Diff: public/GattServer.h

Revision:

300:d9a39f759a6a

Parent:

299:c1e4400af825

Child:

301:54c87189e423

--- a/public/GattServer.h	Mon Mar 02 11:50:48 2015 +0000
+++ b/public/GattServer.h	Mon Mar 02 11:50:48 2015 +0000
@@ -34,6 +34,7 @@
         characteristicCount(0),
         onDataSent(),
         onDataWritten(),
+        onDataRead(),
         onUpdatesEnabled(NULL),
         onUpdatesDisabled(NULL),
         onConfirmationReceived(NULL) {
@@ -43,10 +44,10 @@
     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(uint16_t handle, uint8_t buffer[], uint16_t *const lengthP) = 0;
-    virtual ble_error_t updateValue(uint16_t, uint8_t[], uint16_t, bool localOnly = false)    = 0;
-    virtual ble_error_t initializeGATTDatabase(void)                                          = 0;
+    virtual ble_error_t addService(GattService &)                                                            = 0;
+    virtual ble_error_t readValue(GattAttribute::Handle_t handle, uint8_t buffer[], uint16_t *const lengthP) = 0;
+    virtual ble_error_t updateValue(GattAttribute::Handle_t, 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
@@ -63,6 +64,31 @@
     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 isOnDataReadAvaialble() const {
+        return false;
+    }
+    ble_error_t setOnDataRead(void (*callback)(const GattCharacteristicReadCBParams *eventDataP)) {
+        if (!isOnDataReadAvaialble()) {
+            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 (!isOnDataReadAvaialble()) {
+            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;}
@@ -74,6 +100,12 @@
         }
     }
 
+    void handleDataReadEvent(const GattCharacteristicReadCBParams *params) {
+        if (onDataRead.hasCallbacksAttached()) {
+            onDataRead.call(params);
+        }
+    }
+
     void handleEvent(GattServerEvents::gattEvent_e type, uint16_t charHandle) {
         switch (type) {
             case GattServerEvents::GATT_EVENT_UPDATES_ENABLED:
@@ -109,6 +141,7 @@
 private:
     CallChainOfFunctionPointersWithContext<unsigned> onDataSent;
     CallChainOfFunctionPointersWithContext<const GattCharacteristicWriteCBParams *> onDataWritten;
+    CallChainOfFunctionPointersWithContext<const GattCharacteristicReadCBParams *> onDataRead;
     EventCallback_t onUpdatesEnabled;
     EventCallback_t onUpdatesDisabled;
     EventCallback_t onConfirmationReceived;