Content originally posted in LPCWare by thomaswin on Thu Oct 20 02:25:48 MST 2011
Hi
I have problem on counting pulse using interrupt from lpc1114.
I using gpio2 counter.i use p2.1 for input and p3.3 for out put.
Do i need to change setting on timer32.c/gpio.c/IRQ-Handler?
My main program is as below.
#include "LPC11xx.h" /* LPC11xx definitions */
#include "clkconfig.h"
#include "gpio.h"
#include "config.h"
#include "timer32.h"
volatile uint32_t gpio2_counter = 0;
/* Main Program */
int main(void) {
init_timer32(0, TIME_INTERVAL);
enable_timer32(0);
GPIOInit();
GPIOSetDir(3, 3, 1);//led out
GPIOSetInterrupt( 2, 1, 0, 0, 0 );
GPIOIntEnable( 2, 1 );
GPIOSetValue(3, 3, 0);//starting off
while (1) /* Loop forever */
{
if(gpio2_counter <20&& gpio2_counter >10)//8 count pulse to lpc
{
GPIOSetValue(3, 3, 1);
}
if(gpio2_counter <30&& gpio2_counter >20)// 16 count pulse to lpc
{
GPIOSetValue(3, 3, 0);
}
if( gpio2_counter >30)
gpio2_counter=0;
/* Go to sleep to save power between timer interrupts */
__WFI();
}
}
