timer_tc1_interrupt.c

范例程序 SONiX

#include <sn8p2758.h>


unsigned int tc1_buf;


void main (void)
{

	FTC1ENB=0;
						
	TC1M=0x20; 		//Fcpu/64											

	TC1C=0x64;		//10ms	interrupt Once 	
	TC1R=0x64;				

	FALOAD1=1;		//enable auto re-load
														
	FTC1ENB=1;		// Enable TC1 timer
	FTC1IEN=1;  	// Enable TC1 interrupt
	FTC1IRQ=0;		// Clean TC1 interrupt request flag

	FGIE=1;			// all interrupt operation		
	while (1)
	{
//==================================================================
//	
//	User code 
//
//==================================================================
	}		
}								

	
//===============================================================================================
//    TC1 set 10ms interval time for TC1 interrupt.   X'tal:4M  Fcpu=Fosc/4  TC1RATE=010 (Fcpu/64) 
//===============================================================================================
//
//	TC1 initial value = 256-(TC1 interrupt interval time*clocl)
//			 = 256-(10ms*4MHz /4 /64)
//			 = 256-(0.01*4*1000000/4/64)
//			 = 100
//			 = 64H
//


__interrupt isr (void)
{
	if ((FTC1IEN==1)&&(FTC1IRQ==1))
	{
	  FTC1IRQ=0;
	  tc1_buf++;
	}

}