GPIO accessibility during OTA DFU

RE: GPIO accessibility during OTA DFU

Menon — Mon, 23 Jan 2023 15:50:23 GMT

Hello,

When you check the reset behavior of 5340(see the below image), the GPIO reset won't happen in wake up from system OFF.

So there is an option.... instead of doing softreset, you can prepare a GPIO pin so that it wakes up immediately from a System OFF.

See product specification page No:67-69.

Kind Regards,

Abhijith

RE: GPIO accessibility during OTA DFU

Adarsh_1 — Fri, 20 Jan 2023 11:09:50 GMT

Hai Menon,

Thanks for your swift response. If that is the case, can you suggest some solution may be on the hardware side to workaround this behavior?

Pulling the GPIO high with an external pull up resistor does not help in this case. Is there any other posible way to make this work?

Best regards,

Adarsh

RE: GPIO accessibility during OTA DFU

Menon — Thu, 19 Jan 2023 14:33:13 GMT

Hello,

AFAIK, an OTA DFU will create a softreset. Because while doing the DFU the application need to be reset So that the MCUboot can swap the image, thus making the GPIOs reset. So I guess GPIOs won't stay high while doing an OTA DFU.

Kind Regards,

Abhijith