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Usage of external crystal for Capture

 
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lokken



Joined: 21 Feb 2010
Posts: 17

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Usage of external crystal for Capture
PostPosted: Sun Feb 21, 2010 7:13 am     Reply with quote
My compiler version is 4.068. And my pic is 18f452. I want to use external crystal to RC0-RC1 (32.768kHz). But I couldn't understand the usage of these codes shown below. Could you explain what is the difference between these codes? What do you prefer for usage of external crystal?
Code:

setup_timer_1(T1_EXTERNAL | T1_DIV_BY_2);


Code:

setup_timer_1(T1_EXTERNAL | T1_DIV_BY_2 | T1_CLK_OUT);
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sun Feb 21, 2010 1:16 pm     Reply with quote
I don't think you can use a Timer1 crystal to do a CCP capture.
Read this post:
http://www.ccsinfo.com/forum/viewtopic.php?t=33653&start=3
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