main.c

STR71X系列ARM微控制器原理与实践配套光盘

#include "LED.h"

void __main(void)
{	
#ifdef DEBUG
	debug();//Initialize the pointers to peripherals
#endif

	
	
	
    //configure clocks
    RCCU_MCLKConfig(RCCU_DEFAULT);					// Configure MCLK = RCLK
	RCCU_FCLKConfig(RCCU_RCLK_2);					// Configure FCLK = RCLK / 2
	RCCU_PCLKConfig(RCCU_RCLK_2);					// Configure PCLK = RCLK / 2
	RCCU_PLL1Config(RCCU_PLL1_Mul_12, RCCU_Div_2);	// Configure the PLL1 ( * 12 , / 2 )
	
	while(RCCU_FlagStatus(RCCU_PLL1_LOCK) == RESET);// Wait PLL to lock
	RCCU_RCLKSourceConfig(RCCU_PLL1_Output);		// Select PLL1_Output as RCLK clock
	// at this step the CKOUT signal should be equal to 48 Mhz
 
    LED_Init();
    
	TIM_Init(TIM0);
	
    TIM_PrescalerConfig(TIM0,25);
    TIM_CounterConfig(TIM0, TIM_START);
	
	//查询方式
	while(1){
		FlagStatus TOF_Status;
		TOF_Status = TIM_FlagStatus (TIM0, TIM_TOF);
		if(TOF_Status==SET){
			LED_Set(LED3|LED4|LED5,LED_TOGGLE);
			TIM_FlagClear (TIM0, TIM_TOF);
		};
	}
}