topic Re: SCT PWM start level High/low setting. in LPC Microcontrollers

SCT PWM start level High/low setting.

skanda19 — Fri, 27 Oct 2023 18:27:05 GMT

Hello,

I wrote some code that lets me create a Sine PWM signal through the SCT block and DMA.

Now that this is working, I need to be able to generate a complementary Sine PWM, I would it be possible to generate another signal with the opposite starting level than the original signal ?????

which register would be involved ???

Thanks

Re: SCT PWM start level High/low setting.

Alice_Yang — Tue, 31 Oct 2023 09:37:16 GMT

Hello @skanda19

You can refer to AN11538, or use MCUXpresso config tool:

Alice

Re: SCT PWM start level High/low setting.

skanda19 — Tue, 31 Oct 2023 15:09:09 GMT

thanks Alice I will check it out.

Re: SCT PWM start level High/low setting.

skanda19 — Wed, 01 Nov 2023 16:41:59 GMT

For anyone else who might need to do this on their own project.

Registers:

/*signal A*/

LPC_SCT->OUT[x].SET = event_a;

LPC_SCT->OUT[x].CLR = event_b;

if you need to create a complementary signal A

LPC_SCT->OUT[x].SET = event_b;

LPC_SCT->OUT[x].CLR = event_a;

regards.