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about int_timer1 on 16F876

 
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nfs



Joined: 28 Apr 2004
Posts: 18

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about int_timer1 on 16F876
PostPosted: Fri Apr 30, 2004 8:59 am     Reply with quote
is the timer interrupt on every overflow or when he's finished timing?
i have to sample with this expression:

for (i=1, i<=800, i++)
setup_timer_1(T1_internal|T1_div_by_4); //overflow 400µs and ntrpt3ms
enable_interrupts(int_timer1);
enable_interrupts(global);

so what is the solution if i want to interrupts every 200µs during 3s?
plz help me...
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nfs
Haplo



Joined: 06 Sep 2003
Posts: 659
Location: Sydney, Australia

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PostPosted: Fri Apr 30, 2004 7:28 pm     Reply with quote
Looks like

Code:
setup_timer_1(T1_internal|T1_div_by_2); //overflow 200µs
enable_interrupts(int_timer1);
enable_interrupts(global);


should work. You can disable the interrupts after the 3 second period. What is the purpose of the for statement?
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