timer_8c-source.html

ATMEL的AVR单片机库文件

00229 <span class="comment">    TimerPauseReg = 0;</span>
00230 <span class="comment">    while(TimerPauseReg &lt; pause);</span>
00231 <span class="comment"></span>
00232 <span class="comment">    */</span>
00233 }
00234 
<a name="l00235"></a><a class="code" href="timer128_8h.html#a55">00235</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a17">timer0ClearOverflowCount</a>(<span class="keywordtype">void</span>)
00236 {
00237     <span class="comment">// clear the timer overflow counter registers</span>
00238     Timer0Reg0 = 0; <span class="comment">// initialize time registers</span>
00239 }
00240 
<a name="l00241"></a><a class="code" href="timer128_8h.html#a56">00241</a> <span class="keywordtype">long</span> <a class="code" href="timer_8c.html#a18">timer0GetOverflowCount</a>(<span class="keywordtype">void</span>)
00242 {
00243     <span class="comment">// return the current timer overflow count</span>
00244     <span class="comment">// (this is since the last timer0ClearOverflowCount() command was called)</span>
00245     <span class="keywordflow">return</span> Timer0Reg0;
00246 }
00247 
00248 <span class="preprocessor">#ifdef TCNT2    // support timer2 only if it exists</span>
00249 <span class="preprocessor"></span><span class="keywordtype">void</span> timer2ClearOverflowCount(<span class="keywordtype">void</span>)
00250 {
00251     <span class="comment">// clear the timer overflow counter registers</span>
00252     Timer2Reg0 = 0; <span class="comment">// initialize time registers</span>
00253 }
00254 
00255 <span class="keywordtype">long</span> timer2GetOverflowCount(<span class="keywordtype">void</span>)
00256 {
00257     <span class="comment">// return the current timer overflow count</span>
00258     <span class="comment">// (this is since the last timer2ClearOverflowCount() command was called)</span>
00259     <span class="keywordflow">return</span> Timer2Reg0;
00260 }
00261 <span class="preprocessor">#endif</span>
00262 <span class="preprocessor"></span>
<a name="l00263"></a><a class="code" href="timer128_8h.html#a59">00263</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a59">timer1PWMInit</a>(u08 bitRes)
00264 {
00265     <span class="comment">// configures timer1 for use with PWM output</span>
00266     <span class="comment">// on OC1A and OC1B pins</span>
00267 
00268     <span class="comment">// enable timer1 as 8,9,10bit PWM</span>
00269     <span class="keywordflow">if</span>(bitRes == 9)
00270     {   <span class="comment">// 9bit mode</span>
00271         sbi(TCCR1A,PWM11);
00272         cbi(TCCR1A,PWM10);
00273     }
00274     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00275     {   <span class="comment">// 10bit mode</span>
00276         sbi(TCCR1A,PWM11);
00277         sbi(TCCR1A,PWM10);
00278     }
00279     <span class="keywordflow">else</span>
00280     {   <span class="comment">// default 8bit mode</span>
00281         cbi(TCCR1A,PWM11);
00282         sbi(TCCR1A,PWM10);
00283     }
00284 
00285     <span class="comment">// clear output compare value A</span>
00286     outb(OCR1AH, 0);
00287     outb(OCR1AL, 0);
00288     <span class="comment">// clear output compare value B</span>
00289     outb(OCR1BH, 0);
00290     outb(OCR1BL, 0);
00291 }
00292 
00293 <span class="preprocessor">#ifdef WGM10</span>
00294 <span class="preprocessor"></span><span class="comment">// include support for arbitrary top-count PWM</span>
00295 <span class="comment">// on new AVR processors that support it</span>
00296 <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a60">timer1PWMInitICR</a>(u16 topcount)
00297 {
00298     <span class="comment">// set PWM mode with ICR top-count</span>
00299     cbi(TCCR1A,WGM10);
00300     sbi(TCCR1A,WGM11);
00301     sbi(TCCR1B,WGM12);
00302     sbi(TCCR1B,WGM13);
00303     
00304     <span class="comment">// set top count value</span>
00305     ICR1 = topcount;
00306     
00307     <span class="comment">// clear output compare value A</span>
00308     OCR1A = 0;
00309     <span class="comment">// clear output compare value B</span>
00310     OCR1B = 0;
00311 
00312 }
00313 <span class="preprocessor">#endif</span>
00314 <span class="preprocessor"></span>
<a name="l00315"></a><a class="code" href="timer128_8h.html#a61">00315</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a20">timer1PWMOff</a>(<span class="keywordtype">void</span>)
00316 {
00317     <span class="comment">// turn off timer1 PWM mode</span>
00318     cbi(TCCR1A,PWM11);
00319     cbi(TCCR1A,PWM10);
00320     <span class="comment">// set PWM1A/B (OutputCompare action) to none</span>
00321     <a class="code" href="timer_8c.html#a23">timer1PWMAOff</a>();
00322     <a class="code" href="timer_8c.html#a24">timer1PWMBOff</a>();
00323 }
00324 
<a name="l00325"></a><a class="code" href="timer128_8h.html#a62">00325</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a21">timer1PWMAOn</a>(<span class="keywordtype">void</span>)
00326 {
00327     <span class="comment">// turn on channel A (OC1A) PWM output</span>
00328     <span class="comment">// set OC1A as non-inverted PWM</span>
00329     sbi(TCCR1A,COM1A1);
00330     cbi(TCCR1A,COM1A0);
00331 }
00332 
<a name="l00333"></a><a class="code" href="timer128_8h.html#a63">00333</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a22">timer1PWMBOn</a>(<span class="keywordtype">void</span>)
00334 {
00335     <span class="comment">// turn on channel B (OC1B) PWM output</span>
00336     <span class="comment">// set OC1B as non-inverted PWM</span>
00337     sbi(TCCR1A,COM1B1);
00338     cbi(TCCR1A,COM1B0);
00339 }
00340 
<a name="l00341"></a><a class="code" href="timer128_8h.html#a65">00341</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a23">timer1PWMAOff</a>(<span class="keywordtype">void</span>)
00342 {
00343     <span class="comment">// turn off channel A (OC1A) PWM output</span>
00344     <span class="comment">// set OC1A (OutputCompare action) to none</span>
00345     cbi(TCCR1A,COM1A1);
00346     cbi(TCCR1A,COM1A0);
00347 }
00348 
<a name="l00349"></a><a class="code" href="timer128_8h.html#a66">00349</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a24">timer1PWMBOff</a>(<span class="keywordtype">void</span>)
00350 {
00351     <span class="comment">// turn off channel B (OC1B) PWM output</span>
00352     <span class="comment">// set OC1B (OutputCompare action) to none</span>
00353     cbi(TCCR1A,COM1B1);
00354     cbi(TCCR1A,COM1B0);
00355 }
00356 
<a name="l00357"></a><a class="code" href="timer128_8h.html#a68">00357</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a68">timer1PWMASet</a>(u16 pwmDuty)
00358 {
00359     <span class="comment">// set PWM (output compare) duty for channel A</span>
00360     <span class="comment">// this PWM output is generated on OC1A pin</span>
00361     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00362     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00363     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00364     <span class="comment">//outp( (pwmDuty&gt;&gt;8), OCR1AH);      // set the high 8bits of OCR1A</span>
00365     <span class="comment">//outp( (pwmDuty&amp;0x00FF), OCR1AL);  // set the low 8bits of OCR1A</span>
00366     OCR1A = pwmDuty;
00367 }
00368 
<a name="l00369"></a><a class="code" href="timer128_8h.html#a69">00369</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a69">timer1PWMBSet</a>(u16 pwmDuty)
00370 {
00371     <span class="comment">// set PWM (output compare) duty for channel B</span>
00372     <span class="comment">// this PWM output is generated on OC1B pin</span>
00373     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00374     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00375     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00376     <span class="comment">//outp( (pwmDuty&gt;&gt;8), OCR1BH);      // set the high 8bits of OCR1B</span>
00377     <span class="comment">//outp( (pwmDuty&amp;0x00FF), OCR1BL);  // set the low 8bits of OCR1B</span>
00378     OCR1B = pwmDuty;
00379 }
00380 <span class="comment"></span>
00381 <span class="comment">//! Interrupt handler for tcnt0 overflow interrupt</span>
<a name="l00382"></a><a class="code" href="timer_8c.html#a27">00382</a> <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OVERFLOW0)
00383 {
00384     Timer0Reg0++;           <span class="comment">// increment low-order counter</span>
00385 
00386     <span class="comment">// increment pause counter</span>
00387     TimerPauseReg++;
00388 
00389     <span class="comment">// if a user function is defined, execute it too</span>
00390     <span class="keywordflow">if</span>(TimerIntFunc[TIMER0OVERFLOW_INT])
00391         TimerIntFunc[TIMER0OVERFLOW_INT]();
00392 }
00393 <span class="comment"></span>
00394 <span class="comment">//! Interrupt handler for tcnt1 overflow interrupt</span>
<a name="l00395"></a><a class="code" href="timer_8c.html#a28">00395</a> <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OVERFLOW1)
00396 {
00397     <span class="comment">// if a user function is defined, execute it</span>
00398     <span class="keywordflow">if</span>(TimerIntFunc[TIMER1OVERFLOW_INT])
00399         TimerIntFunc[TIMER1OVERFLOW_INT]();
00400 }
00401 
00402 <span class="preprocessor">#ifdef TCNT2    // support timer2 only if it exists</span>
00403 <span class="preprocessor"></span><span class="comment">//! Interrupt handler for tcnt2 overflow interrupt</span>
00404 <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OVERFLOW2)
00405 {
00406     Timer2Reg0++;           <span class="comment">// increment low-order counter</span>
00407 
00408     <span class="comment">// if a user function is defined, execute it</span>
00409     <span class="keywordflow">if</span>(TimerIntFunc[TIMER2OVERFLOW_INT])
00410         TimerIntFunc[TIMER2OVERFLOW_INT]();
00411 }
00412 <span class="preprocessor">#endif</span>
00413 <span class="preprocessor"></span>
00414 <span class="preprocessor">#ifdef OCR0</span>
00415 <span class="preprocessor"></span><span class="comment">// include support for Output Compare 0 for new AVR processors that support it</span><span class="comment"></span>
00416 <span class="comment">//! Interrupt handler for OutputCompare0 match (OC0) interrupt</span>
00417 <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OUTPUT_COMPARE0)
00418 {
00419     <span class="comment">// if a user function is defined, execute it</span>
00420     <span class="keywordflow">if</span>(TimerIntFunc[TIMER0OUTCOMPARE_INT])
00421         TimerIntFunc[TIMER0OUTCOMPARE_INT]();
00422 }
00423 <span class="preprocessor">#endif</span>
00424 <span class="preprocessor"></span><span class="comment"></span>
00425 <span class="comment">//! Interrupt handler for CutputCompare1A match (OC1A) interrupt</span>
<a name="l00426"></a><a class="code" href="timer_8c.html#a29">00426</a> <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OUTPUT_COMPARE1A)
00427 {
00428     <span class="comment">// if a user function is defined, execute it</span>
00429     <span class="keywordflow">if</span>(TimerIntFunc[TIMER1OUTCOMPAREA_INT])
00430         TimerIntFunc[TIMER1OUTCOMPAREA_INT]();
00431 }
00432 <span class="comment"></span>
00433 <span class="comment">//! Interrupt handler for OutputCompare1B match (OC1B) interrupt</span>
<a name="l00434"></a><a class="code" href="timer_8c.html#a30">00434</a> <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OUTPUT_COMPARE1B)
00435 {
00436     <span class="comment">// if a user function is defined, execute it</span>
00437     <span class="keywordflow">if</span>(TimerIntFunc[TIMER1OUTCOMPAREB_INT])
00438         TimerIntFunc[TIMER1OUTCOMPAREB_INT]();
00439 }
00440 <span class="comment"></span>
00441 <span class="comment">//! Interrupt handler for InputCapture1 (IC1) interrupt</span>
<a name="l00442"></a><a class="code" href="timer_8c.html#a31">00442</a> <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_INPUT_CAPTURE1)
00443 {
00444     <span class="comment">// if a user function is defined, execute it</span>
00445     <span class="keywordflow">if</span>(TimerIntFunc[TIMER1INPUTCAPTURE_INT])
00446         TimerIntFunc[TIMER1INPUTCAPTURE_INT]();
00447 }
00448 <span class="comment"></span>
00449 <span class="comment">//! Interrupt handler for OutputCompare2 match (OC2) interrupt</span>
<a name="l00450"></a><a class="code" href="timer_8c.html#a32">00450</a> <span class="comment"></span><a class="code" href="timer128_8c.html#a66">TIMER_INTERRUPT_HANDLER</a>(SIG_OUTPUT_COMPARE2)
00451 {
00452     <span class="comment">// if a user function is defined, execute it</span>
00453     <span class="keywordflow">if</span>(TimerIntFunc[TIMER2OUTCOMPARE_INT])
00454         TimerIntFunc[TIMER2OUTCOMPARE_INT]();
00455 }
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