Hello,
I try to make a simple demo program for interrupt TIMER on my DE2.
Every second the LEDs on "SORTIES" port whill change.
It does'nt work, could you help me .... In debug mode , i placed a breakpoint in the interrupt routine, but it is never expected.
# include "sys/alt_stdio.h"
# include "system.h"
# include "altera_avalon_pio_regs.h"
# include "altera_avalon_timer_regs.h"
# include "sys/alt_irq.h"
volatile unsigned int contexte_pour_IT; // sauvegarde du contexte de l'IT
static void timer_flash(void* context)
{static unsigned char n=0;
n^=0xFF; // toggle bits
// clear flag IT
//IOWR(TIMER_0_BASE,ALTERA_AVALON_TIMER_STATUS_REG,ALTERA_AVALON_TIMER_STATUS_TO_OFST);
IOWR_ALTERA_AVALON_TIMER_STATUS(TIMER_0_BASE,ALTERA_AVALON_TIMER_STATUS_REG);
IOWR(SORTIES_BASE,0,n);
}
int main()
{
void* Timer_IT_ptr= (void*) &contexte_pour_IT;
IOWR(TIMER_0_BASE,ALTERA_AVALON_TIMER_CONTROL_REG,ALTERA_AVALON_TIMER_CONTROL_ITO_MSK);
IOWR(TIMER_0_BASE,ALTERA_AVALON_TIMER_PERIODL_REG,0x3E8);
IOWR(TIMER_0_BASE,ALTERA_AVALON_TIMER_PERIODH_REG,0);
alt_ic_isr_register(TIMER_0_IRQ_INTERRUPT_CONTROLLER_ID,TIMER_0_IRQ,timer_flash,Timer_IT_ptr,0);
alt_irq_init(TIMER_0_BASE);
while(1);
}
