topic Re: Using TCP socket in LwIP on iMXRT1176 in i.MX Processors

Using TCP socket in LwIP on iMXRT1176

Devaharsha — Tue, 30 May 2023 12:42:14 GMT

Hi,

We have used lwip_ping_freertos_cm7 example. The example is working fine i.e. Its pinging the host device.

My understanding is that-

1) lwip_ping_bm example uses Raw APIs (i.e. Non OS uses Raw API)

2) OS mode can use Socket API and Raw API

3) lwip_ping_freertos example uses Socket API

My question is, during the socket creation, it's using SOCK_RAW as socket type and ICMP as socket protocol.

lwip_socket(AF_INET, SOCK_RAW, IP_PROTO_ICMP);

I want to create SOCK_STREAM as socket type that uses TCP protocol. But if I directly modify it, its giving me error.

My requirement is to use ethernet with normal tcp/ip server-client example. But the above code is using sendto() ,recvfrom() APIs that are for UDP transmission. Can you help me, where to modify the code?

Thanks,

Devaharsha

Re: Using TCP socket in LwIP on iMXRT1176

kerryzhou — Wed, 31 May 2023 02:44:11 GMT

Hi @Devaharsha ,

I highly recommend you use the company email to create the question in the future instead of the gmail, then that will have the higher support priority.

I have the RT1060 socket example, both client and server, you can refer it, as the lwip is the same for RT1060 and RT1176.

If you want to get the project, please use your company email to create the new question, then @me(kerry zhou), I will share th code to you in your new question post, thanks.

Best Regards,

Kerry

Re: Using TCP socket in LwIP on iMXRT1176

Devaharsha — Tue, 06 Jun 2023 07:28:39 GMT

Hi,

I have used company email ID. Can you share the code?

Another question, there is ipv4_ipv6_freertos example. I have gone through the readme file, but I didnt get. Can you tell the steps how to test it?

Thanks,

Devaharsha

Re: Using TCP socket in LwIP on iMXRT1176

kerryzhou — Tue, 06 Jun 2023 08:58:48 GMT

Hi @Devaharsha ,

Which case or the community linker you have used your company email?

Please share your case number and community, where did you get the socket code? In my memory, I still didn't receive your company email requirement, thanks.

Best Regards,

Kerry

Re: Using TCP socket in LwIP on iMXRT1176

Radoslaw — Wed, 06 Dec 2023 10:45:25 GMT

Hi, Kerry
Could I also ask for the code for the raw sockets, I use RT1052 as MCU.

Thanks
Radoslaw

Re: Using TCP socket in LwIP on iMXRT1176

porifiro — Tue, 12 Aug 2025 07:18:24 GMT

Hello can you send me the code for the RT1176 socket example
I'm trying to integrate the RT1176 board to a web server via ethernet port