RE: GPIOTE Output Pin High/Low Is Reversed (LED Blinking Test)

GaryDT — Sun, 21 Nov 2021 15:50:47 GMT

I found an explanation here... nRF52840 Development Kit (User Guide) (See quote below from page 30 of the guide)

"The LEDs are active low, meaning that writing a logical zero ('0') to the output pin will illuminate the LED"

Edit... My apologies. I was wrong before, i.e., the High/Low is Not reversed...

Incidentally, I've had a USB PicoScope for about 1 week, and finally have the chance to play around a little more this afternoon. So, after a quick Google search I found that I needed to add "Port << GPIOTE_CONFIG_PORT_Pos" to test other than via LEDs.

So for pin D10 (P1.02), the following is required... PIN_GPIO (2) and Port (1). I now have my PicoScope set to 2 s/div and +2 V, and I can clearly see the High and Low occurring correctly.

Problem solved 😀