Re: [lwip-users] Modbus TCP client and HTTP server at the same time

[Dan Sexton]

I use an STM32F407 and LWIP and support a Modbus TCP client and Web Server 
simultaneously as well as an MQTT server. I suspect you have a configuration 
issue. Check to see the number of Sockets LWIP is configured to support. In my 
configuration I am very resource constrained and had to construct my web pages 
to not make a lot of simultaneous requests.

Sent from my iPhone

> On Dec 21, 2019, at 5:07 AM, MrFord <address@hidden> wrote:
> 
> Hi everyone. I have stm32f767zi and the lwip / socket library. I have a task.
> The first is to read data from the device via modbus TCP. The second is data
> output to a web browser. That is, the tcp client and the tcp server must be
> running on the device at the same time. The problem is that when they work
> in parallel, only the tcp server works, and the client just does not work.
> Also tried to rewrite the code on the lwip / raw and lwip / netconn library.
> Has anyone encountered this problem and how to solve it? Thanks in advance!
> 
> 
> 
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