Characteristic.h

00001 /*******************************************************************************
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00003 *
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00010 *
00011 * The above copyright notice and this permission notice shall be included
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00025 *
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00032 */
00033 #ifndef _CHARACTERISTIC_H_
00034 #define _CHARACTERISTIC_H_
00035 
00036 #include "mbed.h"
00037 #include "BLE.h"
00038 #include "GattCharacteristic.h"
00039 
00040 class Characteristic {
00041 public:
00042   /**
00043    * @brief ticker handler static method
00044    */
00045   Characteristic(uint16_t length, const UUID &uuid,
00046                  uint8_t additionalProperties =
00047                      GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NONE,
00048                  GattAttribute *descriptors[] = NULL,
00049                  unsigned numDescriptors = 0);
00050 
00051   void setIndex(int index) { this->index = index; }
00052   /**
00053   * @brief Set a pointer reference to the mbed BLE framework
00054   */
00055   void setBLE(BLE *ble) { this->ble = ble; }
00056   /**
00057   * @brief Get the pointer to the byte payload
00058   */
00059   uint8_t *getPayloadPtr(void) { return payload.getPointer(); }
00060   /**
00061    * @brief Get the handle of the characteristic
00062    */
00063   GattAttribute::Handle_t getValueHandle();
00064   /**
00065    * @brief Update the characteristic
00066    */
00067   void update(void);
00068   /**
00069    * @brief Get the GattCharacteristic
00070    */
00071   GattCharacteristic *getGattCharacteristic();
00072   /**
00073   * @brief Get the length of the payload
00074   */
00075   int getPayloadLength(void);
00076 
00077   uint8_t *getPayloadBytes(void) { return payload.bytes; }
00078 
00079   void copyDataWritten(const GattWriteCallbackParams *params) {
00080     unsigned int i = 0;
00081     while (i < params->len && i < sizeof(dataWritten)) {
00082       dataWritten[i] = params->data[i];
00083       i++;
00084     }
00085     dataWrittenLength = params->len;
00086   }
00087 
00088   uint8_t *getDataWritten(int *length) {
00089     *length = dataWrittenLength;
00090     return dataWritten;
00091   }
00092 
00093 private:
00094   int payloadLength;
00095   struct PayloadStruct {
00096     uint8_t bytes[32];
00097     uint8_t *getPointer(void) { return bytes; }
00098   };
00099   /// local copy of data written to this characteristic
00100   uint8_t dataWritten[64];
00101   int dataWrittenLength;
00102   /// payload structure for this characteristic
00103   PayloadStruct payload;
00104   /// gatt characteristic
00105   GattCharacteristic gattCharacteristic;
00106   /// mbed BLE framework pointer
00107   BLE *ble;
00108   /// index of this characteristic
00109   int index;
00110 };
00111 
00112 #endif /* _CHARACTERISTIC_H_ */