Merge branch 'freertos'

1 files changed, 110 insertions, 0 deletions

diff --git a/src/gos/freertos.h b/src/gos/freertos.h
new file mode 100644
index 00000000..ccda4cbd
--- /dev/null
+++ b/src/gos/freertos.h
@@ -0,0 +1,110 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+/**
+ * @file    src/gos/freertos.h
+ * @brief   GOS - Operating System Support header file for FreeRTOS.
+ */
+
+#ifndef _GOS_FREERTOS_H
+#define _GOS_FREERTOS_H
+
+#if GFX_USE_OS_FREERTOS
+
+#include "FreeRTOS.h"
+#include "FreeRTOSConfig.h"
+#include "semphr.h"
+#include "task.h"
+
+/*===========================================================================*/
+/* Type definitions                                                          */
+/*===========================================================================*/
+
+/**
+ * bool_t,
+ * int8_t, uint8_t,
+ * int16_t, uint16_t,
+ * int32_t, uint32_t,
+ * size_t
+ * TRUE, FALSE
+ * are already defined by FreeRTOS
+ */
+#define TIME_IMMEDIATE		0
+#define TIME_INFINITE		((delaytime_t)-1)
+typedef int8_t				bool_t;
+typedef uint32_t			delaytime_t;
+typedef portTickType		systemticks_t;
+typedef int32_t				semcount_t;
+typedef void				threadreturn_t;
+typedef portBASE_TYPE		threadpriority_t;
+
+#define MAX_SEMAPHORE_COUNT	((semcount_t)(((unsigned long)((semcount_t)(-1))) >> 1))
+#define LOW_PRIORITY		0
+#define NORMAL_PRIORITY		configMAX_PRIORITIES/2
+#define HIGH_PRIORITY		configMAX_PRIORITIES-1
+
+/* FreeRTOS will allocate the stack when creating the thread, so pass the size instead of a working area */
+#define DECLARE_THREAD_STACK(name, sz)			size_t *name = (size_t *)sz
+#define DECLARE_THREAD_FUNCTION(fnName, param)	threadreturn_t fnName(void *param)
+portTickType MS2ST(portTickType ms);
+
+typedef struct {
+	xSemaphoreHandle	sem;
+	semcount_t			limit;
+	semcount_t  		counter;
+} gfxSem;
+
+typedef xSemaphoreHandle		gfxMutex;
+typedef xTaskHandle*				gfxThreadHandle;
+
+/*===========================================================================*/
+/* Function declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define gfxHalt(msg)				{}
+#define gfxExit()					{}
+#define gfxAlloc(sz)				pvPortMalloc(sz)
+#define gfxFree(ptr)				vPortFree(ptr)
+#define gfxYield()					taskYIELD()
+#define gfxSystemTicks()			xTaskGetTickCount()
+#define gfxMillisecondsToTicks(ms)	MS2ST(ms)
+#define gfxSystemLock()				{}
+#define gfxSystemUnlock()			{}
+
+void gfxMutexInit(xSemaphoreHandle* s);
+#define gfxMutexDestroy(pmutex)		vSemaphoreDelete(*pmutex)
+#define gfxMutexEnter(pmutex)		xSemaphoreTake(*pmutex,portMAX_DELAY)
+#define gfxMutexExit(pmutex)		xSemaphoreGive(*pmutex)
+
+void *gfxRealloc(void *ptr, size_t oldsz, size_t newsz);
+void gfxSleepMilliseconds(delaytime_t ms);
+void gfxSleepMicroseconds(delaytime_t ms);
+
+void gfxSemInit(gfxSem* psem, semcount_t val, semcount_t limit);
+void gfxSemDestroy(gfxSem* psem);
+bool_t gfxSemWait(gfxSem* psem, delaytime_t ms);
+bool_t gfxSemWaitI(gfxSem* psem);
+void gfxSemSignal(gfxSem* psem);
+void gfxSemSignalI(gfxSem* psem);
+#define gfxSemCounterI(psem)		((psem)->counter)
+#define gfxSemCounter(psem)			((psem)->counter)
+gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_t prio, DECLARE_THREAD_FUNCTION((*fn),p), void *param);
+
+#define gfxThreadWait(thread)		{} // never used, not imlpemented
+#define gfxThreadMe()				{} // never used, not implemented
+#define gfxThreadClose(thread)		{}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GFX_USE_OS_FREERTOS */
+#endif /* _GOS_CHIBIOS_H */