I'm working on the SensorTile board that acts as a server in a BLE connection with a tablet (the client). I was able to send data trough the BLE from server to the client but I can't send data from client to server. Do you have any suggestions?

[MatteoFeatureJam]

Reading the SampleApp code when the client send data to the server it seems that an EVT_BLUE_GATT_ATTRIBUTE_MODIFIED should be detected in the user_notify(...) function. But if I write on the characteristic from my tablet app nothing happens...

In the BlueNRG-1, BlueNRG-MS programming manual is suggested to Implement in the main.c a function called HCI_Event_CB() that should be called in the HCI_Process(), but there isn't written were to call the HCI_Process() function. Considering that I implemented an RTOS where do I have to call the HCI_Process()?

I feel that I am missing something important. Can anybody help me?

Thanks in advance

P.s.:

The characteristic was added like this:

ret = aci_gatt_add_char(sampleServHandle, UUID_TYPE_128, charUuidRX, 20, CHAR_PROP_WRITE|CHAR_PROP_WRITE_WITHOUT_RESP, ATTR_PERMISSION_NONE, GATT_NOTIFY_ATTRIBUTE_WRITE, 16, 1, &RXCharHandle);

 if (ret != BLE_STATUS_SUCCESS) goto fail;