Syncing Timer1 and Timer2

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hey guys, I'm using all three timers on the arduino and I've successfully synced timer0 and timer1. I basically 'eyeballed' the syncing by dimming two l.e.d. lights and checking to make sure they were dimming at the same rate. like i said, timer0 and timer1 are synced. Now I'm trying to sync timer2 to the other two timers and i'm not getting the results i want. I know that timer2 uses milliseconds as opposed to microseconds, like the first 2. I've tried dividing by a 1000 to convert millis to micros but its not working. Does anyone know how to get timer 2 counting in microseconds instead of milliseconds?

thanks yall

2

There are too many details missing from your description to provide any guidance. Post your Sketch.

3

Hey man thanks for reading my post. I'm using the 'MsTimer2' class. It uses milliseconds to count. I, however, need it to count in microseconds. Is there a way to get this class to count in microseconds? Do you know of another class for timer2 that counts in microseconds. Like i said earlier I'm already using the other two timers so they are not an option. Timer 2 is my only hope.

thanks

4

Is there a way to get this class to count in microseconds?

I suspect there is. Give it a try. If you get stuck, I suspect someone here will be able to help.

Do you know of another class for timer2 that counts in microseconds?

Sorry, no.

5

None of the timers really count in microseconds or milliseconds. All the timers count in time with the system clock with a divisor.
Another key difference is Timer0 and Timer2 are 8-bit counters. They roll-over at 255. Timer1 is a 16-bit Timer... it rolls-over at 65535.

Inherent to your question is seemingly a misunderstanding of Timers on the Arduino. Can I encourage you to post your problem in a little more detail? There is probably another approach to arrive at a solution.

6

Mitch, thanks so much. You're right I don't have a solid understanding of timers on microcontrollers in general. Know of any good tutorials that would help me understand? I'll post my code tonight after my day job.

7

Tutorials?... no. But the atmega datasheets are excellent reference.
But I suspect you might not need to go that deep once we understand your application. We'll see once you get back to work at your evening job :wink: