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Re: ATmega 168 Timer 1 mode 14, fast PWM, problem

Re: ATmega 168 Timer 1 mode 14, fast PWM, problem

2007-04-08 by anding_eunding

The way I read the datasheet, in mode 14, ICP1 is allowed to hold any 
value from 4 - 65535, to give a selectable pulse width. I used a 
value of around 40000....

--- In AVR-Chat@yahoogroups.com, BobGardner@... wrote:
>
> In a message dated 4/8/2007 9:00:43 P.M. Eastern Daylight Time,  
> anding_eunding@... writes:
> 
> Maybe I  could put the question another way:
> 
> Does anyone have experience of  running Timer 1 Mode 14 
successfully 
> on an ATmega 168?  If you do,  could you share the code fragment 
> please?  I may just be doing  something very silly, and starting 
with 
> a working model might show me if  that's the case.
> 
> ===================================================
> If ICP1 is top, you need to put 0xFFFF in it for 16 bit PWM. Did 
you do  
> this? (At first, I thought you had to apply a pulse of the right 
width to make  
> the ICP1 capture 0xFFFF, which could be tricky)
>  
> 
> 
> 
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http://www.aol.com.
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> 
> [Non-text portions of this message have been removed]
>

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

2007-04-09 by BobGardner@aol.com

In a message dated 4/8/2007 9:00:43 P.M. Eastern Daylight Time,  
anding_eunding@yahoo.com writes:

Maybe I  could put the question another way:

Does anyone have experience of  running Timer 1 Mode 14 successfully 
on an ATmega 168?  If you do,  could you share the code fragment 
please?  I may just be doing  something very silly, and starting with 
a working model might show me if  that's the case.

===================================================
If ICP1 is top, you need to put 0xFFFF in it for 16 bit PWM. Did you do  
this? (At first, I thought you had to apply a pulse of the right width to make  
the ICP1 capture 0xFFFF, which could be tricky)
 



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[Non-text portions of this message have been removed]

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