STM32wb55rg does not update aci_hal_get_link_status despite notification

[PierreL]

Hello

For now, I have a Bluetooth application that sends data through a custom app with notify.

I see my device on the ST bluetooth tool box with my data.

However, to update my application, I want to send data only if I am correctly connected to my phone to not miss data.

I tried to work with aci_hal_get_link_status() function but the status stay at 0.

Here's a snippet of my code :

uint8_t link_status = 0;
uint16_t link_connection_handle = 0;
aci_hal_get_link_status(&link_status,&link_connection_handle);
main_CreateBufferBle("color:red\n size:1.5\n length:100 \n",0,count);
Custom_APP_Send_Data(0);

 So I do see the data on my phone but the link status and link connection handle stay at 0.

I haven't found an example of using this function so I might use it wrongly.

Kind regards,

Pierre Lobert

[PierreL]

I have found that I misuse it but it still does not work

I change like this :

uint8_t link_status[8];
uint16_t link_handles[8];
tBleStatus status;

foo()
{
status = aci_hal_get_link_status(link_status, link_handles);
main_CreateBufferBle("color:red\n size:1.5\n length:100 \n",0,count);
Custom_APP_Send_Data(0);
}

With this, status = 1, it came from the line

if ( resp.Status )
    return resp.Status;

inside aci_hal_get_link_status

[PierreL · Accepted solution]

To check if the device is connected you can use in custom_app.c the switch case with the event CUSTOM_CONN_HANDLE_EVT and CUSTOM_DISCON_HANDLE_EVT. Here you can add some flag t know if you are connected or not.

Concerning the advertising. To cut the connection and the advertising you can use these two function :

hci_disconnect(CurrentConnectionHandle,0x13);
UTIL_SEQ_SetTask(1 << CFG_TASK_ADV_CANCEL_ID, CFG_SCH_PRIO_0);

And to restart the advertising
`APP_BLE_Init();`
That maybe not the best option but these are the option we found that work