Emulating PWM using Flexio in imx93 A55 core

[IRENE_U]

Hi, NXP TechSupport

How to simulate PWM signals using the FlexIO port on i.MX93 with linux system?

The datasheet mentions that FlexIO has this function, but I couldn't find any relevant code on the NXP forum.

IRENE_U_0-1763517817753.png

I only found code for simulating PWM signals using TPM or using the M33 processor but we are using GPIO_IO28 pin.

Thanks

[Zhiming_Liu]

Hi @IRENE_U 

There is no available driver in linux to emulate PWM with Flexio, you can refer below links.

https://www.nxp.com/docs/en/application-note/AN12713.pdf

https://www.nxp.com/docs/en/application-note/AN5209.pdf

https://github.com/zephyrproject-rtos/zephyr/blob/main/drivers/pwm/pwm_nxp_flexio.c

https://github.com/nxp-mcuxpresso/mcux-sdk-examples/tree/MCUX_2.16.100/mcimx93evk/driver_examples/fl...

Best Regards,
Zhiming