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void osiDelayUS(volatile unsigned long timesUS)
{
	volatile unsigned long i;

//    unsigned long tick_cnt = 8;       // 24MHz, DelayUS(1000)ƽ��DelayUS(1) = 1.052us
#if (MCU_CLK == MCU_CLK_26MHz)
//    unsigned long tick_cnt_us = 3;       // 26MHz, DelayUS(1000)ƽ��DelayUS(1) = 1.028us
#define tick_cnt_us         3
#elif (MCU_CLK == MCU_CLK_120MHz)		/* #if (MCU_CLK == MCU_CLK_26MHz) */
#define tick_cnt_us         28
#endif		/* #if (MCU_CLK == MCU_CLK_26MHz) */
//    printf("tick_cnt = 0x%x\r\n", tick_cnt);
    while (timesUS --)
	{
		i = 0;
		while (i < tick_cnt_us)
		{
			i++;
		}
	}
}