FHSS WS: Check if BC schedule is stopped before computing timeout del…

…ay (ARMmbed#2469)

source/Service_Libs/fhss/fhss_ws.c

@@ -297,6 +297,15 @@ static void fhss_broadcast_handler(const fhss_api_t *fhss_api, uint16_t delay)
     if (!fhss_structure) {
         return;
     }
+
+    if (fhss_structure->ws->fhss_configuration.fhss_bc_dwell_interval == 0 || fhss_structure->ws->fhss_configuration.fhss_broadcast_interval == 0) {
+        // stop broadcast schedule
+        fhss_structure->ws->is_on_bc_channel = false;
+        fhss_structure->ws->synchronization_time = 0;
+        fhss_structure->ws->broadcast_timer_running = false;
+        return;
+    }
+
     int32_t delay_us = fhss_structure->callbacks.read_timestamp(fhss_structure->fhss_api) - fhss_structure->ws->next_bc_timeout;
     // Assume this was initial call for this function without timer
     if (!fhss_structure->ws->bc_slot && !fhss_structure->ws->next_bc_timeout) {
@@ -332,14 +341,6 @@ static void fhss_broadcast_handler(const fhss_api_t *fhss_api, uint16_t delay)
         fhss_structure->ws->bc_slot %= fhss_structure->number_of_channels;
     }
 
-
-    if (fhss_structure->ws->fhss_configuration.fhss_bc_dwell_interval == 0 || fhss_structure->ws->fhss_configuration.fhss_broadcast_interval == 0) {
-        // stop broadcast schedule
-        fhss_structure->ws->is_on_bc_channel = false;
-        fhss_structure->ws->synchronization_time = 0;
-        fhss_structure->ws->broadcast_timer_running = false;
-        return;
-    }
     if (fhss_structure->ws->is_on_bc_channel == false) {
         fhss_ws_start_timer(fhss_structure, MS_TO_US(fhss_structure->ws->fhss_configuration.fhss_bc_dwell_interval) - (delay_us * fhss_structure->platform_functions.fhss_resolution_divider), fhss_broadcast_handler);
         fhss_structure->ws->is_on_bc_channel = true;