timer128_8c-source.html

ATMEL的AVR单片机库文件

00224 }
00225 
<a name="l00226"></a><a class="code" href="timer128_8c.html#a26">00226</a> <span class="keywordtype">long</span> <a class="code" href="timer_8c.html#a18">timer0GetOverflowCount</a>(<span class="keywordtype">void</span>)
00227 {
00228     <span class="comment">// return the current timer overflow count</span>
00229     <span class="comment">// (this is since the last timer0ClearOverflowCount() command was called)</span>
00230     <span class="keywordflow">return</span> Timer0Reg0;
00231 }
00232 
00233 <span class="keywordtype">void</span> timer2ClearOverflowCount(<span class="keywordtype">void</span>)
00234 {
00235     <span class="comment">// clear the timer overflow counter registers</span>
00236     Timer2Reg0 = 0; <span class="comment">// initialize time registers</span>
00237     Timer2Reg1 = 0; <span class="comment">// initialize time registers</span>
00238 }
00239 
00240 <span class="keywordtype">long</span> timer2GetOverflowCount(<span class="keywordtype">void</span>)
00241 {
00242     <span class="comment">// return the current timer overflow count</span>
00243     <span class="comment">// (this is since the last timer2ClearOverflowCount() command was called)</span>
00244     <span class="keywordflow">return</span> Timer2Reg0;
00245 }
00246 
00247 
<a name="l00248"></a><a class="code" href="timer128_8c.html#a29">00248</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a59">timer1PWMInit</a>(u08 bitRes)
00249 {
00250     <span class="comment">// configures timer1 for use with PWM output</span>
00251     <span class="comment">// on pins OC1A, OC1B, and OC1C</span>
00252 
00253     <span class="comment">// enable Timer1 as 8,9,10bit PWM</span>
00254     <span class="keywordflow">if</span>(bitRes == 9)
00255     {   <span class="comment">// 9bit mode</span>
00256         sbi(TCCR1A,WGMA1);
00257         cbi(TCCR1A,WGMA0);
00258     }
00259     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00260     {   <span class="comment">// 10bit mode</span>
00261         sbi(TCCR1A,WGMA1);
00262         sbi(TCCR1A,WGMA0);
00263     }
00264     <span class="keywordflow">else</span>
00265     {   <span class="comment">// default 8bit mode</span>
00266         cbi(TCCR1A,WGMA1);
00267         sbi(TCCR1A,WGMA0);
00268     }
00269 
00270     <span class="comment">// set clear-timer-on-compare-match</span>
00271     <span class="comment">//cbi(TCCR1B,CTC1);</span>
00272     <span class="comment">// clear output compare value A</span>
00273     outb(OCR1AH, 0);
00274     outb(OCR1AL, 0);
00275     <span class="comment">// clear output compare value B</span>
00276     outb(OCR1BH, 0);
00277     outb(OCR1BL, 0);
00278     <span class="comment">// clear output compare value C</span>
00279     outb(OCR1CH, 0);
00280     outb(OCR1CL, 0);
00281 }
00282 
<a name="l00283"></a><a class="code" href="timer128_8h.html#a60">00283</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a60">timer1PWMInitICR</a>(u16 topcount)
00284 {
00285     <span class="comment">// set PWM mode with ICR top-count</span>
00286     cbi(TCCR1A,WGM10);
00287     sbi(TCCR1A,WGM11);
00288     sbi(TCCR1B,WGM12);
00289     sbi(TCCR1B,WGM13);
00290     
00291     <span class="comment">// set top count value</span>
00292     ICR1H = (u08)(topcount&gt;&gt;8);
00293     ICR1L = (u08)topcount;
00294     
00295     <span class="comment">// clear output compare value A</span>
00296     outb(OCR1AH, 0);
00297     outb(OCR1AL, 0);
00298     <span class="comment">// clear output compare value B</span>
00299     outb(OCR1BH, 0);
00300     outb(OCR1BL, 0);
00301     <span class="comment">// clear output compare value C</span>
00302     outb(OCR1CH, 0);
00303     outb(OCR1CL, 0);
00304 }
00305 
<a name="l00306"></a><a class="code" href="timer128_8c.html#a31">00306</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a20">timer1PWMOff</a>(<span class="keywordtype">void</span>)
00307 {
00308     <span class="comment">// turn off PWM on Timer1</span>
00309     cbi(TCCR1A,WGMA1);
00310     cbi(TCCR1A,WGMA0);
00311     <span class="comment">// clear (disable) clear-timer-on-compare-match</span>
00312     <span class="comment">//cbi(TCCR1B,CTC1);</span>
00313     <span class="comment">// set PWM1A/B/C (OutputCompare action) to none</span>
00314     <a class="code" href="timer_8c.html#a23">timer1PWMAOff</a>();
00315     <a class="code" href="timer_8c.html#a24">timer1PWMBOff</a>();
00316     <a class="code" href="timer128_8c.html#a37">timer1PWMCOff</a>();
00317 }
00318 
<a name="l00319"></a><a class="code" href="timer128_8c.html#a32">00319</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a21">timer1PWMAOn</a>(<span class="keywordtype">void</span>)
00320 {
00321     <span class="comment">// turn on channel A (OC1A) PWM output</span>
00322     <span class="comment">// set OC1A as non-inverted PWM</span>
00323     sbi(TCCR1A,COMA1);
00324     cbi(TCCR1A,COMA0);
00325 }
00326 
<a name="l00327"></a><a class="code" href="timer128_8c.html#a33">00327</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a22">timer1PWMBOn</a>(<span class="keywordtype">void</span>)
00328 {
00329     <span class="comment">// turn on channel B (OC1B) PWM output</span>
00330     <span class="comment">// set OC1B as non-inverted PWM</span>
00331     sbi(TCCR1A,COMB1);
00332     cbi(TCCR1A,COMB0);
00333 }
00334 
<a name="l00335"></a><a class="code" href="timer128_8h.html#a64">00335</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8c.html#a34">timer1PWMCOn</a>(<span class="keywordtype">void</span>)
00336 {
00337     <span class="comment">// turn on channel C (OC1C) PWM output</span>
00338     <span class="comment">// set OC1C as non-inverted PWM</span>
00339     sbi(TCCR1A,COMC1);
00340     cbi(TCCR1A,COMC0);
00341 }
00342 
<a name="l00343"></a><a class="code" href="timer128_8c.html#a35">00343</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a23">timer1PWMAOff</a>(<span class="keywordtype">void</span>)
00344 {
00345     <span class="comment">// turn off channel A (OC1A) PWM output</span>
00346     <span class="comment">// set OC1A (OutputCompare action) to none</span>
00347     cbi(TCCR1A,COMA1);
00348     cbi(TCCR1A,COMA0);
00349 }
00350 
<a name="l00351"></a><a class="code" href="timer128_8c.html#a36">00351</a> <span class="keywordtype">void</span> <a class="code" href="timer_8c.html#a24">timer1PWMBOff</a>(<span class="keywordtype">void</span>)
00352 {
00353     <span class="comment">// turn off channel B (OC1B) PWM output</span>
00354     <span class="comment">// set OC1B (OutputCompare action) to none</span>
00355     cbi(TCCR1A,COMB1);
00356     cbi(TCCR1A,COMB0);
00357 }
00358 
<a name="l00359"></a><a class="code" href="timer128_8h.html#a67">00359</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8c.html#a37">timer1PWMCOff</a>(<span class="keywordtype">void</span>)
00360 {
00361     <span class="comment">// turn off channel C (OC1C) PWM output</span>
00362     <span class="comment">// set OC1C (OutputCompare action) to none</span>
00363     cbi(TCCR1A,COMC1);
00364     cbi(TCCR1A,COMC0);
00365 }
00366 
<a name="l00367"></a><a class="code" href="timer128_8c.html#a38">00367</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a68">timer1PWMASet</a>(u16 pwmDuty)
00368 {
00369     <span class="comment">// set PWM (output compare) duty for channel A</span>
00370     <span class="comment">// this PWM output is generated on OC1A pin</span>
00371     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00372     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00373     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00374     outp( (pwmDuty&gt;&gt;8), OCR1AH);        <span class="comment">// set the high 8bits of OCR1A</span>
00375     outp( (pwmDuty&amp;0x00FF), OCR1AL);    <span class="comment">// set the low 8bits of OCR1A</span>
00376 }
00377 
<a name="l00378"></a><a class="code" href="timer128_8c.html#a39">00378</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a69">timer1PWMBSet</a>(u16 pwmDuty)
00379 {
00380     <span class="comment">// set PWM (output compare) duty for channel B</span>
00381     <span class="comment">// this PWM output is generated on OC1B pin</span>
00382     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00383     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00384     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00385     outp( (pwmDuty&gt;&gt;8), OCR1BH);        <span class="comment">// set the high 8bits of OCR1B</span>
00386     outp( (pwmDuty&amp;0x00FF), OCR1BL);    <span class="comment">// set the low 8bits of OCR1B</span>
00387 }
00388 
<a name="l00389"></a><a class="code" href="timer128_8h.html#a70">00389</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a70">timer1PWMCSet</a>(u16 pwmDuty)
00390 {
00391     <span class="comment">// set PWM (output compare) duty for channel C</span>
00392     <span class="comment">// this PWM output is generated on OC1C pin</span>
00393     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00394     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00395     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00396     outp( (pwmDuty&gt;&gt;8), OCR1CH);        <span class="comment">// set the high 8bits of OCR1C</span>
00397     outp( (pwmDuty&amp;0x00FF), OCR1CL);    <span class="comment">// set the low 8bits of OCR1C</span>
00398 }
00399 
00400 
<a name="l00401"></a><a class="code" href="timer128_8h.html#a71">00401</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a71">timer3PWMInit</a>(u08 bitRes)
00402 {
00403     <span class="comment">// configures timer1 for use with PWM output</span>
00404     <span class="comment">// on pins OC3A, OC3B, and OC3C</span>
00405 
00406     <span class="comment">// enable Timer3 as 8,9,10bit PWM</span>
00407     <span class="keywordflow">if</span>(bitRes == 9)
00408     {   <span class="comment">// 9bit mode</span>
00409         sbi(TCCR3A,WGMA1);
00410         cbi(TCCR3A,WGMA0);
00411     }
00412     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00413     {   <span class="comment">// 10bit mode</span>
00414         sbi(TCCR3A,WGMA1);
00415         sbi(TCCR3A,WGMA0);
00416     }
00417     <span class="keywordflow">else</span>
00418     {   <span class="comment">// default 8bit mode</span>
00419         cbi(TCCR3A,WGMA1);
00420         sbi(TCCR3A,WGMA0);
00421     }
00422 
00423     <span class="comment">// set clear-timer-on-compare-match</span>
00424     <span class="comment">//cbi(TCCR3B,CTC1);</span>
00425     <span class="comment">// clear output compare value A</span>
00426     outb(OCR3AH, 0);
00427     outb(OCR3AL, 0);
00428     <span class="comment">// clear output compare value B</span>
00429     outb(OCR3BH, 0);
00430     outb(OCR3BL, 0);
00431     <span class="comment">// clear output compare value B</span>
00432     outb(OCR3CH, 0);
00433     outb(OCR3CL, 0);
00434 }
00435 
<a name="l00436"></a><a class="code" href="timer128_8h.html#a72">00436</a> <span class="keywordtype">void</span> <a class="code" href="timer128_8h.html#a72">timer3PWMInitICR</a>(u16 topcount)
00437 {
00438     <span class="comment">// set PWM mode with ICR top-count</span>
00439     cbi(TCCR3A,WGM30);
00440     sbi(TCCR3A,WGM31);
00441     sbi(TCCR3B,WGM32);
00442     sbi(TCCR3B,WGM33);
00443     
00444     <span class="comment">// set top count value</span>
00445     ICR3H = (u08)(topcount&gt;&gt;8);
00446     ICR3L = (u08)topcount;
00447     
00448     <span class="comment">// clear output compare value A</span>
00449     outb(OCR3AH, 0);
00450     outb(OCR3AL, 0);
00451     <span class="comment">// clear output compare value B</span>
00452     outb(OCR3BH, 0);
00453     outb(OCR3BL, 0);