Figure 17. Port selection
5.2 Info page
The main metrics of the running STWBC2 can be observed on this page.
5.2.1 Status semaphore
The status semaphore indicates the current status of the Tx device.
Figure 18. Status semaphore
• STOP: the device is in a state that prevents it from performing an analog ping (e.g., FOD was detected and
the device is waiting for its removal). Refer to the events box for STOP state reason.
• WAIT: analog ping; the device does not detect the presence of an object on the power interface, or there
was no response to digital ping (Timeout).
• PING: the device is performing a digital ping and waiting for an Rx response.
• BPP: power transfer is in progress; the Qi Basic power profile (up to 5 W) has been negotiated.
• EPP: power transfer is progress; the Qi Extended power profile (up to 15 W) has been negotiated.
• STSC: the ST Super Charge protocol has been activated. Based on the Rx request, the input voltage can
be increased to up to 20 V if operating from USB PD.
UM3286
Graphical user interface (GUI)
UM3286 - Rev 1
page 28/84
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