timer128_8c-source.html

国外牛人公开的ＡＶＲ代码

00229             <span class="comment">// save power by idling the processor</span>
00230             set_sleep_mode(SLEEP_MODE_IDLE);
00231             sleep_mode();
00232         }
00233     }
00234 }
00235 
<a name="l00236"></a><a class="code" href="group__timer.html#ga11">00236</a> <span class="keywordtype">void</span> <a class="code" href="group__timer.html#ga11">timer0ClearOverflowCount</a>(<span class="keywordtype">void</span>)
00237 {
00238     <span class="comment">// clear the timer overflow counter registers</span>
00239     Timer0Reg0 = 0; <span class="comment">// initialize time registers</span>
00240     Timer0Reg1 = 0; <span class="comment">// initialize time registers</span>
00241 }
00242 
<a name="l00243"></a><a class="code" href="group__timer.html#ga12">00243</a> <span class="keywordtype">long</span> <a class="code" href="group__timer.html#ga12">timer0GetOverflowCount</a>(<span class="keywordtype">void</span>)
00244 {
00245     <span class="comment">// return the current timer overflow count</span>
00246     <span class="comment">// (this is since the last timer0ClearOverflowCount() command was called)</span>
00247     <span class="keywordflow">return</span> Timer0Reg0;
00248 }
00249 
00250 <span class="keywordtype">void</span> timer2ClearOverflowCount(<span class="keywordtype">void</span>)
00251 {
00252     <span class="comment">// clear the timer overflow counter registers</span>
00253     Timer2Reg0 = 0; <span class="comment">// initialize time registers</span>
00254     Timer2Reg1 = 0; <span class="comment">// initialize time registers</span>
00255 }
00256 
00257 <span class="keywordtype">long</span> timer2GetOverflowCount(<span class="keywordtype">void</span>)
00258 {
00259     <span class="comment">// return the current timer overflow count</span>
00260     <span class="comment">// (this is since the last timer2ClearOverflowCount() command was called)</span>
00261     <span class="keywordflow">return</span> Timer2Reg0;
00262 }
00263 
00264 
<a name="l00265"></a><a class="code" href="group__timerpwm.html#ga0">00265</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga0">timer1PWMInit</a>(u08 bitRes)
00266 {
00267     <span class="comment">// configures timer1 for use with PWM output</span>
00268     <span class="comment">// on pins OC1A, OC1B, and OC1C</span>
00269 
00270     <span class="comment">// enable Timer1 as 8,9,10bit PWM</span>
00271     <span class="keywordflow">if</span>(bitRes == 9)
00272     {   <span class="comment">// 9bit mode</span>
00273         sbi(TCCR1A,WGMA1);
00274         cbi(TCCR1A,WGMA0);
00275     }
00276     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00277     {   <span class="comment">// 10bit mode</span>
00278         sbi(TCCR1A,WGMA1);
00279         sbi(TCCR1A,WGMA0);
00280     }
00281     <span class="keywordflow">else</span>
00282     {   <span class="comment">// default 8bit mode</span>
00283         cbi(TCCR1A,WGMA1);
00284         sbi(TCCR1A,WGMA0);
00285     }
00286 
00287     <span class="comment">// set clear-timer-on-compare-match</span>
00288     <span class="comment">//cbi(TCCR1B,CTC1);</span>
00289     <span class="comment">// clear output compare value A</span>
00290     outb(OCR1AH, 0);
00291     outb(OCR1AL, 0);
00292     <span class="comment">// clear output compare value B</span>
00293     outb(OCR1BH, 0);
00294     outb(OCR1BL, 0);
00295     <span class="comment">// clear output compare value C</span>
00296     outb(OCR1CH, 0);
00297     outb(OCR1CL, 0);
00298 }
00299 
<a name="l00300"></a><a class="code" href="group__timer128.html#ga22">00300</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga1">timer1PWMInitICR</a>(u16 topcount)
00301 {
00302     <span class="comment">// set PWM mode with ICR top-count</span>
00303     cbi(TCCR1A,WGM10);
00304     sbi(TCCR1A,WGM11);
00305     sbi(TCCR1B,WGM12);
00306     sbi(TCCR1B,WGM13);
00307     
00308     <span class="comment">// set top count value</span>
00309     ICR1H = (u08)(topcount&gt;&gt;8);
00310     ICR1L = (u08)topcount;
00311     
00312     <span class="comment">// clear output compare value A</span>
00313     outb(OCR1AH, 0);
00314     outb(OCR1AL, 0);
00315     <span class="comment">// clear output compare value B</span>
00316     outb(OCR1BH, 0);
00317     outb(OCR1BL, 0);
00318     <span class="comment">// clear output compare value C</span>
00319     outb(OCR1CH, 0);
00320     outb(OCR1CL, 0);
00321 }
00322 
<a name="l00323"></a><a class="code" href="group__timerpwm.html#ga2">00323</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga2">timer1PWMOff</a>(<span class="keywordtype">void</span>)
00324 {
00325     <span class="comment">// turn off PWM on Timer1</span>
00326     cbi(TCCR1A,WGMA1);
00327     cbi(TCCR1A,WGMA0);
00328     <span class="comment">// clear (disable) clear-timer-on-compare-match</span>
00329     <span class="comment">//cbi(TCCR1B,CTC1);</span>
00330     <span class="comment">// set PWM1A/B/C (OutputCompare action) to none</span>
00331     <a class="code" href="group__timerpwm.html#ga5">timer1PWMAOff</a>();
00332     <a class="code" href="group__timerpwm.html#ga6">timer1PWMBOff</a>();
00333     <a class="code" href="group__timer128.html#ga29">timer1PWMCOff</a>();
00334 }
00335 
<a name="l00336"></a><a class="code" href="group__timerpwm.html#ga3">00336</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga3">timer1PWMAOn</a>(<span class="keywordtype">void</span>)
00337 {
00338     <span class="comment">// turn on channel A (OC1A) PWM output</span>
00339     <span class="comment">// set OC1A as non-inverted PWM</span>
00340     sbi(TCCR1A,COMA1);
00341     cbi(TCCR1A,COMA0);
00342 }
00343 
<a name="l00344"></a><a class="code" href="group__timerpwm.html#ga4">00344</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga4">timer1PWMBOn</a>(<span class="keywordtype">void</span>)
00345 {
00346     <span class="comment">// turn on channel B (OC1B) PWM output</span>
00347     <span class="comment">// set OC1B as non-inverted PWM</span>
00348     sbi(TCCR1A,COMB1);
00349     cbi(TCCR1A,COMB0);
00350 }
00351 
<a name="l00352"></a><a class="code" href="group__timer128.html#ga26">00352</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga26">timer1PWMCOn</a>(<span class="keywordtype">void</span>)
00353 {
00354     <span class="comment">// turn on channel C (OC1C) PWM output</span>
00355     <span class="comment">// set OC1C as non-inverted PWM</span>
00356     sbi(TCCR1A,COMC1);
00357     cbi(TCCR1A,COMC0);
00358 }
00359 
<a name="l00360"></a><a class="code" href="group__timerpwm.html#ga5">00360</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga5">timer1PWMAOff</a>(<span class="keywordtype">void</span>)
00361 {
00362     <span class="comment">// turn off channel A (OC1A) PWM output</span>
00363     <span class="comment">// set OC1A (OutputCompare action) to none</span>
00364     cbi(TCCR1A,COMA1);
00365     cbi(TCCR1A,COMA0);
00366 }
00367 
<a name="l00368"></a><a class="code" href="group__timerpwm.html#ga6">00368</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga6">timer1PWMBOff</a>(<span class="keywordtype">void</span>)
00369 {
00370     <span class="comment">// turn off channel B (OC1B) PWM output</span>
00371     <span class="comment">// set OC1B (OutputCompare action) to none</span>
00372     cbi(TCCR1A,COMB1);
00373     cbi(TCCR1A,COMB0);
00374 }
00375 
<a name="l00376"></a><a class="code" href="group__timer128.html#ga29">00376</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga29">timer1PWMCOff</a>(<span class="keywordtype">void</span>)
00377 {
00378     <span class="comment">// turn off channel C (OC1C) PWM output</span>
00379     <span class="comment">// set OC1C (OutputCompare action) to none</span>
00380     cbi(TCCR1A,COMC1);
00381     cbi(TCCR1A,COMC0);
00382 }
00383 
<a name="l00384"></a><a class="code" href="group__timerpwm.html#ga7">00384</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga7">timer1PWMASet</a>(u16 pwmDuty)
00385 {
00386     <span class="comment">// set PWM (output compare) duty for channel A</span>
00387     <span class="comment">// this PWM output is generated on OC1A pin</span>
00388     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00389     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00390     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00391     outb(OCR1AH, (pwmDuty&gt;&gt;8));     <span class="comment">// set the high 8bits of OCR1A</span>
00392     outb(OCR1AL, (pwmDuty&amp;0x00FF)); <span class="comment">// set the low 8bits of OCR1A</span>
00393 }
00394 
<a name="l00395"></a><a class="code" href="group__timerpwm.html#ga8">00395</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga8">timer1PWMBSet</a>(u16 pwmDuty)
00396 {
00397     <span class="comment">// set PWM (output compare) duty for channel B</span>
00398     <span class="comment">// this PWM output is generated on OC1B pin</span>
00399     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00400     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00401     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00402     outb(OCR1BH, (pwmDuty&gt;&gt;8));     <span class="comment">// set the high 8bits of OCR1B</span>
00403     outb(OCR1BL, (pwmDuty&amp;0x00FF)); <span class="comment">// set the low 8bits of OCR1B</span>
00404 }
00405 
<a name="l00406"></a><a class="code" href="group__timer128.html#ga32">00406</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga32">timer1PWMCSet</a>(u16 pwmDuty)
00407 {
00408     <span class="comment">// set PWM (output compare) duty for channel C</span>
00409     <span class="comment">// this PWM output is generated on OC1C pin</span>
00410     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00411     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00412     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00413     outb(OCR1CH, (pwmDuty&gt;&gt;8));     <span class="comment">// set the high 8bits of OCR1C</span>
00414     outb(OCR1CL, (pwmDuty&amp;0x00FF)); <span class="comment">// set the low 8bits of OCR1C</span>
00415 }
00416 
00417 
<a name="l00418"></a><a class="code" href="group__timer128.html#ga33">00418</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga33">timer3PWMInit</a>(u08 bitRes)
00419 {
00420     <span class="comment">// configures timer1 for use with PWM output</span>
00421     <span class="comment">// on pins OC3A, OC3B, and OC3C</span>
00422 
00423     <span class="comment">// enable Timer3 as 8,9,10bit PWM</span>
00424     <span class="keywordflow">if</span>(bitRes == 9)
00425     {   <span class="comment">// 9bit mode</span>
00426         sbi(TCCR3A,WGMA1);
00427         cbi(TCCR3A,WGMA0);
00428     }
00429     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00430     {   <span class="comment">// 10bit mode</span>
00431         sbi(TCCR3A,WGMA1);
00432         sbi(TCCR3A,WGMA0);
00433     }
00434     <span class="keywordflow">else</span>
00435     {   <span class="comment">// default 8bit mode</span>
00436         cbi(TCCR3A,WGMA1);
00437         sbi(TCCR3A,WGMA0);
00438     }
00439 
00440     <span class="comment">// set clear-timer-on-compare-match</span>
00441     <span class="comment">//cbi(TCCR3B,CTC1);</span>
00442     <span class="comment">// clear output compare value A</span>
00443     outb(OCR3AH, 0);
00444     outb(OCR3AL, 0);
00445     <span class="comment">// clear output compare value B</span>
00446     outb(OCR3BH, 0);
00447     outb(OCR3BL, 0);
00448     <span class="comment">// clear output compare value B</span>
00449     outb(OCR3CH, 0);
00450     outb(OCR3CL, 0);
00451 }
00452 
<a name="l00453"></a><a class="code" href="group__timer128.html#ga34">00453</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga34">timer3PWMInitICR</a>(u16 topcount)
00454 {
00455     <span class="comment">// set PWM mode with ICR top-count</span>
00456     cbi(TCCR3A,WGM30);
00457     sbi(TCCR3A,WGM31);
00458     sbi(TCCR3B,WGM32);
00459     sbi(TCCR3B,WGM33);
00460     
00461     <span class="comment">// set top count value</span>
00462     ICR3H = (u08)(topcount&gt;&gt;8);
00463     ICR3L = (u08)topcount;