Diff: microbit/microbit-dal/nRF51822/source/nRF5xGattServer.h

Revision:

0:b9164b348919

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/microbit/microbit-dal/nRF51822/source/nRF5xGattServer.h	Mon Oct 17 12:41:20 2016 +0000
@@ -0,0 +1,104 @@
+/* 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 __NRF51822_GATT_SERVER_H__
+#define __NRF51822_GATT_SERVER_H__
+
+#include <stddef.h>
+
+#include "ble/blecommon.h"
+#include "ble.h" /* nordic ble */
+#include "ble/Gap.h"
+#include "ble/GattServer.h"
+
+class nRF5xGattServer : public GattServer
+{
+public:
+    /* Functions that must be implemented from GattServer */
+    virtual ble_error_t addService(GattService &);
+    virtual ble_error_t read(GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP);
+    virtual ble_error_t read(Gap::Handle_t connectionHandle, GattAttribute::Handle_t attributeHandle, uint8_t buffer[], uint16_t *lengthP);
+    virtual ble_error_t write(GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false);
+    virtual ble_error_t write(Gap::Handle_t connectionHandle, GattAttribute::Handle_t, const uint8_t[], uint16_t, bool localOnly = false);
+    virtual ble_error_t notify(GattAttribute::Handle_t, const uint8_t[], uint16_t);
+    virtual ble_error_t areUpdatesEnabled(const GattCharacteristic &characteristic, bool *enabledP);
+    virtual ble_error_t areUpdatesEnabled(Gap::Handle_t connectionHandle, const GattCharacteristic &characteristic, bool *enabledP);
+    virtual ble_error_t reset(void);
+
+    /* nRF51 Functions */
+    void eventCallback(void);
+    void hwCallback(ble_evt_t *p_ble_evt);
+
+
+private:
+    const static unsigned BLE_TOTAL_CHARACTERISTICS = 30;
+    const static unsigned BLE_TOTAL_DESCRIPTORS     = 20;
+
+private:
+    /**
+     * resolve a value attribute to its owning characteristic.
+     * @param  valueHandle the value handle to be resolved.
+     * @return             characteristic index if a resolution is found, else -1.
+     */
+    int resolveValueHandleToCharIndex(GattAttribute::Handle_t valueHandle) const {
+        unsigned charIndex;
+        for (charIndex = 0; charIndex < characteristicCount; charIndex++) {
+            if (nrfCharacteristicHandles[charIndex].value_handle == valueHandle) {
+                return charIndex;
+            }
+        }
+
+        return -1;
+    }
+
+    /**
+     * resolve a CCCD attribute handle to its owning characteristic.
+     * @param  cccdHandle the CCCD handle to be resolved.
+     * @return             characteristic index if a resolution is found, else -1.
+     */
+    int resolveCCCDHandleToCharIndex(GattAttribute::Handle_t cccdHandle) const {
+        unsigned charIndex;
+        for (charIndex = 0; charIndex < characteristicCount; charIndex++) {
+            if (nrfCharacteristicHandles[charIndex].cccd_handle == cccdHandle) {
+                return charIndex;
+            }
+        }
+
+        return -1;
+    }
+
+private:
+    GattCharacteristic       *p_characteristics[BLE_TOTAL_CHARACTERISTICS];
+    ble_gatts_char_handles_t  nrfCharacteristicHandles[BLE_TOTAL_CHARACTERISTICS];
+    GattAttribute            *p_descriptors[BLE_TOTAL_DESCRIPTORS];
+    uint8_t                   descriptorCount;
+    uint16_t                  nrfDescriptorHandles[BLE_TOTAL_DESCRIPTORS];
+
+    /*
+     * Allow instantiation from nRF5xn when required.
+     */
+    friend class nRF5xn;
+
+    nRF5xGattServer() : GattServer(), p_characteristics(), nrfCharacteristicHandles(), p_descriptors(), descriptorCount(0), nrfDescriptorHandles() {
+        /* empty */
+    }
+
+private:
+    nRF5xGattServer(const nRF5xGattServer &);
+    const nRF5xGattServer& operator=(const nRF5xGattServer &);
+};
+
+#endif // ifndef __NRF51822_GATT_SERVER_H__
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