PWM with processor expert KL43z?

[christopherira]

Hi,

I'm using frdm-kl43z and processor expert. I'm trying to set up a simple pwm output for pin E24. I'm using component fsl_tpm.

I've configured the component as follows:

Not sure how to set the duty cycle, but I initialized the frequency as 250 kHz:

And just trying to initialize the output, I wrote this code:

Is this correct?

Thanks!

[Alice_Yang · Accepted solution]

Hello Christopher,

- About the duty cycle , you  can configure it at here:

- About the initialize code , after you generated the code , you  can find the initialize code at here :

you needn't write the initialize code by yourself .

Hope it helps

Have a great day,
Alice Yang

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[christopherira]

That's very helpful thank you. Additionally, how would I tell the processor to send the output or not send the output? Do I do that through a normal fsl_gpio?

Thanks!

Chris

[Alice_Yang]

Hello Chris,

You don't need add fsl_gpio component.

In the fsl_tpm  component , we can configure the channel to out put PWM:

If you select "Auto initialization " , after generate code , then run the project , it can out put PWM.

And if do not select this option , you can initialize and start it by yourself use the methods , and use the method

of "TPM_DRV_Deinit"  shouts down it .

I recommend you first  select the "Auto initialization " , then run the project , check whether can out put the signal you need .

Hope it helps

Alice