I am struggling with interrupt from fpga.
I am using gpio from DE-10 nano board (KEY0), which is routed to f2h_irq1.
On clicking the button KEY0 I receive interrupt from the 1st time, but trying to press it again, does not result in any further interrupt…
I am not sure what wrong I am doing, please help.
These are the steps I’m doing:
- enable F2H bridge :
ret = socfpga_bridge_setup(ALT_BRIDGE_F2H)
2.configure interrupt to edge trigger (ICDICFRn register) + enable interrupt
- enable interrupt (ICDISERn register) in PIO (key0 in de-10 nano):
(*(volatile unsigned int*)(ALT_LWFPGASLVS_OFST + 0x5000 + 0x8)) = 0xff;
- in interrupt handler just increment counter, and then clean interrupt bit (ICCIAR)
I use GHRD in DE-10 nano.
Any idea what’s wrong ? any example available ?