Diff: public/GattClient.h

Revision:

490:58a0313fffb5

Child:

495:b0d77b1db2df

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/public/GattClient.h	Fri Jun 19 15:52:02 2015 +0100
@@ -0,0 +1,146 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * 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
+ *
+ *     http://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.
+ */
+
+#ifndef __GATT_CLIENT_H__
+#define __GATT_CLIENT_H__
+
+class GattClient {
+#if 0
+public:
+    /* Event callback handlers. */
+    typedef void (*EventCallback_t)(GattAttribute::Handle_t attributeHandle);
+    typedef void (*ServerEventCallback_t)(void);                    /**< independent of any particular attribute */
+
+    friend class BLEDevice;
+private:
+    /* These functions must be defined in the sub-class */
+    virtual ble_error_t addService(GattService &)                                                               = 0;
+    virtual ble_error_t readValue(GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP) = 0;
+    virtual ble_error_t readValue(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP) = 0;
+    virtual ble_error_t updateValue(GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false) = 0;
+    virtual ble_error_t updateValue(Gap::Handle_t connectionHandle, GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false) = 0;
+    virtual ble_error_t initializeGATTDatabase(void)                                                            = 0;
+
+    // ToDo: For updateValue, check the CCCD to see if the value we are
+    // updating has the notify or indicate bits sent, and if BOTH are set
+    // be sure to call sd_ble_gatts_hvx() twice with notify then indicate!
+    // Strange use case, but valid and must be covered!
+
+    void setOnDataSent(void (*callback)(unsigned count)) {onDataSent.add(callback);}
+    template <typename T>
+    void setOnDataSent(T *objPtr, void (T::*memberPtr)(unsigned count)) {
+        onDataSent.add(objPtr, memberPtr);
+    }
+    void setOnDataWritten(void (*callback)(const GattCharacteristicWriteCBParams *eventDataP)) {onDataWritten.add(callback);}
+    template <typename T>
+    void setOnDataWritten(T *objPtr, void (T::*memberPtr)(const GattCharacteristicWriteCBParams *context)) {
+        onDataWritten.add(objPtr, memberPtr);
+    }
+
+    /**
+     * A virtual function to allow underlying stacks to indicate if they support
+     * onDataRead(). It should be overridden to return true as applicable.
+     */
+    virtual bool isOnDataReadAvailable() const {
+        return false;
+    }
+    ble_error_t setOnDataRead(void (*callback)(const GattCharacteristicReadCBParams *eventDataP)) {
+        if (!isOnDataReadAvailable()) {
+            return BLE_ERROR_NOT_IMPLEMENTED;
+        }
+
+        onDataRead.add(callback);
+        return BLE_ERROR_NONE;
+    }
+    template <typename T>
+    ble_error_t setOnDataRead(T *objPtr, void (T::*memberPtr)(const GattCharacteristicReadCBParams *context)) {
+        if (!isOnDataReadAvailable()) {
+            return BLE_ERROR_NOT_IMPLEMENTED;
+        }
+
+        onDataRead.add(objPtr, memberPtr);
+        return BLE_ERROR_NONE;
+    }
+    void setOnUpdatesEnabled(EventCallback_t callback)       {onUpdatesEnabled       = callback;}
+    void setOnUpdatesDisabled(EventCallback_t callback)      {onUpdatesDisabled      = callback;}
+    void setOnConfirmationReceived(EventCallback_t callback) {onConfirmationReceived = callback;}
+
+protected:
+    void handleDataWrittenEvent(const GattCharacteristicWriteCBParams *params) {
+        if (onDataWritten.hasCallbacksAttached()) {
+            onDataWritten.call(params);
+        }
+    }
+
+    void handleDataReadEvent(const GattCharacteristicReadCBParams *params) {
+        if (onDataRead.hasCallbacksAttached()) {
+            onDataRead.call(params);
+        }
+    }
+
+    void handleEvent(GattServerEvents::gattEvent_e type, GattAttribute::Handle_t charHandle) {
+        switch (type) {
+            case GattServerEvents::GATT_EVENT_UPDATES_ENABLED:
+                if (onUpdatesEnabled) {
+                    onUpdatesEnabled(charHandle);
+                }
+                break;
+            case GattServerEvents::GATT_EVENT_UPDATES_DISABLED:
+                if (onUpdatesDisabled) {
+                    onUpdatesDisabled(charHandle);
+                }
+                break;
+            case GattServerEvents::GATT_EVENT_CONFIRMATION_RECEIVED:
+                if (onConfirmationReceived) {
+                    onConfirmationReceived(charHandle);
+                }
+                break;
+            default:
+                break;
+        }
+    }
+
+    void handleDataSentEvent(unsigned count) {
+        if (onDataSent.hasCallbacksAttached()) {
+            onDataSent.call(count);
+        }
+    }
+
+protected:
+    uint8_t serviceCount;
+    uint8_t characteristicCount;
+
+private:
+    CallChainOfFunctionPointersWithContext<unsigned>                                onDataSent;
+    CallChainOfFunctionPointersWithContext<const GattCharacteristicWriteCBParams *> onDataWritten;
+    CallChainOfFunctionPointersWithContext<const GattCharacteristicReadCBParams *>  onDataRead;
+    EventCallback_t                                                                 onUpdatesEnabled;
+    EventCallback_t                                                                 onUpdatesDisabled;
+    EventCallback_t                                                                 onConfirmationReceived;
+#endif
+
+protected:
+    GattClient() {
+        /* empty */
+    }
+
+private:
+    /* disallow copy and assignment */
+    GattClient(const GattClient &);
+    GattClient& operator=(const GattClient &);
+};
+
+#endif // ifndef __GATT_CLIENT_H__
\ No newline at end of file