fix ble priorities

Author: pwilkowski

src/nimble/porting/npl/freertos/src/nimble_port_freertos.c

@@ -41,6 +41,17 @@ static StackType_t hs_xStack[ NIMBLE_HS_STACK_SIZE ];
 static StaticTask_t hs_xTaskBuffer;
 #endif
 
+// configMAX_PRIORITIES - 1 is Tmr builtin task
+#ifndef NIMBLE_LL_PRIORITY
+#define NIMBLE_LL_PRIORITY (configMAX_PRIORITIES - 2)
+#endif
+#ifndef NIMBLE_BLE_PRIORITY
+#define NIMBLE_BLE_PRIORITY (configMAX_PRIORITIES - 3)
+#endif
+#ifndef NIMBLE_HOST_PRIORITY
+#define NIMBLE_HOST_PRIORITY (configMAX_PRIORITIES - 4)
+#endif
+
 static TaskHandle_t host_task_h = NULL;
 
 #ifdef ESP_PLATFORM
@@ -58,7 +69,7 @@ esp_err_t esp_nimble_enable(void *host_task)
      * default queue it is just easier to make separate task which does this.
      */
     xTaskCreatePinnedToCore(host_task, "nimble_host", NIMBLE_HS_STACK_SIZE,
-                            NULL, (configMAX_PRIORITIES - 4), &host_task_h, NIMBLE_CORE);
+                            NULL, NIMBLE_HOST_PRIORITY, &host_task_h, NIMBLE_CORE);
     return ESP_OK;
 
 }
@@ -112,15 +123,15 @@ nimble_port_freertos_init(TaskFunction_t host_task_fn)
      * since it has compatible prototype.
      */
     ll_task_h = xTaskCreateStatic(nimble_port_ll_task_func, "ll", NIMBLE_LL_STACK_SIZE,
-                                  NULL, configMAX_PRIORITIES, ll_xStack, &ll_xTaskBuffer);
+                                  NULL, NIMBLE_LL_PRIORITY, ll_xStack, &ll_xTaskBuffer);
 #endif
     /*
      * Create task where NimBLE host will run. It is not strictly necessary to
      * have separate task for NimBLE host, but since something needs to handle
      * default queue it is just easier to make separate task which does this.
      */
     host_task_h = xTaskCreateStatic(host_task_fn, "ble", NIMBLE_HS_STACK_SIZE,
-                                    NULL, (configMAX_PRIORITIES - 1), hs_xStack, &hs_xTaskBuffer);
+                                    NULL, NIMBLE_BLE_PRIORITY, hs_xStack, &hs_xTaskBuffer);
 }
 
 void