Hi,
I see within the examples such as hello_client.c that a BLE_PROFILE_CFG struct is defined with all parameters, for example hello_client_cfg
const BLE_PROFILE_CFG hello_client_cfg =
{
/*.fine_timer_interval =*/ 1000, // ms
/*.default_adv =*/ HIGH_UNDIRECTED_DISCOVERABLE,
etc etc...
/*.encr_required =*/(SECURITY_ENABLED | SECURITY_REQUEST),
};
During APPLICATION_INIT(), the hello_client_cfg is passed to bleapp_set_cfg()
// Application initialization
APPLICATION_INIT()
{
bleapp_set_cfg((UINT8 *)hello_client_gatt_database,
sizeof(hello_client_gatt_database),
(void *)&hello_client_cfg,
(void *)&hello_client_puart_cfg,
(void *)&hello_client_gpio_cfg,
hello_client_create);
}
However, the application code does not refer to this configuration. Instead, the application refers to the default configuration pointer, bleprofile_p_cfg. For example, within hello_client_connection_up() there is source code as follows:
// if we connected as a master configure slave to enable notifications
if (hello_client.dev_info[cm_index].role == MASTER)
{
if (bleprofile_p_cfg->encr_required == 0)
{
UINT16 u16 = 1;
bleprofile_sendWriteReq(HANDLE_HELLO_SENSOR_CLIENT_CONFIGURATION_DESCRIPTOR, (UINT8 *)&u16, 2);
}
else
{
// following call will start bonding if devices are not pairing, or will request
// encryption if bonding has been established before
lesmp_setPtr(&hello_client.smp_info[cm_index]);
lesmp_startPairing(NULL);
ble_trace0("starting security");
}
// count number of slave connections
hello_client.num_slaves++;
}
else
{
hello_client.handle_to_master = con_handle;
// the code below may cause problem with iOS 6 and 7, fixed in iOS8
if ((bleprofile_p_cfg->encr_required & SECURITY_REQUEST) != 0)
{
lesmp_sendSecurityRequest();
}
// ask master to set preferred connection parameters
lel2cap_sendConnParamUpdateReq(100, 116, 0, 500);
}
- In this example, how is the hello_client_cfg being used?
- Are the members of the underlying bleprofile_p_cfg struct copied into this application defined struct under-the-hood? i.e. does hello_client_cfg point to bleprofile_p_cfg after the call to bleapp_set_cfg()?
- Why is the hello_client_connection_up() is not making use of the hello_client_cfg config?
- When the custom config is passed into bleapp_set_cfg(), does the stack make use of it?
- I see there is a function named bleprofile_CFGRegister() which is defined within bleprofile.h - should the application make use of this function to register an application-specific BLE_PROFILE_CFG which will be used by both the application and the stack?
/**
* \brief Register Configuration
* \ingroup bleprofile
*
* \details Application can call this function to overwrite default configuration.
*
* \param p_cfg Pointer to the BLE_PROFILE_CFG configuration structure.
*
*/
void bleprofile_CFGRegister(BLE_PROFILE_CFG *p_cfg);
An explanation would be gratefully received!
