PORTS Forum
Ports and Interfaces => USB => Topic started by: Pat Crowe on February 15, 2012, 09:53:44 am
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I have two devices claiming LPM support, but neither appears to acknowledge an apparently valid LPM transaction. Does anyone have a capture of a working LPM transaction?
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Incidentally I noticed a previous LPM question post here which asked what value of Endpoint should be specified. I had the same puzzle recently. Jan suggested, as I also recently concluded, that as it was the device being put to sleep, then endpoint 0 was appropriate. Today I noticed that the errata to the LPM ECN actually now specifies:
"The value of the endpoint field shall be 0."
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Interesting update on that.
Unfortunately I don't have an LPM capture.
Jan