Network generating a wake interrupt? Sort of?

[ctacke]

Odd bug, but very, very repeatable.

I have a test app (Project Lab WakeOnInterrupt sample). It sleeps on a falling interrupt, wakes on rising on the same pin. Sleep wake works very reliably with this sample (except the SPI not coming back, but that's a separate issue).

I extended the sample to connect to the network and then continually call postman echo. And I get the following behavior:

• power up
• network connects
• postman returns data
• falling interrupt
• device goes to sleep
• rising interrupt
• device wakes
• postman returns data
• falling interrupt
• device goes to sleep
• device "half wakes" best I can describe - the USB connection on the PC sees it, but comes up as "Unknown USB Device - Device Descriptor Request failed"

At this point

• no interrupts do anything - device won't wake or sleep
• device is not enumerating as a serial device, so can't check for output
• 99% sure code is not running as the GPIO toggle for the display backlight is not changing state

[ctacke]

Test App: NetworkWake.zip

[ctacke]

@Peter-Moody have you validated/tested this since all of the sleep work you completed?

[Peter-Moody]

No