GPIO input pin leaking current

RE: GPIO input pin leaking current

Vidar Berg — Fri, 03 May 2024 12:37:45 GMT

It's strange that using GPIOTE in events mode seems to be causing the average current to increase to 200 µA. I don’t recall seeing this before. Have you tried the Zephyr button sample to see if it has the same problem?

RE: GPIO input pin leaking current

Shahin97 — Fri, 03 May 2024 12:11:22 GMT

Same hardware -

With GPIO interrupt enabled without "sense-edge-mask" my average is 200uA. with it is 17-19uA. Confirmed on multiple boards.

RE: GPIO input pin leaking current

Vidar Berg — Fri, 03 May 2024 12:09:10 GMT

Sorry, I'm a bit confused. Which configuration are you using when you get an average current of ~200 uA?

RE: GPIO input pin leaking current

Shahin97 — Fri, 03 May 2024 12:06:40 GMT

Full system is at 17-19uA total, with 2 GPIO interrupts with edge detection, BLE MESH LPN, and NFC enabled.

RE: GPIO input pin leaking current

Vidar Berg — Fri, 03 May 2024 12:04:06 GMT

That makes sense. With the 'sense-edge-mask', the input will also use PORT events for edge detection. What is the idle current with this configuration?

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.6.1/zephyr/build/dts/api/bindings/gpio/nordic,nrf-gpio.html

RE: GPIO input pin leaking current

Shahin97 — Fri, 03 May 2024 11:59:16 GMT

Vidar Berg to add to the mystery

My idle current is exactly the same with edge triggering with the entry of "sense-edge-mask", so now have no additional current draw compared to having it un-initialized.

RE: GPIO input pin leaking current

Vidar Berg — Fri, 03 May 2024 11:28:54 GMT

Edge triggering will increase the idle current with ~17 uA compared to level triggering (GPIOTE IN event vs PORT event), but not 200 uA. Have you tried reading out the PIN_CNF[6] register to verify that the pin configuration is as expected?

RE: GPIO input pin leaking current

Shahin97 — Fri, 03 May 2024 11:23:27 GMT

Update

retVal = gpio_pin_interrupt_configure_dt(&dt_btn,GPIO_INT_EDGE_BOTH);

Current consumption is increased here

RE: GPIO input pin leaking current

Shahin97 — Fri, 03 May 2024 11:11:13 GMT

Same issue on multiple boards. I have set the GPIO to be a test point and same current consumption so it is not a hardware issue on that GPIO

RE: GPIO input pin leaking current

Shahin97 — Fri, 03 May 2024 10:01:24 GMT

Vidar Berg Unconfigured the Current consumption is low and configured the increased current consumption is about 180-200uA

I have acquired more units to test, I will give them ago

RE: GPIO input pin leaking current

Vidar Berg — Thu, 02 May 2024 11:22:21 GMT

Hello,

I don't see anything wrong with your configuration, which makes me suspect the leakage may be in your circuit. What is the leakage current you measured, and do you observe the same if you don't configure the button input but leave it in its reset state (input, disconnected)?

Best regards,

Vidar