i.MX ProcessorsのトピックRe: Polling an Inputs state

Polling an Inputs state

Ralf_Rademacher — Mon, 12 Jun 2023 19:34:02 GMT

I want to write a character device driver and poll an gpio input state inside this driver (sai1_rxd0).

Is there somebody who can please provide an example codesnippet how i can poll an input at i.MX8MP inside a driver?

I don't want to use interrupts...

Best

Ralf

Re: Polling an Inputs state

Ralf_Rademacher — Tue, 13 Jun 2023 05:51:30 GMT

I think gpio_get_value() will do the job

Re: Polling an Inputs state

Bio_TICFSL — Tue, 13 Jun 2023 14:38:32 GMT

Hello,

Don't have a code snoppet but if you are modify a driver the gpi_get_value() will do the job, but you have to compile everything again to make it works.

Regards