esp_tinyusb: Adding bvalid_signal test #10
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tore-espressif
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@roma-jam Thank for the test! Could you please add another test that would the same as bvalid_signal but with ongoing transfers?
Also please consider renaming to sudden disconnection... :)
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esp_tinyusb v1.4.4
NOT A RELEASE
Change description
bvalid_signalverification.Details
USB Device events, such as attach (plug) and detach (unplug) are detected via
bvalid_signal, which can be connected to any (*mostly) external PIN. (In the most common cases, this external PIN connected to VBUS USB via resistor divider to detect the VBUS power presence. For reference, check Self-Powered Device)When USB Device (self-powered) is attached to the USB Host, the VBUS becomes High.
When USB Device (self-powered) is detached from the USB Host, the VBUS becomes Low.
Both of attach and detach, trigger the dcd_dwc2 layer interrupt with
DCD_EVENT_UNPLUGGEDevent.Current test implement the USB Device without any interface and connect the
bvalid_signalto the High or Low signal source to emulate the VBUS presence/absence.For smoke testing, 10 iterates is enough to see that logic is working.
For load testing, please, change the parameter
DEVICE_DETACH_TEST_ROUNDSintest_bvalid_sig.c.Important notice
Without changes in espressif/tinyusb#19 the test doesn't work.