feat: add user deactivation and vendor BLE protocol

miniprogram/services/ble/connection.js

@@ -81,6 +81,17 @@ function handleNotification(frame) {
   }
 }
 
+function handleValueChange(res) {
+  var frame = protocol.parseFrame(res.value)
+  if (frame) {
+    handleNotification(frame)
+    return
+  }
+  if (protocol.PROTOCOL_MODE === 'vendor_33') {
+    emit('status', protocol.parseVendorStatus(res.value))
+  }
+}
+
 // --- service/characteristic discovery ---
 
 function discoverChars(deviceId, serviceId, group) {
@@ -118,10 +129,10 @@ function subscribeToNotifications(deviceId, serviceId) {
       characteristicId: _chars.status.uuid,
       state: true,
       success: function () {
-        wx.onBLECharacteristicValueChange(function (res) {
-          var frame = protocol.parseFrame(res.value)
-          if (frame) handleNotification(frame)
-        })
+        if (wx.offBLECharacteristicValueChange) {
+          wx.offBLECharacteristicValueChange(handleValueChange)
+        }
+        wx.onBLECharacteristicValueChange(handleValueChange)
         resolve()
       },
       fail: function () { resolve() }
@@ -129,6 +140,20 @@ function subscribeToNotifications(deviceId, serviceId) {
   })
 }
 
+function requestMtu(deviceId) {
+  return new Promise(function (resolve) {
+    if (!wx.setBLEMTU) {
+      resolve()
+      return
+    }
+    wx.setBLEMTU({
+      deviceId: deviceId,
+      mtu: 64,
+      complete: function () { resolve() }
+    })
+  })
+}
+
 function discoverServices(deviceId, callbacks) {
   wx.getBLEDeviceServices({
     deviceId: deviceId,
@@ -216,7 +241,9 @@ function connect(deviceId, callbacks) {
     timeout: 10000,
     success: function () {
       _connected = true
-      discoverServices(deviceId, callbacks)
+      requestMtu(deviceId).then(function () {
+        discoverServices(deviceId, callbacks)
+      })
     },
     fail: function () {
       _connected = false
@@ -251,46 +278,48 @@ function attemptReconnect(deviceId, retriesLeft) {
     success: function () {
       _connected = true
       _chars = {}
-      wx.getBLEDeviceServices({
-        deviceId: deviceId,
-        success: function (res) {
-          var services = res.services
-          var serviceMap = {}
-          for (var i = 0; i < services.length; i++) {
-            var uuid = services[i].uuid.toUpperCase()
-            if (uuid.indexOf(SERVICE.DEVICE_INFO) !== -1) {
-              serviceMap.deviceInfo = services[i].uuid
-            } else if (uuid.indexOf(SERVICE.DATA_COMM) !== -1) {
-              serviceMap.dataComm = services[i].uuid
+      requestMtu(deviceId).then(function () {
+        wx.getBLEDeviceServices({
+          deviceId: deviceId,
+          success: function (res) {
+            var services = res.services
+            var serviceMap = {}
+            for (var i = 0; i < services.length; i++) {
+              var uuid = services[i].uuid.toUpperCase()
+              if (uuid.indexOf(SERVICE.DEVICE_INFO) !== -1) {
+                serviceMap.deviceInfo = services[i].uuid
+              } else if (uuid.indexOf(SERVICE.DATA_COMM) !== -1) {
+                serviceMap.dataComm = services[i].uuid
+              }
+            }
+
+            var tasks = []
+            if (serviceMap.deviceInfo) {
+              tasks.push(discoverChars(deviceId, serviceMap.deviceInfo, 'deviceInfo'))
+            }
+            if (serviceMap.dataComm) {
+              tasks.push(discoverChars(deviceId, serviceMap.dataComm, 'dataComm'))
+            }
+
+            Promise.all(tasks).then(function () {
+              var serviceId = serviceMap.dataComm || null
+              return subscribeToNotifications(deviceId, serviceId)
+            }).then(function () {
+              _reconnecting = false
+              emit('reconnected', { deviceId: deviceId })
+            })
+          },
+          fail: function () {
+            if (retriesLeft > 1) {
+              setTimeout(function () {
+                attemptReconnect(deviceId, retriesLeft - 1)
+              }, 2000)
+            } else {
+              _reconnecting = false
+              emit('reconnect_failed', { deviceId: deviceId })
             }
           }
-
-          var tasks = []
-          if (serviceMap.deviceInfo) {
-            tasks.push(discoverChars(deviceId, serviceMap.deviceInfo, 'deviceInfo'))
-          }
-          if (serviceMap.dataComm) {
-            tasks.push(discoverChars(deviceId, serviceMap.dataComm, 'dataComm'))
-          }
-
-          Promise.all(tasks).then(function () {
-            var serviceId = serviceMap.dataComm || null
-            return subscribeToNotifications(deviceId, serviceId)
-          }).then(function () {
-            _reconnecting = false
-            emit('reconnected', { deviceId: deviceId })
-          })
-        },
-        fail: function () {
-          if (retriesLeft > 1) {
-            setTimeout(function () {
-              attemptReconnect(deviceId, retriesLeft - 1)
-            }, 2000)
-          } else {
-            _reconnecting = false
-            emit('reconnect_failed', { deviceId: deviceId })
-          }
-        }
+        })
       })
     },
     fail: function () {