Using other timers for PWM in atmega128

system · November 20, 2009, 6:43am

anonymous wrote on Friday, November 20, 2009:

Hello,

I have an atmega128 with freeRTOS and tried to create PWM signal on 2 channels. First I tried to use CLOCK/TIMER3, but there were some “delays” on it while task switching, the same is for timer 0 nad 2.

I set modulation values in the task and thats all. Shouldnt it work independent? Do some interrupts form timer 1 created by FreeRTOS can afect it?

Thank you in advance for your help.

system · November 20, 2009, 9:38am

davedoors wrote on Friday, November 20, 2009:

If the PWM peripheral is free running then you should not see any delays. If it relies on regular fast interrupts then you will have to have some form of interrupt nesting for it to work reliably.