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HI team!

I have to add some function in my old program to my Grasmower buld in FC8 which work. If I add an Interrupt IOT or timer interrupt all the PWM and delay´s are not correct any more.

In the att. program I try to add the timer and the IOT (pin) interrupt only to show what I do. Of course I know I can´t use both.

Help please.

Br Jorgen

Hi Jorgen,
If you select the properties of the PWM component's you will see that they use Timer0 only(Channel0) or timer1 if using channel2.
Note you have not got a timer selected for the PWM on the far right.

Why don't you use one of the other timers available for your interrupt?
E.g 1,2,3 Etc?

Hi Martin!

Ok Martin, why had I not thought of that. I did not think at all about the PWM use timers and I will of course try some of the other timers.

Thanks again

And concerning the MCP9600 I still wait for the component, look forward to test it.

Nice weekend.

Br jorgen.

Hi, Jorgen.
Hopefully, my suggestion works for you.
A for MCP9600, it will only be available for FC9 and onwards.
I will be interested to know if it works ok for you.
Thanks, you have a good weekend too.

Hi Martin!

As you see in my program I have 3 PWM, is it ok use same timer ect timer 0 for these and if I use timer interrupt then use other timers for this or do you recomend 3 different for the PWM?

Thank´s in advance.

Br Jorgen

Hi Jorgen.
You can use the same timer for both the interrupt and two PWM channels.
However, where you are going wrong is when using the same timer for PWM and interrupt, the Prescaler must match timer interrupt and PWM's
E.g Timer0 prescaler = 256, then channel1 & Channel2 PWM prescaler must be 256.
If the timer interrupt has to be a different frequency to PWM, then choose a different timer interrupt.

Hi Martin!

Thank you very much for your explanation, I will follow this

By the way, your MCP 6900 component working very well in FC9

Thank´s Jorgen

Your'e welcome.
Hope it all helps?