feat(radio): OS compatibility layer (#5840)

radio/src/os/task_freertos.cpp

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) EdgeTX
+ *
+ * Based on code named
+ *   opentx - https://github.com/opentx/opentx
+ *   th9x - http://code.google.com/p/th9x
+ *   er9x - http://code.google.com/p/er9x
+ *   gruvin9x - http://code.google.com/p/gruvin9x
+ *
+ * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "task.h"
+
+static void _task_stub(void* p)
+{
+  task_func_t func = (task_func_t)p;
+  func();
+}
+
+void task_create(task_handle_t* h, task_func_t func, const char* name,
+                 void* stack, unsigned stack_size, unsigned priority)
+{
+  h->_stack_size = stack_size;
+  h->_rtos_handle =
+      xTaskCreateStatic(_task_stub, name, stack_size, (void*)func, priority,
+                        (StackType_t*)stack, &h->_task_struct);
+}
+
+unsigned task_get_stack_usage(task_handle_t* h)
+{
+  return uxTaskGetStackHighWaterMark(h->_rtos_handle);
+}
+
+unsigned task_get_stack_size(task_handle_t* h)
+{
+  return h->_stack_size * sizeof(StackType_t);
+}
+
+void mutex_create(mutex_handle_t* h)
+{
+  h->_rtos_handle = xSemaphoreCreateMutexStatic(&h->_mutex_struct);
+  mutex_unlock(h);
+}
+
+static inline bool _lock_mutex(mutex_handle_t* h, TickType_t xTickToWait)
+{
+  return xSemaphoreTake(h->_rtos_handle, xTickToWait) == pdTRUE;
+}
+
+bool mutex_lock(mutex_handle_t* h) { return _lock_mutex(h, portMAX_DELAY); }
+bool mutex_trylock(mutex_handle_t* h) { return _lock_mutex(h, (TickType_t)0); }
+void mutex_unlock(mutex_handle_t* h) { xSemaphoreGive(h->_rtos_handle); }