topic Re: Generate 4 Pulses with SCT without interrupt in LPC Microcontrollers

Generate 4 Pulses with SCT without interrupt

sodiptaberutu — Fri, 09 Sep 2016 11:47:58 GMT

Hallo all,

I try to generate 4 Pulse with SCT on LPC 1549 (see on the attachment). I use it for burst the ultrasonic sensor. My question is: how can I generate the pulses without an Interrupt Routine. Any ideas?

Thank you

Sodipta Karina

Re: Generate 4 Pulses with SCT without interrupt

jeremyzhou — Tue, 13 Sep 2016 06:11:49 GMT

Hi,

I've attached the application demo about the SCTimer, and please refer to it for details.

www.nxp.com/documents/application_note/AN11538.zip?fasp=1&WT_TYPE=Application%20Notes&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=zip&WT_ASSET=Documentation&fileExt=.zip
Have a great day,
Ping

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Re: Generate 4 Pulses with SCT without interrupt

sodiptaberutu — Tue, 13 Sep 2016 08:34:46 GMT

I have read it and it helps me. I have 1 question namely: For example I use SCT0, then I divide it into SCT0_High and SCT0_Low. Are those Timers (SCT0_H and SCT0_L) be able to start counting at the same time?

Best Regards,

Sodipta

Re: Generate 4 Pulses with SCT without interrupt

jeremyzhou — Sun, 18 Sep 2016 08:07:16 GMT

Hi Sodipta,

Yes, SCT0_H and SCT0_L value can start increase at the same time, about the run the SCT, you can learn the more information in the section Run the SCT in the reference manual.

Hope it helps.
Have a great day,
Ping