void Delay(u32 nCount)
{
TimingDelay = nCount;
/* Enable the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Enable);
while(TimingDelay != 0);
/* Disable the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Disable);
/* Clear the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Clear);
