On Wed, May 03, 2017 at 10:59:59AM -0700, Pritish Gandhi wrote: > Hi All, > Just wanted to give an update to the community on the status of trying to > start the GATT server after the OS is initialized. > > to ble_hs.c > @@ -606,5 +603,7 @@ ble_hs_init(void) > /* Configure the HCI transport to communicate with a host. */ > ble_hci_trans_cfg_hs(ble_hs_hci_rx_evt, NULL, ble_hs_rx_data, NULL); > > +#if 0 /* Let the Application set the queue and start the BLE stack */ > ble_hs_evq_set(os_eventq_dflt_get()); > +#endif > }
Is there a particular reason you removed the call to ble_hs_evq_set(), rather than the call to ble_hs_start()? I think it is preferable to keep ble_hs_evq_set() here, and just hold off on starting the host. If some other package tries to use the host before its eventq is set, it will result in a null pointer dereference. > Then, I just have to call ble_hs_evq_set() with my ble thread's queue after > registering my GATT services. > > The next thing I need to figure out though, is how to remove registered > GATT services and add new ones after the GATT server has started. > I think ble_hs_sched_reset() might work, if I move its function definition > from src/ble_hs_priv.h to include/ble_hs.h. > I haven't tried this out yet though. Will get to it soon. Unfortunately, I don't think ble_hs_sched_reset() will work here. That function just resets the controller and connection / procedure lists, but it does not have any effect on the registered GATT services.] I haven't tried it, but I think the following sequence should do the trick: 1. Register your new services with ble_gatts_add_svcs(). 2. Call ble_gatts_start() ble_gatts_start() should already get called at startup as soon as the host starts. When this happens, the registered services get exposed to BLE peers, and the "working set" of services is cleared. This is why you can just start adding new services in step 1; the working set has been cleared, so you are starting from scratch. When you call ble_gatts_start() in step 2, the previously-exported services get replaced with the new ones. Chris
