i.MX ProcessorsのトピックRe: Testing GPIO in imx93- EVK kit

Testing GPIO in imx93- EVK kit

Robbi — Tue, 25 Feb 2025 12:29:01 GMT

Hi Team,

I has checked list of GPIO's in /sys/class

Is this GPIO's is located on J1001 40-pin header on EVK and how to know gpiochip512 is mapped to which pin number. Please guide me to test GPIO's in EVK kit.

Thanks

Robbi

Re: Testing GPIO in imx93- EVK kit

JorgeCas — Tue, 25 Feb 2025 17:34:30 GMT

Hello,

The gpiochip that manages the J1001 GPIOs is gpiochip0.

The GPIO number matches with the number in schematic:

For example, EXP_GPIO_IO02 in pin 3 of J1001 is controlled as next:

Best regards.

Re: Testing GPIO in imx93- EVK kit

Robbi — Thu, 27 Feb 2025 05:47:13 GMT

Thanks @JorgeCas,
can you tell me what is number 625 626 and 627 is it calculated from formula:((port)*32) +((index)&31)).

Re: Testing GPIO in imx93- EVK kit

JorgeCas — Thu, 27 Feb 2025 15:14:16 GMT

Hello,

Those numbers are the process number assigned for each command used, it is not related to GPIO number.

Best regards.