topic Re: LCU out PWM in S32K

LCU out PWM

zeyu__1 — Mon, 20 Nov 2023 08:36:31 GMT

I would like to know how to generate the application in this reference document through LCU components or have routines implemented through API functions in SDK. Thank you very much for your help!

Re: LCU out PWM

Senlent — Tue, 21 Nov 2023 03:08:02 GMT

Hi@zeyu__1

attached is a bried routine I wrote when testing LCU and eMIOS module.

The LCU module is used to realize the output of complementary PWM with insert dead time.

If you want to have a deeper understanding of its implementation process, the following information will be very helpful to you.

https://www.nxp.com/design/development-boards/automotive-motor-control-solutions/s32k344-brushless-direct-current-and-permanent-magnet-synchronous-motor-control-development-kit:MCSPTE1AK344

Re: LCU out PWM

zeyu__1 — Tue, 21 Nov 2023 06:35:27 GMT

Hi@Senlent

Thank you very much for sharing, I am trying to replicate your routine,I want to drive the stepper motor driver through a PWM,Can you provide some thoughts on the unintended effects of my one-way PWM using only LCU out

Re: LCU out PWM

Senlent — Tue, 21 Nov 2023 06:44:16 GMT

Hi@zeyu__1

The routine I provide you is already the simplest one.

eMIOS.ch1->TRGMUX->LCU0.0->Pair PWM with Dead time.

Re: LCU out PWM

zeyu__1 — Wed, 22 Nov 2023 03:08:02 GMT

Hi@Senlent

I understand the logic of what you said, based on which I would like to discuss something else with you，

For example, is it possible to write UCDIS registers to enable and disable PWM output at will after initialization via this API function Emios_Pwm_Ip_SetChannelEnable (), and also, after the LCU initializes and sets the output, I mean after the hardware is connected and can output PWM, Is it possible to change the PWM duty cycle and period of eMIOS output through API functions to achieve more operations?

Thank you very much for your answer, and I look forward to your reply this time

Re: LCU out PWM

Senlent — Wed, 22 Nov 2023 05:33:08 GMT

Hi@zeyu__1

yes, you can test the demo project that i have sent you.