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Frequency output from timer XMEGA

 
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Davide

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Joined: 25 Sep 2005
Posts: 77

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PostPosted: Fri Oct 16, 2020 2:17 pm    Post subject: Frequency output from timer XMEGA Reply with quote

Hello All,

I did find any message on this topic, is it possible to have 1/4 internal clock to pin PE3. I use Xmega32.

Thanks

Davide

(BASCOM-AVR version : 2078 , Latest : 2.0.8.3 )
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MWS

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Joined: 22 Aug 2009
Posts: 1827

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PostPosted: Fri Oct 16, 2020 3:47 pm    Post subject: Re: Frequency output from timer XMEGA Reply with quote

Davide wrote:
is it possible to have 1/4 internal clock to pin PE3. I use Xmega32.
You need to read the data sheet.

XMega32AU:
Quote:
CLKOUT = Peripheral Clock Output
CLKOUT can optionally be moved between port C, D and E and between pin 4 and 7.
PortE.3? No.

Quote:
Port E - alternate functions.
...
PE3 OC0D

With suitable settings, TCE0 will output a sysclock/4 signal on PE3.
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Davide

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Joined: 25 Sep 2005
Posts: 77

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PostPosted: Fri Oct 16, 2020 4:16 pm    Post subject: Reply with quote

Hello MWS,

I select PE3 because I red the datasheet Wink)

I am sure about the meaning of OC0D - The timer should be TCE0 according the datasheet but how to activate the output.

Is the sintax correct:

Config TCE0 = Freq , Prescale = 4

Do we have to enable the timer?

How we adress the PE3 output ?


Davide
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MWS

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Joined: 22 Aug 2009
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PostPosted: Fri Oct 16, 2020 6:46 pm    Post subject: Reply with quote

See XMEGA_easy_Frequency_Generation.bas from Samples\XMEGA\Counter Timer.
Have no way to test, but this should do:
Code:
Config PortE.3 = Output
Config TCE0 = Freq , Prescale = 2 , CompareD = Enabled , Resolution = 16
TCE0_CCD = 0
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Davide

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Joined: 25 Sep 2005
Posts: 77

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PostPosted: Sat Oct 17, 2020 3:06 pm    Post subject: Reply with quote

Hello MWS,

I tried and it works fine.
Very Happy

Many thanks

D.
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