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Re: [lwip-users] STM32 + lwip(modbus tcp), always timeout
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From: |
Sergio R. Caprile |
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Subject: |
Re: [lwip-users] STM32 + lwip(modbus tcp), always timeout |
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Date: |
Fri, 4 Jan 2019 09:31:24 -0300 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 |
There is no modbusTCP on lwIP. Go to the ones who wrote that and ask
them for help.
1.3.2 is a version perhaps older than the STM32 itself, you should get a
more up to date framework for your endeavours.
Before you do that, try to know at least if TCP is connecting. ModbusTCP
is a simple protocol, a client connects to a server and sends a request;
a timeout means that either the connection or the transaction did not
succeed. You can debug either with the proper tools (wireshark)