I2C Timeout

[gwh]

I don't know if it is a strange place or not - but it is where Microchip does its clock stretching in hardware. Attached are two pages (in zipped pdf) from the Microchip data sheet showing the I2C waveform with clock stretching.

I2C Clock Stretch Microchip.zip

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[xol]

Hi,
So have my last firmware worked?

[gwh]

Just checked it out. Your latest fix seems to take care of a short clock stretch (22mS), but not a long clock stretch (1000mS). The SUB-20 GUI seems to return the error message very quickly.

[xol]

Hi.
I have increased it to something about 2sec
Please try it.

[gwh]

I tried your latest and found that it also does not work for me. When I checked the most recent waveform, the clock stretch was over 2 seconds (due to changes in the hardware that had to be compensated for in I2C firmware).
So if you could provide a version that provides for 5 seconds of clock stretch (as originally mentioned), that should take care of my needs.

[xol]

Well you are tough guy.
I will prepare and post soon over 5sec delay version.

[xol]

Here it is.
Please let me know how it worked this time.

[gwh]

This seems to work now in my application. - Thanks.