Ping from W5500

Question

Anyone know of a library or command that I could use to get my W5500 to ping another IP on the network?

jdcowpland · Answer

Hi, I’m not having any issues connecting my chip to the network. It’s on the network fine and I’ve got Static and DHCP both working. What I want to do is send data to a server on my network, but sometimes the server will be turned off, so I want my module to ping the server at regular intervals so I know when it’s online…

jdcowpland · Answer

Ok great thanks! Also, is there anyway the chip can detect the network speed. It can obviously support 10 and 100 mbps speeds, but I would like it to be able to detect the speed automatically when connected and apply whatever speed is supported.

jdcowpland · Answer

Just tried implementing the ping code from the coocox code. Also been looking at the documentation for it. It mentions setting up the socket protocol as ICMP, which makes sense, and it talks about a Sn_PROTO register, which from the CooCox code, should be at position 0x0014. But the datasheet marks that register as reserved. I’ve tried sending the packets, and wireshark marks them as Protocol 0: IPv6 hop-by-hop option. Everything else in the packet seems legit. Is there a firmware upgrade for the chip or something that enables the PROTO register for raw ip?

jdcowpland · Answer

Sorry not sure I understand. Are you saying the register is write protected?

jdcowpland · Answer

Hi, Thanks got it working now. On another note, the w5500 has the ability to communicate at 10Mbps or 100Mbps. Do you know of any simple way for the w5500 to automatically detect the network speed and set it to the right one?

jdcowpland · Answer

Hi yes, I’m aware that I can configure it manually, but what I want to do is write some code which automatically detects the network speed and then configures the phy. Is that possible?

nver · Answer

Hi Wiznet If IPRAW mode is supported on W5500 why its not documented in the datasheet ? I just checked W5500 datasheet v1.0.4 13 June 2014 and its still not there. Is there any reason for not publishing it?

avivf · Answer

Hello. I read the answer, but couldn’t understand how to set the protocol. I see that the func/macro of Sn_PROTO() does not exist any more. So, what is the solution for that issue in W5500? Thanks, Aviv

Coccoliso · Answer

From W5500.h header file… #define _W5500_IO_BASE_ 0x00000000 #define WIZCHIP_SREG_BLOCK(N) (1+4*N) //< Socket N register block #define Sn_PROTO(N) (_W5500_IO_BASE_ + (0x0014 << 8) + (WIZCHIP_SREG_BLOCK(N) << 3))

warwick · Answer

When is the complete W5500 manual coming… All the examples of using ICMP revert to un documented registers, which are not listed… The W5200 had a proto register at 0x0018 but that seams to be missing… and the New library’s for the W5500 have all the socket macros removed…

kejuqeju · Answer

Hello WIZnet Team! i am using socket 2 of W5500 i tried to change the S2_PROTO register (0x0014) to ICMP protocol (0x01) and read it back, and success (the value changed to 0x01). and then i opened the socket using OPEN command (0x01) to S2_CR (0x0001) and read the status from S2_SR (0x0003), the result always 0x00 (SOCK_CLOSED), but you say it must be SOCK_IPRAW (0x32). i dont know what is wrong here. or should i set the S2_MR too? but there is no ICMP protocol option there. can you help me?

kejuqeju · Answer

problem solved. to OPEN socket 2 in IPRAW mode, first i must set the S2_MR protocol (P3:P2:P1:P0) to 0011 (0x03) which is IPRAW mode (you did not write it in your datasheet, i wonder why?) and then sent OPEN command to S2_CR. after the S2_SR status changed to 0x32 (SOCK_IPRAW), i have successfully sent PING message and got reply.