Adding support for NIOS-II platform

docs/releases.txt

@@ -26,6 +26,7 @@ FIX:		Fixing issue in touchscreen calibration code
 FEATURE:	Added GFX_OS_PRE_INIT_FUNCTION for early hardware initialization
 FIX:		Fixing GTIMER for high clock rate devices
 FEATURE:	Added GFX_COMPILER_KEIL and GFX_COMPILER_ARMCC macros
+FEATURE:	Added support for NIOS-II platform
 
 
 *** Release 2.3 ***

gfxconf.example.h

@@ -38,6 +38,7 @@
 //#define GFX_USE_OS_KEIL                              FALSE
 //#define GFX_USE_OS_CMSIS                             FALSE
 //#define GFX_USE_OS_RAW32                             FALSE
+//#define GFX_USE_OS_NIOS                              FALSE
 //    #define INTERRUPTS_OFF()                         optional_code
 //    #define INTERRUPTS_ON()                          optional_code
 

src/gos/gos.h

@@ -478,6 +478,8 @@
  	#include "gos_cmsis.h"
 #elif GFX_USE_OS_KEIL
  	#include "gos_keil.h"
+#elif GFX_USE_OS_NIOS
+ 	#include "gos_nios.h"
 #else
 	#error "Your operating system is not supported yet"
 #endif

src/gos/gos.mk

@@ -13,6 +13,7 @@ GFXSRC +=   $(GFXLIB)/src/gos/gos_chibios.c	\
 			$(GFXLIB)/src/gos/gos_rawrtos.c \
 			$(GFXLIB)/src/gos/gos_arduino.c \
 			$(GFXLIB)/src/gos/gos_cmsis.c \
+			$(GFXLIB)/src/gos/gos_nios.c \
 			$(GFXLIB)/src/gos/gos_x_threads.c \
 			$(GFXLIB)/src/gos/gos_x_heap.c
 

src/gos/gos_mk.c

@@ -15,5 +15,6 @@
 #include "gos_rawrtos.c"
 #include "gos_win32.c"
 #include "gos_cmsis.c"
+#include "gos_nios.c"
 #include "gos_x_threads.c"
 #include "gos_x_heap.c"

src/gos/gos_nios.c

@@ -0,0 +1,64 @@
+/*
+ * 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
+ */
+
+#include "../../gfx.h"
+
+#if GFX_USE_OS_NIOS
+
+void _gosHeapInit(void);
+void _gosThreadsInit(void);
+
+/*********************************************************
+ * Initialise
+ *********************************************************/
+
+void _gosInit(void)
+{
+	// Set up the heap allocator
+	_gosHeapInit();
+
+	// Start the scheduler
+	_gosThreadsInit();
+}
+
+void _gosDeinit(void)
+{
+}
+
+void gfxHalt(const char *msg)
+{
+	volatile uint32_t dummy;
+
+	(void)msg;
+
+	while(1) {
+		dummy++;
+	}
+}
+
+void gfxExit(void) {
+	volatile uint32_t dummy;
+
+	while(1) {
+		dummy++;
+	}
+}
+#include <stdio.h>
+systemticks_t gfxSystemTicks(void)
+{
+	volatile alt_u32 ticks = alt_nticks();
+
+	printf("Ticks: %d\r\n", ticks);
+	return ticks;
+}
+
+systemticks_t gfxMillisecondsToTicks(delaytime_t ms)
+{
+	return ms;
+}
+
+#endif /* GFX_USE_OS_NIOS */

src/gos/gos_nios.h

@@ -0,0 +1,44 @@
+/*
+ * 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
+ */
+
+#ifndef _GOS_NIOS_H
+#define _GOS_NIOS_H
+
+#if GFX_USE_OS_NIOS
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <sys/alt_alarm.h>
+
+typedef alt_u32 systemticks_t;
+typedef alt_u32 delaytime_t;
+typedef unsigned char bool_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void gfxHalt(const char* msg);
+void gfxExit(void);
+systemticks_t gfxSystemTicks(void);
+systemticks_t gfxMillisecondsToTicks(delaytime_t ms);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+// Use the generic thread handling and heap handling
+#define GOS_NEED_X_THREADS	TRUE
+#define GOS_NEED_X_HEAP		TRUE
+
+#include "gos_x_threads.h"
+#include "gos_x_heap.h"
+
+#endif /* GFX_USE_OS_NIOS */
+#endif /* _GOS_NIOS_H */

src/gos/gos_options.h

@@ -97,6 +97,13 @@
 	#ifndef GFX_USE_OS_KEIL
 		#define GFX_USE_OS_KEIL			FALSE
 	#endif
+	/**
+	 * @brief   Use NIOS-II
+	 * @details	Defaults to FALSE
+	 */
+	#ifndef GFX_USE_OS_NIOS
+		#define GFX_USE_OS_NIOS			FALSE
+	#endif
 /**
  * @}
  *

src/gos/gos_rules.h

@@ -16,7 +16,7 @@
 #ifndef _GOS_RULES_H
 #define _GOS_RULES_H
 
-#if !GFX_USE_OS_CHIBIOS && !GFX_USE_OS_WIN32 && !GFX_USE_OS_LINUX && !GFX_USE_OS_OSX && !GFX_USE_OS_RAW32 && !GFX_USE_OS_FREERTOS && !GFX_USE_OS_ECOS && !GFX_USE_OS_RAWRTOS && !GFX_USE_OS_ARDUINO && !GFX_USE_OS_CMSIS && !GFX_USE_OS_KEIL
+#if !GFX_USE_OS_CHIBIOS && !GFX_USE_OS_WIN32 && !GFX_USE_OS_LINUX && !GFX_USE_OS_OSX && !GFX_USE_OS_RAW32 && !GFX_USE_OS_FREERTOS && !GFX_USE_OS_ECOS && !GFX_USE_OS_RAWRTOS && !GFX_USE_OS_ARDUINO && !GFX_USE_OS_CMSIS && !GFX_USE_OS_KEIL && !GFX_USE_OS_NIOS
 	#if GFX_DISPLAY_RULE_WARNINGS
 		#warning "GOS: No Operating System has been defined. ChibiOS (GFX_USE_OS_CHIBIOS) has been turned on for you."
 	#endif
@@ -24,7 +24,7 @@
 	#define GFX_USE_OS_CHIBIOS	TRUE
 #endif
 
-#if GFX_USE_OS_CHIBIOS + GFX_USE_OS_WIN32 + GFX_USE_OS_LINUX + GFX_USE_OS_OSX + GFX_USE_OS_RAW32 + GFX_USE_OS_FREERTOS + GFX_USE_OS_ECOS + GFX_USE_OS_RAWRTOS + GFX_USE_OS_ARDUINO + GFX_USE_OS_CMSIS + GFX_USE_OS_KEIL != 1 * TRUE
+#if GFX_USE_OS_CHIBIOS + GFX_USE_OS_WIN32 + GFX_USE_OS_LINUX + GFX_USE_OS_OSX + GFX_USE_OS_RAW32 + GFX_USE_OS_FREERTOS + GFX_USE_OS_ECOS + GFX_USE_OS_RAWRTOS + GFX_USE_OS_ARDUINO + GFX_USE_OS_CMSIS + GFX_USE_OS_KEIL + GFX_USE_OS_NIOS != 1 * TRUE
 	#error "GOS: More than one operation system has been defined as TRUE."
 #endif