topic PWM with processor expert KL43z? in Kinetis Software Development Kit

PWM with processor expert KL43z?

christopherira — Sun, 24 Jan 2016 21:19:42 GMT

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!

Re: PWM with processor expert KL43z?

Alice_Yang — Mon, 25 Jan 2016 03:54:58 GMT

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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Re: PWM with processor expert KL43z?

christopherira — Tue, 26 Jan 2016 19:32:28 GMT

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

Re: PWM with processor expert KL43z?

Alice_Yang — Wed, 27 Jan 2016 04:44:26 GMT

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