Board : DE-10 ( Cyclone V SoC )OS : FreeRTOS Hi, I'm writing a driver for FreeRTOS+TCP stack. I configured the EMAC1 and DMA peripherals. At this moment, everything works fine, except that I don't get any interrupt from EMAC1. So for the moment I poll the EMAC and DMA status bits. I see them come high, and I can clear them by writing 1's. What I did is : ● Program the GIC to enable interrupt 152 ( ALT_INT_INTERRUPT_EMAC1_IRQ ) ● Set the handler + data ● Set a priority and trigger level ● program the peripheral ( EMAC interrupt mask reg 15, and EMAC/DMA interrupt enable DMA register 7 ) As a test, I tried to get interrupt from UART-0. The device works fine, but I don't see interrupts neither. The only interrupt that does work is interrupt 29 ( ALT_INT_INTERRUPT_PPI_TIMER_PRIVATE ). That timer is used to get a FreeRTOS system clock. I asked the same question on the FreeRTOS forum, but without success. See https://sourceforge.net/p/freertos/discussion/382005/thread/a80a5ff7/?limit=250#d738 Thanks.
The problem is solved.I had to call: alt_int_dist_target_set( ALT_INT_INTERRUPT_EMAC1_IRQ, (alt_int_cpu_target_t) 0x01); in order to direct the EMAC1 interrupts to the first core. That call will set "Interrupt Processor Targets Registers", which start at 0x800 of the GIC. Regards.