main.c

来自「STR71X系列ARM微控制器原理与实践配套光盘」· C语言 代码 · 共 48 行

#include "main.h"

void __main(void)
{
#ifdef DEBUG
	debug();
#endif

	
	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);
	EIC_Init();

	TIM_PrescalerConfig(TIM0, 182);//set the prescaler value 182
	TIM_ITConfig(TIM0, TIM_TO_IT, ENABLE);// configure the TIM IT:TIM Timer Overflow interrupt

	EIC_FIQChannelConfig(T0TIMI_FIQChannel, ENABLE);//FIQ
	EIC_FIQConfig(ENABLE);// Enable FIQ interrupts

	
	RTC_PrescalerConfig(16384);
	RTC_FlagClear(RTC_OWIR);
	RTC_FlagClear(RTC_AIR);
	RTC_FlagClear(RTC_SIR);
	RTC_FlagClear(RTC_GIR);

	EIC_IRQChannelConfig(RTC_IRQChannel, ENABLE);
	EIC_IRQChannelPriorityConfig(RTC_IRQChannel, 1);//Configure the selected IRQ channel priority
	EIC_IRQConfig(ENABLE);

	RTC_ITConfig(RTC_SIT | RTC_GIT, ENABLE);

	TIM_CounterConfig(TIM0, TIM_START);

	while(1){};
}