/** @Function Description: This function registers an interrupt handler.
* If the function is succesful, then the requested interrupt will be enabled
* upon return. Registering a NULL handler will disable the interrupt.
*
* @API Type: External
* @param ic_id Interrupt controller ID
* @param irq IRQ ID number
* @param isr Pointer to interrupt service routine
* @param isr_context Opaque pointer passed to ISR
* @param flags
* @return 0 if successful, else error (-1)
*/
int alt_iic_isr_register(alt_u32 ic_id, alt_u32 irq, alt_isr_func isr,
void *isr_context, void *flags)
{
int rc = -EINVAL;
int id = irq; /* IRQ interpreted as the interrupt ID. */
alt_irq_context status;
if (id < ALT_NIRQ)
{
/*
* interrupts are disabled while the handler tables are updated to ensure
* that an interrupt doesn't occur while the tables are in an inconsistant
* state.
*/
status = alt_irq_disable_all();
alt_irq[id].handler = isr;
alt_irq[id].context = isr_context;
rc = (isr) ? alt_ic_irq_enable(ic_id, id) : alt_ic_irq_disable(ic_id, id);
alt_irq_enable_all(status);
}
return rc;
}
void InitUart()
{
void* context_uart0_ptr = (void*) &context_uart0;
InitUart1(UART_0_NEW_BAUD);
alt_ic_isr_register(UART_0_IRQ_INTERRUPT_CONTROLLER_ID, UART_0_IRQ, IsrUart1, context_uart0_ptr, 0x0); // install UART1 ISR
alt_ic_irq_enable (UART_0_IRQ_INTERRUPT_CONTROLLER_ID, UART_0_IRQ);
}
int main()
{
initTimer(1); //1Hz
//registra la interrupcion y ata a la funcion timer_isr
alt_ic_isr_register(TIMER_ECE10243UPB2016_0_IRQ_INTERRUPT_CONTROLLER_ID,TIMER_ECE10243UPB2016_0_IRQ,timer_isr,(void*)NULL, 0);
alt_ic_irq_enable (TIMER_ECE10243UPB2016_0_IRQ_INTERRUPT_CONTROLLER_ID,TIMER_ECE10243UPB2016_0_IRQ);
while(1){
}
return 0;
}
// Init interrupt
void n2h_isr_init(N2H_isr_fifo* n2h_isr_fifo)
{
// Register N2H2 ISR
if(alt_ic_isr_register(N2H2_CHAN_IRQ_INTERRUPT_CONTROLLER_ID,
N2H2_CHAN_IRQ, n2h2_isr, (void*)n2h_isr_fifo, 0)
!= 0)
{
printf("CPU0: registering n2h2_isr failed!\n");
}
// Enable interrupt on CPU side
if(alt_ic_irq_enable(N2H2_CHAN_IRQ_INTERRUPT_CONTROLLER_ID,
N2H2_CHAN_IRQ) != 0)
{
printf("CPU0: enabling n2h2 interrupt failed!\n");
}
// Enable interrupts on N2H2 side
IOWR(N2H2_CHAN_BASE, 4, (2 | (IORD(N2H2_CHAN_BASE,4))));
}