LPC Microcontrollers中的主题 Re: How to change CTIMER PWM settings on MCUXpresso? (LPC802)

How to change CTIMER PWM settings on MCUXpresso? (LPC802)

eddsanliik — Thu, 08 Jun 2023 06:09:35 GMT

Hello everyone,

I am using LPC802 processor to generate PWM signal. I set CTIMER0 (PIO0_9) to 3kHz %50 duty PWM and also set 600Hz MRT Interrupt for GPIO toggle. But PWM start with low. How can i change it to start with high? I added my signal picture and my main code.

Thank you.

Eda

Re: How to change CTIMER PWM settings on MCUXpresso? (LPC802)

Alice_Yang — Thu, 08 Jun 2023 09:22:04 GMT

Hello @eddsanliik

All single edge controlled PWM outputs go LOW at the beginning of each PWM cycle.

Alice

Re: How to change CTIMER PWM settings on MCUXpresso? (LPC802)

eddsanliik — Thu, 08 Jun 2023 10:27:31 GMT

is there any solution about starting with high level with LPC802?

Re: How to change CTIMER PWM settings on MCUXpresso? (LPC802)

Alice_Yang — Fri, 09 Jun 2023 07:12:03 GMT

Hello @eddsanliik

Sorry I don't think Ctimer PWM can.

Alice