RE: Clear GPIO SENSE signal on HITOLO

Jørn — Wed, 04 Oct 2017 11:08:52 GMT

Hello AmiguelS

GPIOTE port events are always triggered on a rising edge of the DETECT signal. When triggering a HITOLO event, the pin is configured to produce a high DETECT signal when the voltage of the pin is low. So as the voltage of the pin drops, the DETECT signal goes high, and will remain high as long as the voltage of the pin is low. So in this case a low voltage keeps the pin "active" as it will keep the DETECT signal high.

Different pins can have different sense configurations, so whether a pin is active or inactive for high or low voltage depends on its configuration. While the DETECT signal remains high you cannot trigger new port events.

For more information on the sense configuration and the DETECT signal please see the Pin configuration subsection in the GPIO section of the product specification. Also see the port event subsection of the GPIOTE section.

Best regards

Jørn Frøysa