: Jack Hsieh Date: Tue, 29 Jul 2025 23:53:13 -0700 Subject: [PATCH 1/2] Add cancel gatt connect test --- cancel_gatt_connect/device_code.js | 48 ++++++++++++++ cancel_gatt_connect/index.html | 91 ++++++++++++++++++++++++++ cancel_gatt_connect/web_app.js | 100 +++++++++++++++++++++++++++++ index.html | 1 + 4 files changed, 240 insertions(+) create mode 100644 cancel_gatt_connect/device_code.js create mode 100644 cancel_gatt_connect/index.html create mode 100644 cancel_gatt_connect/web_app.js diff --git a/cancel_gatt_connect/device_code.js b/cancel_gatt_connect/device_code.js new file mode 100644 index 0000000..6bb24a9 --- /dev/null +++ b/cancel_gatt_connect/device_code.js @@ -0,0 +1,48 @@ +/** + * Copyright 2022 Google LLC + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +function onInit() { + // Put into a known state. + digitalWrite(LED, 0); + + NRF.setServices({ + '0b30acec-193e-11eb-adc1-0242ac120002': { + '0b30afd0-193e-11eb-adc1-0242ac120002': { + value: [17], + broadcast: false, + readable: true, + writable: false, + notify: false, + description: 'Single read-only characteristic', + } + } + }); + + + NRF.on('disconnect', (reason) => { + // Provide feedback that device is no longer connected. + digitalWrite(LED, 0); + }); + + NRF.on('connect', (addr) => { + // Provide feedback that device is connected. + // TODO: Maybe only do this for some devices when external power is + // available. For example, this will turn on the backlight on the + // Pixl.js screen, which might not be desirable when powered by the + // CR2032 coin cell battery. + digitalWrite(LED, 1); + }); +} diff --git a/cancel_gatt_connect/index.html b/cancel_gatt_connect/index.html new file mode 100644 index 0000000..5eae0fb --- /dev/null +++ b/cancel_gatt_connect/index.html @@ -0,0 +1,91 @@ + + + + + + + + Cancel GATT connect + + + + + + + +

Cancel GATT connect

+

This is a simple test to check if gatt.connect() can be cancelled by gatt.disconnect(). +

+
+

Step 1

+
+
+
+ Press the button to load the code to the Espruino IDE. + From there, flash any Bluetooth capable Espruino device. +
+
+ View source. +
+
+ +
+
+
+ +

Step 2

+
+
+
+ Press the button to start pairing. +
+
+ +
+
+
+ +

Step 3

+
+
+
+ Unplug the Espruino Pixl.js from power source and click the button. +
+
+ +
+
+
+ +

Status:

+ 

+  

+  
+  
+  
+  
+
+
+
diff --git a/cancel_gatt_connect/web_app.js b/cancel_gatt_connect/web_app.js
new file mode 100644
index 0000000..a04de0f
--- /dev/null
+++ b/cancel_gatt_connect/web_app.js
@@ -0,0 +1,100 @@
+/**
+ *  Copyright 2025 Google LLC
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+// Espruino devices publish a UART service by default.
+const nordicUARTService = '6e400001-b5a3-f393-e0a9-e50e24dcca9e';
+
+let device = undefined;
+
+/**
+ * Load the device code to the Espruino IDE.
+ */
+function loadEspruinoDeviceCode() {
+  fetch('device_code.js').then(response => response.text()).then(data => {
+    let url = 'http://www.espruino.com/webide?code=' + encodeURIComponent(data);
+    window.open(url, '_window');
+  });
+}
+
+async function startPairing() {
+  clearStatus();
+  logInfo('Starting test');
+
+  $('btn_load_code').disabled = true;
+  $('btn_start_pairing').disabled = true;
+  $('btn_connect_then_cancel').disabled = true;
+
+  try {
+    const options = {
+      filters: [
+        { services: [nordicUARTService] }
+      ],
+    };
+
+    device = await navigator.bluetooth.requestDevice(options);
+    logInfo(`Paired to Bluetooh device with name: ${device.name}`);
+  } catch (error) {
+    logError(`Unexpected failure: ${error}`);
+  }
+
+  $('btn_load_code').disabled = false;
+  $('btn_start_pairing').disabled = false;
+  $('btn_connect_then_cancel').disabled = false;
+}
+
+async function connectThenCancel() {
+  $('btn_load_code').disabled = true;
+  $('btn_start_pairing').disabled = true;
+  $('btn_connect_then_cancel').disabled = true;
+
+  logInfo('Try to connect then cancel');
+  try {
+    setTimeout(() => {
+      device.gatt.disconnect();
+    }, 100);
+    await device.gatt.connect();
+    logError('connect() promise was not rejected');
+  } catch (e) {
+    if (e.name !== 'AbortError') {
+      logError(`connect() promise was rejected with unexpected error: ${e}`);
+    }
+    logInfo('connect() promise was rejected with Abort error');
+  }
+
+  $('btn_load_code').disabled = false;
+  $('btn_start_pairing').disabled = false;
+  $('btn_connect_then_cancel').disabled = false;
+  testDone();
+}
+
+async function init() {
+  if (!isBluetoothSupported()) {
+    console.log('Bluetooth not supported.');
+    $('bluetooth_available').style.display = 'none';
+    if (window.isSecureContext) {
+      $('bluetooth_none').style.visibility = 'visible';
+    } else {
+      $('bluetooth_insecure').style.visibility = 'visible';
+    }
+    return;
+  }
+
+  const available = await navigator.bluetooth.getAvailability();
+  if (!available) {
+    $('bluetooth_available').style.display = 'none';
+    $('bluetooth_unavailable').style.visibility = 'visible';
+  }
+}
diff --git a/index.html b/index.html
index 78292ab..d124545 100644
--- a/index.html
+++ b/index.html
@@ -43,6 +43,7 @@ 
Tests

     
  • Test navigator.bluetooth.getDevices
    • 
     
  • Test BluetoothDevice.watchAdvertisements
    • 
     
  • Test BluetoothDevice.forget
    • 
+    
  • Test cancelling a GATT connection
    • 
   
 
 

From 66424f6343d052dc85d7eb1fc3ea06c01f9b041b Mon Sep 17 00:00:00 2001
From: Chengwei Hsieh 
Date: Mon, 4 Aug 2025 14:07:05 -0700
Subject: [PATCH 2/2] Update year

---
 cancel_gatt_connect/device_code.js | 2 +-
 cancel_gatt_connect/index.html     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/cancel_gatt_connect/device_code.js b/cancel_gatt_connect/device_code.js
index 6bb24a9..b5c23ab 100644
--- a/cancel_gatt_connect/device_code.js
+++ b/cancel_gatt_connect/device_code.js
@@ -1,5 +1,5 @@
 /**
- *  Copyright 2022 Google LLC
+ *  Copyright 2025 Google LLC
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
diff --git a/cancel_gatt_connect/index.html b/cancel_gatt_connect/index.html
index 5eae0fb..484015c 100644
--- a/cancel_gatt_connect/index.html
+++ b/cancel_gatt_connect/index.html
@@ -1,6 +1,6 @@