I'm trying to implement a BLE task in my FreeRTOS application with the X-Nucleo-BNRG2A1 shield. I completed the BLE application (X-Cube-BLE2 package) without FreeRTOS and it has been working fine. For implementing the FreeRTOS, I have been looking into the BLE_HeartRateFreeRTOS example for reference. It looks like the hci_user_evt_proc() function is different in the BLE_HeartRateFreeRTOS example and the X-Cube-BLE2 default example. The BLE_HeartRateFreeRTOS hci_user_evt_proc() has a the following comment:
/**
* Up to release version v1.2.0, a while loop was implemented to read out events from the queue as long as
* it is not empty. However, in a bare metal implementation, this leads to calling in a "blocking" mode
* hci_user_evt_proc() as long as events are received without giving the opportunity to run other tasks
* in the background.
* From now, the events are reported one by one. When it is checked there is still an event pending in the queue,
* a request to the user is made to call again hci_user_evt_proc().
* This gives the opportunity to the application to run other background tasks between each event.
*/
Moreover, the hci_user_evt_proc() function is called inside the HciUserEvtProcess() task where it waits for a Thread Flag. The Thread Flag is called from hci_notify_asynch_evt callback function. It looks like the hci_notify_asynch_evt function is also different from the X-Cube-BLE2 package. FYI:
static void HciUserEvtProcess(void *argument)
{
UNUSED(argument);
for(;;)
{
osThreadFlagsWait( 1, osFlagsWaitAny, osWaitForever);
hci_user_evt_proc( );
}
}
void hci_notify_asynch_evt(void* pdata)
{
UNUSED(pdata);
osThreadFlagsSet( HciUserEvtProcessId, 1 );
return;
}
My question is, how do I implement FreeRTOS with my X-Nucleo-BLE2 package as the library files are different. Should I include the hci_user_evt_proc() inside a task with same priority with the other tasks so that other tasks will not be blocked? Or is there an update that I'm missing?
Looking for expert helps. @Sebastien DENOUAL I really appreciated your help in my previous application. Can you provide you expert advice once again?
