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Mention here why ethernet time-out is 31.8 seconds on W5500 #9

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0xCAFEDECAF opened this issue Sep 22, 2017 · 0 comments
Open

Mention here why ethernet time-out is 31.8 seconds on W5500 #9

0xCAFEDECAF opened this issue Sep 22, 2017 · 0 comments

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@0xCAFEDECAF
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SolarMeter/Solarmeter.ino

Line 47 in 8f2cf97

W5100.setRetransmissionCount(8);

Maybe good to put a comment here:

    // On W5500-based hardware, the timeout doubles per retry up to a maximum of 64000 units.
    // So by specifying 8 it will take:
    // 2000 + 4000 + 8000 + 16000 + 32000 + 64000 + 64000 + 64000 + 64000 = 318000 = 31,8 seconds(!)
    // See also: https://forum.arduino.cc/index.php?topic=430605.0
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