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pre
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<div class=Section1>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>A
nemusíš to icr1 nastavovat znovu v přerušení ?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif";font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
Hw-list [mailto:hw-list-bounces@list.hw.cz] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Martin Záruba<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, October 10, 2023
7:52 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Martin Zaruba<br>
<b><span style='font-weight:bold'>Subject:</span></b> Přerušení časovačem na
AtMega<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>Nastavil
jsem<o:p></o:p></span></font></p>
<div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> TCCR1A = </span></font><font size=2 color="#005c5f"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#005C5F'>0</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;</span></font><font size=2 color="#95a5a6"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#95A5A6'>
// Vynulování registru TCCR1A</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> TCCR1B = </span></font><font size=2 color="#005c5f"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#005C5F'>0</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;</span></font><font size=2 color="#95a5a6"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#95A5A6'>
// Vynulování registru TCCR1B</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#95A5A6'> // Nastavení režimu Fast PWM (TOP = ICR1)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> TCCR1A |= </span></font><font size=2 color="#434f54"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#005c5f" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#005C5F'>1</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>
<< WGM11</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> TCCR1B |= </span></font><font size=2 color="#434f54"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#005c5f" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#005C5F'>1</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>
<< WGM13</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'> | </span></font><font size=2 color="#434f54"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#005c5f" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#005C5F'>1</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>
<< WGM12</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#95A5A6'> // Nastavení hodinového děliče na 64 (frekvence časovače
= frekvence CPU / 64)</span></font><font size=2 color="#4e5b61" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> TCCR1B |= </span></font><font size=2 color="#434f54"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#005c5f" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#005C5F'>1</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>
<< CS11</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'> | </span></font><font size=2 color="#434f54"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#005c5f" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#005C5F'>1</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>
<< CS10</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#95A5A6'> // Nastavení intervalu pro generování přerušení (100 us)
- pro frekvenci CPU 16 MHz</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#95A5A6'> // ICR1 = (F_CPU / (časový interval * hodinový dělič)) -
1</span></font><font size=2 color="#4e5b61" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> ICR1 = </span></font><font size=2 color="#005c5f"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#005C5F'>24</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;</span></font><font size=2 color="#95a5a6"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#95A5A6'>
// 100 us při frekvenci CPU 16 MHz a hodinovém děliči 64</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#95A5A6'> // Povolení přerušení od časovače Timer/Counter1</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> TIMSK1 |= </span></font><font size=2 color="#434f54"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#005c5f" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#005C5F'>1</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>
<< TOIE1</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>)</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'>a rutina přerušení je zatím zcela triviální<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#d35400" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#D35400'>ISR</span></font><font size=2 color="#434f54" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#434F54'>(</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>TIMER1_OVF_vect</span></font><font size=2
color="#434f54" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#434F54'>)</span></font><font size=2 color="#4e5b61" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'> </span></font><font
size=2 color="#434f54" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#434F54'>{</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> </span></font><font size=2 color="#d35400" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#D35400'>cli</span></font><font
size=2 color="#434f54" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#434F54'>()</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>;</span></font><font
size=2 color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#95A5A6'> // Vypnutí globálních přerušení</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> PORTA=</span></font><font size=2 color="#005c5f"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#005C5F'>0</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> PORTA=</span></font><font size=2 color="#005c5f"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#005C5F'>0xFF</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'>;<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'> </span></font><font size=2 color="#d35400" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#D35400'>sei</span></font><font
size=2 color="#434f54" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#434F54'>()</span></font><font size=2 color="#4e5b61"
face=Consolas><span style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'>;</span></font><font
size=2 color="#95a5a6" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#95A5A6'> // Zapnutí globálních přerušení</span></font><font
size=2 color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:
Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
<div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#434f54" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#434F54'>}</span></font><font size=2 color="#4e5b61" face=Consolas><span
style='font-size:10.5pt;font-family:Consolas;color:#4E5B61'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='line-height:14.25pt;background:white'><font size=2
color="#4e5b61" face=Consolas><span style='font-size:10.5pt;font-family:Consolas;
color:#4E5B61'>Na všech bitech portu A jsou krásné obdélnikové pulzy. Ale
perioda vyvolání pulzů je sice cca 100uS ale chaoticky kolísá. Co dělám blbě?<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'>-- <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Martin Záruba<o:p></o:p></span></font></pre></div>
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