TIMER PROGRAMS FOR LPC2129

                 TIMER PROGRAMS FOR LPC2129


program for creating interpret using match registers?


#include<lpc21xx.h>
void delay(int count)
{
int i,j;
for(i=0;i<count;i++)
{
for(j=0;j<1000;j++)
{
}
}
}
int main()           
{
 IODIR1|=(0xff<<17);
T0TCR=1<<0;
T0PR=14;
T0MR0=5000000;
T0MR1=10000000;
T0MR2=15000000;
T0MR3=20000000;
T0MCR=(1<<0)|(1<<3)|(1<<6)|(1<<9)|(1<<10);// only interpet ,reset and set
while(1)
{
if(T0IR&(1<<0))
{
IOSET1=(1<<17);
delay(500);
IOCLR1=(1<<17);
delay(500);
}
T0IR=(1<<0);
if(T0IR&(1<<1))
{
IOSET1=(3<<17);
delay(500);      
IOCLR1=(3<<17);
delay(500);
}
T0IR=(1<<1);
if(T0IR&(1<<2))
{
IOSET1=(7<<17);
delay(500);
IOCLR1=(7<<17);
delay(500);
}
T0IR=(1<<2);
if(T0IR&(1<<3))
{
IOSET1=(0x0f<<17);
delay(500);
IOCLR1=(0x0f<<17);
delay(500);
}
T0IR=(1<<3);
}
}

Blinking led without using delay function?


 #include<lpc21xx.h>

int main()           
{
IODIR1|=(0xff<<17);
T0TCR=1<<0;
T0PR=14;
T0MR0=500000;
T0MR1=5000000;
T0MCR=(1<<0)|(1<<3)|(1<<4);// only interpet ,reset and set
while(1)
{
if(T0IR&(1<<0))
{
IOSET1=(7<<17);
T0IR=(1<<0);
}
if(T0IR&(1<<1))
{
IOCLR1=(7<<17);
T0IR=(1<<1);
}
}
}



Blinking led with using delay function?

#include<lpc21xx.h>
void delay(int count)
{
int i,j;
for(i=0;i<count;i++)
{
for(j=0;j<1000;j++)
{
}
}
}
int main()
{
int i;
IODIR1|=h(0xff<<17);
T0TCR=1<<0;
T0PR=14;
T0MR0=5000000;
T0MCR=(1<<0)|(1<<1);
while(1)
{
if(T0IR&(1<<0))
{
for(i=17;i<25;i++)
{
IOSET1=(1<<i+1);
delay(500);
IOCLR1=(1<<i);
delay(500);
}
T0IR=(1<<0);
}
}
}


Hardware delay using the timer? 



#include<lpc21xx.H>
#define PRESCALE 15000
void delay(int mill)
{
T0TCR=(1<<1);     
T0TCR=(1<<0);
while(T0TC<mill)
{
T0TCR=0x00;
}
}
int main()
{
IODIR1|=(1<<17);
T0TCR=(1<<0);
T0PR=PRESCALE-1;
T0MR0=5000000;
T0MCR|=(1<<0)|(1<<1);
while(1)
{
IOSET1=(1<<17);
delay(1000);
IOCLR1=(1<<17);
delay(1000);
}
 }



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