2 Replies Latest reply on May 2, 2016 7:36 AM by jonas.voigt90_1619166

    How to Write to the Gatt Database?

    jonas.voigt90_1619166

      Hello my name is Jonas and is a student in sweden and have recently begun working on a project with PSoC BLE using the PSoC Creator.

         

      I have created a custom Profile and I am testing various ways of sending my data but seem to be having troubles with CyBle_GattWriteAttributeValue().

         

      In the profile I can create several different fields with different variable types.

         

      But the function for the server to write data to the database CyBle_GattWriteAttributeValue gives me a few questions.
      It requires several parameters, most notably the variable  CYBLE_GATT_HANDLE_VALUE_PAIR_T which handles the data.

         

      This variable handles several data values, as the attributeHandle (where to put stuff?) but also the datafields containing a pointer to the actual data aswell as some information about the data.
      This field, seems to only be able to contain a pointer to a uint8 variable?

         

      CYBLE_GATT_HANDLE_VALUE_PAIR_T ->CYBLE_GATT_VALUE_T -> value(uint8).

         

      If I decide I want a field with a uint16 for example, how do I write to this field?
      And how do I write to different fields if decide to use more than one?
      Perhaps I am misunderstanding something regarding the use of the function or the variable type CYBLE_GATT_HANDLE_VALUE_PAIR_T?
       
      Basic idea of what I am trying to do(but how would i change the.

         

        uint8 bvalue = 10;
      CYBLE_GATT_HANDLE_VALUE_PAIR_T handleValue;
          CYBLE_CONN_HANDLE_T connHandle;
          handleValue.attrHandle = CYBLE_MEDDELANDE_MED_CHAR_HANDLE;
          handleValue.value.len = 1;
          handleValue.value.val = &bvalue;
          

         

      CyBle_GattsWriteAttributeValue(&handleValue, 0, &cyBle_connHandle, CYBLE_GATT_DB_LOCALLY_INITIATED);

         

      Help, discussions or a pointer where to look would be most appreciated.

         

      Best Regards Jonas