FHSS: Prevent changing unicast channel when broadcast is active

- Switches to new unicast channel after broadcast channel

Author: Jarkko Paso

source/Service_Libs/fhss/fhss_ws.c

@@ -94,6 +94,11 @@ static void fhss_broadcast_handler(const fhss_api_t *fhss_api, uint16_t delay)
         uint32_t timeout = (fhss_structure->fhss_conf.fhss_ws_configuration.fhss_broadcast_interval - fhss_structure->fhss_conf.fhss_ws_configuration.fhss_bc_dwell_interval) * 1000;
         fhss_start_timer(fhss_structure, timeout, fhss_broadcast_handler);
         fhss_structure->ws->is_on_bc_channel = false;
+        // Should return to own (unicast) listening channel after broadcast channel
+        fhss_structure->callbacks.change_channel(fhss_structure->fhss_api, fhss_structure->rx_channel);
+#ifdef FHSS_CHANNEL_DEBUG
+    tr_info("%"PRIu32" UC %u", fhss_structure->platform_functions.fhss_get_timestamp(fhss_structure->fhss_api), fhss_structure->rx_channel);
+#endif /*FHSS_CHANNEL_DEBUG*/
     }
 }
 
@@ -136,6 +141,10 @@ static void fhss_ws_update_uc_channel_callback(fhss_structure_t *fhss_structure)
     } else if (fhss_structure->ws->channel_function == WS_VENDOR_DEF_CF) {
         //TODO: Callback to get channel schedule from application
     }
+    // Do not switch unicast channel when broadcast channel is active.
+    if (fhss_structure->ws->is_on_bc_channel == true) {
+        return;
+    }
 #ifdef FHSS_CHANNEL_DEBUG
     tr_info("%"PRIu32" UC %u %u", fhss_structure->platform_functions.fhss_get_timestamp(fhss_structure->fhss_api), next_channel, fhss_structure->ws->uc_slot);
 #endif /*FHSS_CHANNEL_DEBUG*/