os_time

采用C++改写的uCOS-II,目标系统为MSP430系列CPU。

#ifndef  OS_MASTER_FILE
#include "linos.h"
#endif

void  OSTimeDly (INT16U ticks)
{
#if OS_CRITICAL_METHOD == 3                      /* Allocate storage for CPU status register           */
    OS_CPU_SR  cpu_sr;
#endif    
    INT8U      y;


    if (ticks > 0) {                             /* 0 means no delay!                                  */
        OS_ENTER_CRITICAL();
        y            =  OSTCBCur->OSTCBY;        /* Delay current task                                 */
        OSRdyTbl[y] &= ~OSTCBCur->OSTCBBitX;
        if (OSRdyTbl[y] == 0) {  
            OSRdyGrp &= ~OSTCBCur->OSTCBBitY;
        }
        OSTCBCur->OSTCBDly = ticks;              /* Load ticks in TCB                                  */
        OS_EXIT_CRITICAL();
        OS_Sched();                              /* Find next task to run!                             */
    }
}