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Re: [AVR-Chat] ATmega 168 Timer 1 mode 14, fast PWM, problem

2007-04-08 by BobGardner@aol.com

In a message dated 4/8/2007 1:24:58 A.M. Eastern Daylight Time,  
anding_eunding@yahoo.com writes:

am  totally perplexed!  I'm trying to set up fast PWM on 16-bit 
Timer 1  of the ATMega 168 in mode 14 (i.e. fast PWM, TOP = ICR1).

It "doesn't  work", and three strange things are happening which I've 
investigated  thoroughly on in the AVR Studio debugger:

- I cannot write 16 bit  values to OCR1A or OCR1B, they get masked off 
as 9 or 10 bit values insted  during the write.

- I cannot write Clock Select = 2, when I try to, the  clock source 
remains zero

- If I write a Clock Select = 1, I get  dual slope PWM, not single 
slope fast PWM as expected for mode  14.




=========================================
Tried running it on the AVR yet? Maybe the simulator doesn't do mode 14  
right?



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