misc.c

主要用于液晶电视解码,内置51单片机,全部代码用C编写,编译环境为KEILC

#define _MISC_C_

#include <intrins.h>
#include "types.h"
#include "board.h"
#include "global.h"
#include "misc.h"
#include "mcu.h"
void Delay4us(void)
{
#if MCU_XTAL_CLK_MHZ>=20
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
  _nop_();
#endif
}

void ForceDelay1ms(WORD msNums)
{ WORD t;

  if (msNums>0)
    { while (msNums--)
        { t=DELAY_1MS_PERIOD;
          while (t--);
        }
    }
}

/////////////////////////////////////////
// delay 1 millisecond.
//
// Arguments: wValue - delay counter
/////////////////////////////////////////
#ifdef DELAY1MS_USE_TIMER0 // Use timer0
void Delay1ms(WORD wValue)
{
    if( EA )
    { // Use timer0
        if( wValue <= 1 )
            wValue = 2;
        g_wDelay1msCounter = wValue;
        while( g_wDelay1msCounter )
        {
        } // while
    }
    else
    {
        WORD wCount; // loop counter

        while (wValue--)
        {
            wCount = DELAY_1MS_PERIOD; // reset loop counter
            while (wCount--) ;
        } // while
    }
}
#else
void Delay1ms(WORD wValue)
{
    WORD wCount; // loop counter

    while (wValue--)
    {
        wCount = DELAY_1MS_PERIOD; // reset loop counter
        //wCount = g_ucTestCnt; // reset loop counter

        WatchDogClear();
        while (wCount--) ;
    } // while
}
#endif