INTn pin always high

Question

Hello, I’m trying to get falling edge interrupt for per UDP receive message. Here my init codes but it didn’t work, INTn pin always high. reg_wizchip_spi_cbfunc(readByte, writeByte); reg_wizchip_cs_cbfunc(csSelect, csDeselect); wizchip_init(w5500.spiBuffer, w5500.spiBuffer); wizchip_setnetinfo(&w5500); setINTLEVEL(100); setSIMR(0x01); setSn_IMR(w5500.socketNumber, 0x04); w5500.result = socket(w5500.socketNumber, Sn_MR_UDP, w5500.localPort, 0); //

becky · Answer

According to the code above, it is normal for an interrupt to occur. First I want you to check if udp data receive is done. Also, I wonder how the interrupt row is checked.

becky · Answer

murseloguzandic: if (getSn_IR(w5500.socketNumber) == 0x04) Are you on this condition? I can’t see the code to clear the interrupt, are you clearing it?

murseloguzandic · Answer

Yes code enter if (getSn_IR(w5500.socketNumber) == 0x04). I can’t see any change on INTn pin. As I understand pin stays low until I clear interrupt. If pin fall, I will add clear interrupt.

becky · Answer

What is the w5500.socketNumber ? In your code it should be zero.

murseloguzandic · Answer

Yes, it’s zero. I’m taking messages on UDP no problem there.