Diff: microbit/microbit-dal/BLE_API/ble/GattAttribute.h

Revision:

0:b9164b348919

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/microbit/microbit-dal/BLE_API/ble/GattAttribute.h	Mon Oct 17 12:41:20 2016 +0000
@@ -0,0 +1,81 @@
+/* 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_ATTRIBUTE_H__
+#define __GATT_ATTRIBUTE_H__
+
+#include "UUID.h"
+
+class GattAttribute {
+public:
+    typedef uint16_t Handle_t;
+    static const Handle_t INVALID_HANDLE = 0x0000;
+
+public:
+    /**
+     *  @brief  Creates a new GattAttribute using the specified
+     *          UUID, value length, and inital value.
+     *
+     *  @param[in]  uuid
+     *              The UUID to use for this attribute.
+     *  @param[in]  valuePtr
+     *              The memory holding the initial value.
+     *  @param[in]  len
+     *              The length in bytes of this attribute's value.
+     *  @param[in]  maxLen
+     *              The max length in bytes of this attribute's value.
+     *  @param[in]  hasVariableLen
+     *              Whether the attribute's value length changes overtime.
+     *
+     *  @section EXAMPLE
+     *
+     *  @code
+     *
+     *  // UUID = 0x2A19, Min length 2, Max len = 2
+     *  GattAttribute attr = GattAttribute(0x2A19, &someValue, 2, 2);
+     *
+     *  @endcode
+     */
+    GattAttribute(const UUID &uuid, uint8_t *valuePtr = NULL, uint16_t len = 0, uint16_t maxLen = 0, bool hasVariableLen = true) :
+        _uuid(uuid), _valuePtr(valuePtr), _lenMax(maxLen), _len(len), _hasVariableLen(hasVariableLen), _handle() {
+        /* Empty */
+    }
+
+public:
+    Handle_t    getHandle(void)         const {return _handle;        }
+    const UUID &getUUID(void)           const {return _uuid;          }
+    uint16_t    getLength(void)         const {return _len;           }
+    uint16_t    getMaxLength(void)      const {return _lenMax;        }
+    uint16_t   *getLengthPtr(void)            {return &_len;          }
+    void        setHandle(Handle_t id)        {_handle = id;          }
+    uint8_t    *getValuePtr(void)             {return _valuePtr;      }
+    bool        hasVariableLength(void) const {return _hasVariableLen;}
+
+private:
+    UUID      _uuid;           /* Characteristic UUID. */
+    uint8_t  *_valuePtr;
+    uint16_t  _lenMax;         /* Maximum length of the value. */
+    uint16_t  _len;            /* Current length of the value. */
+    bool      _hasVariableLen;
+    Handle_t  _handle;
+
+private:
+    /* Disallow copy and assignment. */
+    GattAttribute(const GattAttribute &);
+    GattAttribute& operator=(const GattAttribute &);
+};
+
+#endif // ifndef __GATT_ATTRIBUTE_H__
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