topic capture and match functions in LPCXpresso IDE

capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:03 GMT

Content originally posted in LPCWare by dragilla on Wed Nov 16 10:23:07 MST 2011
Hey, does anyone have a good manual, source of knowledge, where I could read about these mechanisms (capture and match)? In particular I want to use them in my project on LPC1769. Thanks.

Re: capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:04 GMT

Content originally posted in LPCWare by fjrg76 on Wed Nov 16 15:49:46 MST 2011

Quote: dragilla
Hey, does anyone have a good manual, source of knowledge, where I could read about these mechanisms (capture and match)? In particular I want to use them in my project on LPC1769. Thanks.

Hello

Could you be more specific about your project? The only manual is the NXP's user manual, and it's not pedagogic at all. Sources of knowledge are the drivers that are included with LPCXpresso LPC17xx examples, but the details are not documented.

Re: capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:04 GMT

Content originally posted in LPCWare by dragilla on Thu Nov 17 02:45:45 MST 2011
I would if I knew how to ask the question. I want to be able to catch a signal and then either replicate it or delay it or kill it.
Angelo (Polux rsv) told me I should use the capture and match funtions for that.
I don't know where to start, don't know what these functions do, how the whole mechanism works, if it's loading the processor, how to control it, etc. :)
If it's a general process, and I think it is, then maybe other sources than lpc would be good to understand the general idea. But so far google didn't give me much.
I guess is somewhat connected to the pwm mechanisms....

Re: capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:05 GMT

Content originally posted in LPCWare by Polux rsv on Thu Nov 17 03:41:01 MST 2011
Without basic knoweledge about these functions, it would be hard to understand the NXP documentation as it contains no drawings to explain the timer internals. On competitors documentations:D, there are drawings which explains very well the principles of such funtions. On another post about TC, I described the principles.
You could also find the lpc17xx.cmsis.driver.library, and look the timer examples.

Angelo

Re: capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:06 GMT

Content originally posted in LPCWare by dragilla on Fri Nov 18 03:32:59 MST 2011
So tell me please which inputs or types of inputs should I use. On which part of hardware will the process take place?

Re: capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:06 GMT

Content originally posted in LPCWare by Polux rsv on Fri Nov 18 06:07:17 MST 2011
Start reading the UM10360.pdf, chapter 21. In other words: RTFM :rolleyes: Sorry, I couldn't resist :D

Angelo

Re: capture and match functions

lpcware — Thu, 16 Jun 2016 01:22:07 GMT

Content originally posted in LPCWare by dragilla on Fri Nov 18 06:16:18 MST 2011
Yeah, finally a concrete answer - I missed that term ;)