os_cpu_c.c

ucos 移植 stm32 在iar5.2通过运行良好

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                         The Real-Time Kernel
*
*
*                                (c) Copyright 2006, Micrium, Weston, FL
*                                          All Rights Reserved
*
*                                           ARM Cortex-M3 Port
*
* File      : OS_CPU_C.C
* Version   : V2.86
* By        : Jean J. Labrosse
*             Brian Nagel
*
* For       : ARMv7M Cortex-M3
* Mode      : Thumb2
* Toolchain : IAR EWARM
*********************************************************************************************************
*/

#define  OS_CPU_GLOBALS
#include <ucos_ii.h>
#include "stm32f10x_lib.h"

/*
*********************************************************************************************************
*                                          LOCAL VARIABLES
*********************************************************************************************************
*/

#if OS_TMR_EN > 0
static  INT16U  OSTmrCtr;
#endif

/*
*********************************************************************************************************
*                                          SYS TICK DEFINES
*********************************************************************************************************
*/

#define  OS_CPU_CM3_NVIC_ST_CTRL    (*((volatile INT32U *)0xE000E010))   /* SysTick Ctrl & Status Reg. */
#define  OS_CPU_CM3_NVIC_ST_RELOAD  (*((volatile INT32U *)0xE000E014))   /* SysTick Reload  Value Reg. */
#define  OS_CPU_CM3_NVIC_ST_CURRENT (*((volatile INT32U *)0xE000E018))   /* SysTick Current Value Reg. */
#define  OS_CPU_CM3_NVIC_ST_CAL     (*((volatile INT32U *)0xE000E01C))   /* SysTick Cal     Value Reg. */
#define  OS_CPU_CM3_NVIC_PRIO_ST    (*((volatile INT8U  *)0xE000ED23))   /* SysTick Handler Prio  Reg. */

#define  OS_CPU_CM3_NVIC_ST_CTRL_COUNT                    0x00010000     /* Count flag.                */
#define  OS_CPU_CM3_NVIC_ST_CTRL_CLK_SRC                  0x00000004     /* Clock Source.              */
#define  OS_CPU_CM3_NVIC_ST_CTRL_INTEN                    0x00000002     /* Interrupt enable.          */
#define  OS_CPU_CM3_NVIC_ST_CTRL_ENABLE                   0x00000001     /* Counter mode.              */
#define  OS_CPU_CM3_NVIC_PRIO_MIN                               0xFF     /* Min handler prio.          */

/*
*********************************************************************************************************
*                                       OS INITIALIZATION HOOK
*                                            (BEGINNING)
*
* Description: This function is called by OSInit() at the beginning of OSInit().
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts should be disabled during this call.
*********************************************************************************************************
*/
#if OS_CPU_HOOKS_EN > 0 && OS_VERSION > 203
void  OSInitHookBegin (void)
{
#if OS_TMR_EN > 0
    OSTmrCtr = 0;
#endif
}
#endif

/*
*********************************************************************************************************
*                                       OS INITIALIZATION HOOK
*                                               (END)
*
* Description: This function is called by OSInit() at the end of OSInit().
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts should be disabled during this call.
*********************************************************************************************************
*/
#if OS_CPU_HOOKS_EN > 0 && OS_VERSION > 203
void  OSInitHookEnd (void)
{
}
#endif

/*
*********************************************************************************************************
*                                          TASK CREATION HOOK
*
* Description: This function is called when a task is created.
*
* Arguments  : ptcb   is a pointer to the task control block of the task being created.
*
* Note(s)    : 1) Interrupts are disabled during this call.
*********************************************************************************************************
*/
#if OS_CPU_HOOKS_EN > 0
void  OSTaskCreateHook (OS_TCB *ptcb)
{
#if OS_APP_HOOKS_EN > 0
    App_TaskCreateHook(ptcb);
#else
    (void)ptcb;                                  /* Prevent compiler warning                           */
#endif
}
#endif


/*
*********************************************************************************************************
*                                           TASK DELETION HOOK
*
* Description: This function is called when a task is deleted.
*
* Arguments  : ptcb   is a pointer to the task control block of the task being deleted.
*
* Note(s)    : 1) Interrupts are disabled during this call.
*********************************************************************************************************
*/
#if OS_CPU_HOOKS_EN > 0
void  OSTaskDelHook (OS_TCB *ptcb)
{
#if OS_APP_HOOKS_EN > 0
    App_TaskDelHook(ptcb);
#else
    (void)ptcb;                                  /* Prevent compiler warning                           */
#endif
}
#endif

/*
*********************************************************************************************************
*                                             IDLE TASK HOOK
*
* Description: This function is called by the idle task.  This hook has been added to allow you to do
*              such things as STOP the CPU to conserve power.
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts are enabled during this call.
*********************************************************************************************************
*/
#if OS_CPU_HOOKS_EN > 0 && OS_VERSION >= 251
void  OSTaskIdleHook (void)
{
#if OS_APP_HOOKS_EN > 0
    App_TaskIdleHook();
#endif
}
#endif

/*
*********************************************************************************************************
*                                           STATISTIC TASK HOOK
*
* Description: This function is called every second by uC/OS-II's statistics task.  This allows your
*              application to add functionality to the statistics task.
*
* Arguments  : none
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0
void  OSTaskStatHook (void)
{
#if OS_APP_HOOKS_EN > 0
    App_TaskStatHook();
#endif
}
#endif

/*
*********************************************************************************************************
*                                        INITIALIZE A TASK'S STACK
*
* Description: This function is called by either OSTaskCreate() or OSTaskCreateExt() to initialize the
*              stack frame of the task being created.  This function is highly processor specific.