adding in ecen425 RTOS final lab

ecen425/yakk.h

@@ -0,0 +1,100 @@
+#ifndef YAKK_H
+#define YAKK_H
+
+#include "yaku.h"
+
+#define null 0
+#define IDLETASKSTACKSIZE 512
+
+//Error Codes
+#define NEW_TASK_FAILED 1
+#define READY_QUEUE_EMPTY 2
+#define NEW_SEM_FAILED 3
+#define NEW_QUEUE_FAILED 4
+
+//Kernel Data Structures
+
+enum TaskState {T_BLOCKED, T_READY, T_RUNNING};
+enum KernelState {K_BLOCKED, K_RUNNING};
+
+typedef struct TCB {
+	unsigned int tid;
+	unsigned char priority;
+	void* stackPointer;	
+	enum TaskState state;	
+	unsigned int delayCount;
+	struct TCB* next;
+	struct TCB* prev;
+} TCB;
+
+typedef struct TaskBlock {
+	TCB TCBPool[MAX_TASKS+1];
+	unsigned int nextFreeTCB;	
+} TaskBlock;
+
+typedef struct PriorityQueue {
+	TCB* head;
+	TCB* tail;
+	unsigned int size;
+} PriorityQueue;
+
+typedef struct DelayQueue {
+	TCB* head;
+	unsigned int size;
+} DelayQueue;
+
+typedef struct Semaphore {
+	int value;
+	PriorityQueue queue;
+} YKSEM;
+
+typedef struct SemBlock {
+	YKSEM SemPool[MAX_SEMS];
+	unsigned int nextFreeSem;
+} SemBlock;
+
+typedef struct MessageQueue {
+	void** messages;
+	unsigned int currentSize;
+	unsigned int maxSize;
+	PriorityQueue queue;
+} YKQ;
+
+typedef struct MessageQueueBlock {
+	YKQ QueuePool[MAX_QUEUES];
+	unsigned int nextFreeQueue;
+} MsgQueueBlock;
+
+//Kernel API
+void YKInitialize(void);
+void YKEnterMutex(void);
+void YKExitMutex(void);
+void YKIdleTask(void);
+void YKNewTask(void (* task) (void), void *taskStack, unsigned char priority);
+void YKDelayTask(unsigned count);
+void YKEnterISR(void);
+void YKExitISR(void);
+unsigned int YKGetISRCallDepth(void);
+void YKScheduler(void);
+void YKDispatcher(TCB* readyTask);
+void YKTickHandler(void);
+YKSEM* YKSemCreate(int initialValue);
+void YKSemPend(YKSEM* semaphore);
+void YKSemPost(YKSEM* semaphore);
+YKQ* YKQCreate(void** start, unsigned size);
+void* YKQPend(YKQ* queue);
+int YKQPost(YKQ* queue, void* msg);
+//YKEVENT* YKEventCreate(unsigned initialValue);
+//void YKEventSet(YKEVENT* event, unsigned eventMask);
+//void YKEVentReset(YKEVENT* event, unsigned eventMask);
+TCB* getNewTCB(void);
+YKSEM* getNewSem(void);
+YKQ* getNewQueue(void);
+void YKRun(void);
+unsigned int getYKCtxSwCount();
+unsigned int getYKIdelCount(); 
+void setYKIdelCount(int value);
+void setYKCtxSwCount(int value);
+unsigned int getYKTickNum();
+
+#endif