Counters in Uno32

Created Sun, 08 Jul 2012 21:08:13 +0000 by maszkows

maszkows

Sun, 08 Jul 2012 21:08:13 +0000

Hello,

I am new in chipkit and I need you advise. My task is to measure period of signal which is 0-50kHz and i need to measure 4 sources of this signals independently.

I know that PIC32 has 5 timers/counters but so far still don't get possible modes and its usage.

• timer internal,
• timer external - aka counter,
• timer gated)

I was thinking that to make easier for processor pulses could be divided before triggering interrupt but i don't know if it is with in capabilities of PIC32. because i would need to divide each signal individually.

can any user advice/explain and share his experience in this subject and may be some useful example for analysis/understand.

br Dan

mikes

Mon, 09 Jul 2012 01:18:47 +0000

#include <plib.h>
void setup()
{
  Serial.begin(115200);
  Serial.println(ReadCoreTimer(),DEC);
}
void loop()
{
}

I would use CoreTimer (40 counts/microsecond) and interrupts to measure frequency.

dresseslady539

Sat, 14 Jul 2012 02:20:54 +0000

Ditto,I agree with your opinion, thank you!If anyone is there a better idea, saying that out and share,tkx!

led downlights

Jacob Christ

Sat, 14 Jul 2012 22:06:07 +0000

The PONTECH UAV100 (which is mostly based on the Uno32) code has some examples of using change notice interrupts for timing servo pulses. We are timing 8 servo inputs.

https://github.com/pontech/uav100

http://pontech.com/details/138

Jacob

jorgea

Wed, 18 Jul 2012 02:07:05 +0000

Have you devise a better way to a solution to your problem?

RobertParsons

Tue, 27 Aug 2013 11:05:19 +0000

Hello, I am new in chipkit and I need you advise. My task is to measure period of signal which is 0-50kHz and i need to measure 4 sources of this signals independently. I know that PIC32 has 5 timers/counters but so far still don't get possible modes and its usage.

• timer internal,
• timer external - aka counter,
• timer gated) I was thinking that to make easier for processor pulses could be divided before triggering interrupt but i don't know if it is with in capabilities of PIC32. because i would need to divide each signal individually. can any user advice/explain and share his experience in this subject and may be some useful example for analysis/understand. br Dan

hello friend is your project completed? I am working on similar task so can you provide vital information to help me?Please reply thanks in advance:)