i.MX ProcessorsのトピックRe: PWM API / PWM Library for IMX Linux

PWM API / PWM Library for IMX Linux

rvalvekar — Tue, 12 Feb 2019 12:30:26 GMT

Hello Community,

I am searching for libraries which can be used for PWM Operations especially with the stepper motors. I would like to interface with IMX Processors.

I have searched on this community and on third party vendors, but i could not find any libraries which are focused on PWM.

Do I need any kind of Hardware with the stepper motor for implementing motors ? For example motor control chipset ?

I would like some support from Community on this topic.

Thanks for Support and Help.

Re: PWM API / PWM Library for IMX Linux

CarlosCasillas — Tue, 12 Feb 2019 19:18:49 GMT

Hi Rohan,

Linux BSP for i.MX processors include a basic PWM library (mainly oriented for LCD backlight control). Therefore, it is not intended to work with more real-time implementations like motor control and may not fit your timing requirements. Please refer to chapter 2.7 “Pulse-Width Modulator (PWM)” section of “i.MX Reference Manual” document (attached) for additional details.

In case of using a heterogeneous i.MX processor like the i.MX6SX, i.MX7 or i.MX8, you could use the included M4 core to control real-time applications, like motor control.

Hope this will be useful for you.
Best regards!
/Carlos
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Re: PWM API / PWM Library for IMX Linux

rvalvekar — Tue, 26 Feb 2019 08:39:46 GMT

Hello Carlos,

Thank you for the information.