ucos移植到51单片机

/* ********************************************************************************************************* * uC/OS-II * The Real-Time Kernel * CORE FUNCTIONS * * (c) Copyright 1992-2007, Jean J. Labrosse, Weston, FL * All Rights Reserved * * File : OS_CORE.C * By : Jean J. Labrosse * Version : V2.85 * * LICENSING TERMS: * --------------- * uC/OS-II is provided in source form for FREE evaluation, for educational use or for peaceful research. * If you plan on using uC/OS-II in a commercial product you need to contact Micri�m to properly license * its use in your product. We provide ALL the source code for your convenience and to help you experience * uC/OS-II. The fact that the source is provided does NOT mean that you can use it without paying a * licensing fee. ********************************************************************************************************* */ #ifndef OS_MASTER_FILE #define OS_GLOBALS #include <ucos_ii.h> #endif /*$PAGE*/ /* ********************************************************************************************************* * MAPPING TABLE TO MAP BIT POSITION TO BIT MASK * * Note: Index into table is desired bit position, 0..7 * Indexed value corresponds to bit mask ********************************************************************************************************* */ INT8U const OSMapTbl[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80}; /* ********************************************************************************************************* * PRIORITY RESOLUTION TABLE * * Note: Index into table is bit pattern to resolve highest priority * Indexed value corresponds to highest priority bit position (i.e. 0..7) ********************************************************************************************************* */ INT8U const OSUnMapTbl[256] = { 0, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x00 to 0x0F */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x10 to 0x1F */ 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x20 to 0x2F */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x30 to 0x3F */ 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x40 to 0x4F */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x50 to 0x5F */ 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x60 to 0x6F */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x70 to 0x7F */ 7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x80 to 0x8F */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0x90 to 0x9F */ 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0xA0 to 0xAF */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0xB0 to 0xBF */ 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0xC0 to 0xCF */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0xD0 to 0xDF */ 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, /* 0xE0 to 0xEF */ 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0 /* 0xF0 to 0xFF */ }; /*$PAGE*/ /* ********************************************************************************************************* * FUNCTION PROTOTYPES ********************************************************************************************************* */ static void OS_InitEventList(void); static void OS_InitMisc(void); static void OS_InitRdyList(void); //static void OS_InitTaskIdle(void) reentrant; static void OSTaskIdle (void *p_arg) reentrant; #if OS_TASK_STAT_EN > 0 static void OS_InitTaskStat(void); #endif static void OS_InitTCBList(void); static void OS_SchedNew(void); /*$PAGE*/ /* ********************************************************************************************************* * INITIALIZATION * * Description: This function is used to initialize the internals of uC/OS-II and MUST be called prior to * creating any uC/OS-II object and, prior to calling OSStart(). * * Arguments : none * * Returns : none ********************************************************************************************************* */ /*$PAGE*/ /* ********************************************************************************************************* * ENTER ISR * * Description: This function is used to notify uC/OS-II that you are about to service an interrupt * service routine (ISR). This allows uC/OS-II to keep track of interrupt nesting and thus * only perform rescheduling at the last nested ISR. * * Arguments : none * * Returns : none * * Notes : 1) This function should be called ith interrupts already disabled * 2) Your ISR can directly increment OSIntNesting without calling this function because * OSIntNesting has been declared 'global'. * 3) You MUST still call OSIntExit() even though you increment OSIntNesting directly. * 4) You MUST invoke OSIntEnter() and OSIntExit() in pair. In other words, for every call * to OSIntEnter() at the beginning of the ISR you MUST have a call to OSIntExit() at the * end of the ISR. * 5) You are allowed to nest interrupts up to 255 levels deep. * 6) I removed the OS_ENTER_CRITICAL() and OS_EXIT_CRITICAL() around the increment because * OSIntEnter() is always called with interrupts disabled. ********************************************************************************************************* */ void OSIntEnter (void) reentrant { if (OSRunning == TRUE) { if (OSIntNesting < 255u) { OSIntNesting++; /* Increment ISR nesting level */ } } } /*$PAGE*/ /* ********************************************************************************************************* * EXIT ISR * * Description: This function is used to notify uC/OS-II that you have completed serviving an ISR. When * the last nested ISR has completed, uC/OS-II will call the scheduler to determine whether * a new, high-priority task, is ready to run. * * Arguments : none * * Returns : none * * Notes : 1) You MUST invoke OSIntEnter() and OSIntExit() in pair. In other words, for every call * to OSIntEnter() at the beginning of the ISR you MUST have a call to OSIntExit() at the * end of the ISR. * 2) Rescheduling is prevented when the scheduler is locked (see OS_SchedLock()) ********************************************************************************************************* */ void OSIntExit (void) reentrant { if (OSRunning == TRUE) { OS_ENTER_CRITICAL(); if (OSIntNesting > 0) { /* Prevent OSIntNesting from wrapping */ OSIntNesting--; } if