LPC1768之系統(tǒng)滴答定時器

/*	  *	main.c:  the main file *	NXP --> LPC1768**   *	Author	:	light					*	Date	:	2012-4-16  **/#includevolatile uint32_t msTicks;                            /* counts 1ms timeTicks *//*----------------------------------------------------------------------------SysTick_Handler*----------------------------------------------------------------------------*//Descriptions			：SysTick interrupt handleparameters			：NoneReturned value		：None*/void SysTick_Handler(void) {msTicks++;                        /* increment counter necessary in Delay() */}/*------------------------------------------------------------------------------delays number of tick Systicks (happens every 1 ms)*------------------------------------------------------------------------------*/__INLINE static void Delay (uint32_t dlyTicks) {uint32_t curTicks;	  curTicks = msTicks;	    // 獲取當(dāng)前值while ((msTicks - curTicks) < dlyTicks);	  //等待，即延時}/Descriptions			：Function that initializes LEDsparameters			：NoneReturned value		：None*/void DelayMs(unsigned int m){int i,j;for(i=m;i>0;i--){for(j=3000;j>0;j--);}}/Descriptions			：Function that initializes LEDsparameters			：NoneReturned value		：None*/void LedInit(void) {// PINSEL4,PINSEL5 設(shè)定P2.0 -- P2.32 端口功能（00，01,10,11）LPC_PINCON->PINSEL4 = 0XFC000000;			// p2.0--p2.13設(shè)置為IO LPC_PINCON->PINMODE4 = 0XFC000000;			// p2.0--p2.13設(shè)置為上拉電阻使能LPC_GPIO2->FIODIR = 0X000000FF;	 		// p2.0--p2.7設(shè)置為輸出}/Descriptions			：Function that LED onparameters			：n , which led is onReturned value		：None*/void LedNOn(unsigned int n){LPC_GPIO2->FIOSET = (1<FIOCLR = (1<=0;loc--){LedNOn(loc);Delay(1000);LedNOff(loc);Delay(1000);}}}