Adding variable length attributes to Maxim Feather

Author: nrcrast

features/FEATURE_BLE/targets/TARGET_Maxim/MaximGattServer.cpp

@@ -146,6 +146,12 @@ ble_error_t MaximGattServer::addService_(GattService &service)
         currAtt->pLen = p_char->getValueAttribute().getLengthPtr();
         currAtt->maxLen = p_char->getValueAttribute().getMaxLength();
         currAtt->settings = ATTS_SET_WRITE_CBACK | ATTS_SET_READ_CBACK;
+
+        if(p_char->getValueAttribute().hasVariableLength())
+        {
+            currAtt->settings |= ATTS_SET_VARIABLE_LEN;
+        }
+        
         if (p_char->getValueAttribute().getUUID().shortOrLong() == UUID::UUID_TYPE_LONG) {
             currAtt->settings |= ATTS_SET_UUID_128;
         }