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Wiznet chip delays 200msecs before sending the final ACK to the HOST [imported] #433

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cmaglie opened this issue Nov 15, 2012 · 0 comments
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Wiznet chip delays 200msecs before sending the final ACK to the HOST [imported] #433

cmaglie opened this issue Nov 15, 2012 · 0 comments
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Type: Wontfix Arduino has decided that it will not resolve the reported issue or implement the requested feature

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cmaglie commented Nov 15, 2012

This is Issue 433 moved from a Google Code project.
Added by 2010-12-22T20:09:18.000Z by [email protected].
Please review that bug for more context and additional comments, but update this bug.
Closed (WontFix).

Original labels: Type-Defect, Priority-Medium, Component-Core

Original description

Using a packet sniffer you can see the Arduino/Wiznet sending data to the host in a timely manner, until the final ACK. Between the HOST's ACK of the Wiznets last packet, and the Wiznets ACK of the HOST's ACK is over 200msecs.

In the Wiznet datasheet: http://www.wiznet.co.kr/UpLoad_Files/ReferenceFiles/W5100_Datasheet_v1.2.2.pdf

See page 26, bit 5 of the Sn_MR register.

Enclosed are two patches, one to Client.cpp and one to Server.cpp.
They both set the No Delay bit to allow for immediate ACK's.
@cmaglie cmaglie closed this as completed Nov 15, 2012
tbowmo pushed a commit to tbowmo/Arduino that referenced this issue Jul 14, 2016
@tekka007
Merge pull request arduino#433 from mysensors/fix-prerocessor-mishap
f79abe9 
Fix typo in nested prepropressor statments
@per1234 per1234 added the Type: Wontfix Arduino has decided that it will not resolve the reported issue or implement the requested feature label Jul 1, 2017
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