New changes according to the review : Priority 0 for display, 1 for system, timer and ble host, and 2 for ble LL

In cases where any other task takes too much time to execute (it can happen in Display Task, see https://github.com/InfiniTimeOrg/InfiniTime/issues/825), the timer task does not have the opportunity to run fast enough to detect and debounce presses on the button.

This commit sets the following priorities:
 - [0] : Display  Task
 - [1] : Timer and System tasks
 - [2] : BLE Host
 - [3] : BLE LL

This way, we ensure that button presses will always be detected, even if the rendering of the display takes a huge amount of time.

src/FreeRTOSConfig.h

@@ -93,7 +93,7 @@
 
 /* Software timer definitions. */
 #define configUSE_TIMERS             1
-#define configTIMER_TASK_PRIORITY    (0)
+#define configTIMER_TASK_PRIORITY    (1)
 #define configTIMER_QUEUE_LENGTH     32
 #define configTIMER_TASK_STACK_DEPTH (300)
 

src/components/ble/NimbleController.cpp

@@ -77,6 +77,7 @@ int GAPEventCallback(struct ble_gap_event* event, void* arg) {
 
 void NimbleController::Init() {
   while (!ble_hs_synced()) {
+    vTaskDelay(10);
   }
 
   nptr = this;

src/libs/mynewt-nimble/porting/npl/freertos/src/nimble_port_freertos.c

@@ -38,7 +38,7 @@ nimble_port_freertos_init(TaskFunction_t host_task_fn)
      * since it has compatible prototype.
      */
     xTaskCreate(nimble_port_ll_task_func, "ll", configMINIMAL_STACK_SIZE + 200,
-                NULL, configMAX_PRIORITIES - 1, &ll_task_h);
+                NULL, 2, &ll_task_h);
 #endif
 
     /*
@@ -47,5 +47,5 @@ nimble_port_freertos_init(TaskFunction_t host_task_fn)
      * default queue it is just easier to make separate task which does this.
      */
     xTaskCreate(host_task_fn, "ble", configMINIMAL_STACK_SIZE + 600,
-                NULL, tskIDLE_PRIORITY + 1, &host_task_h);
+                NULL, 1, &host_task_h);
 }

src/systemtask/SystemTask.cpp

@@ -107,7 +107,7 @@ SystemTask::SystemTask(Drivers::SpiMaster& spi,
 
 void SystemTask::Start() {
   systemTasksMsgQueue = xQueueCreate(10, 1);
-  if (pdPASS != xTaskCreate(SystemTask::Process, "MAIN", 350, this, 0, &taskHandle)) {
+  if (pdPASS != xTaskCreate(SystemTask::Process, "MAIN", 350, this, 1, &taskHandle)) {
     APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
   }
 }