timer128_8c-source.html

avr cpu 库源代码 对avr单片机编程很有帮助

00228             sleep_mode();
00229         }
00230     }
00231 }
00232 
<a name="l00233"></a><a class="code" href="group__timer.html#ga11">00233</a> <span class="keywordtype">void</span> <a class="code" href="group__timer.html#ga11">timer0ClearOverflowCount</a>(<span class="keywordtype">void</span>)
00234 {
00235     <span class="comment">// clear the timer overflow counter registers</span>
00236     Timer0Reg0 = 0; <span class="comment">// initialize time registers</span>
00237     Timer0Reg1 = 0; <span class="comment">// initialize time registers</span>
00238 }
00239 
<a name="l00240"></a><a class="code" href="group__timer.html#ga12">00240</a> <span class="keywordtype">long</span> <a class="code" href="group__timer.html#ga12">timer0GetOverflowCount</a>(<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 timer0ClearOverflowCount() command was called)</span>
00244     <span class="keywordflow">return</span> Timer0Reg0;
00245 }
00246 
00247 <span class="keywordtype">void</span> timer2ClearOverflowCount(<span class="keywordtype">void</span>)
00248 {
00249     <span class="comment">// clear the timer overflow counter registers</span>
00250     Timer2Reg0 = 0; <span class="comment">// initialize time registers</span>
00251     Timer2Reg1 = 0; <span class="comment">// initialize time registers</span>
00252 }
00253 
00254 <span class="keywordtype">long</span> timer2GetOverflowCount(<span class="keywordtype">void</span>)
00255 {
00256     <span class="comment">// return the current timer overflow count</span>
00257     <span class="comment">// (this is since the last timer2ClearOverflowCount() command was called)</span>
00258     <span class="keywordflow">return</span> Timer2Reg0;
00259 }
00260 
00261 
<a name="l00262"></a><a class="code" href="group__timerpwm.html#ga0">00262</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga0">timer1PWMInit</a>(u08 bitRes)
00263 {
00264     <span class="comment">// configures timer1 for use with PWM output</span>
00265     <span class="comment">// on pins OC1A, OC1B, and OC1C</span>
00266 
00267     <span class="comment">// enable Timer1 as 8,9,10bit PWM</span>
00268     <span class="keywordflow">if</span>(bitRes == 9)
00269     {   <span class="comment">// 9bit mode</span>
00270         sbi(TCCR1A,WGMA1);
00271         cbi(TCCR1A,WGMA0);
00272     }
00273     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00274     {   <span class="comment">// 10bit mode</span>
00275         sbi(TCCR1A,WGMA1);
00276         sbi(TCCR1A,WGMA0);
00277     }
00278     <span class="keywordflow">else</span>
00279     {   <span class="comment">// default 8bit mode</span>
00280         cbi(TCCR1A,WGMA1);
00281         sbi(TCCR1A,WGMA0);
00282     }
00283 
00284     <span class="comment">// set clear-timer-on-compare-match</span>
00285     <span class="comment">//cbi(TCCR1B,CTC1);</span>
00286     <span class="comment">// clear output compare value A</span>
00287     outb(OCR1AH, 0);
00288     outb(OCR1AL, 0);
00289     <span class="comment">// clear output compare value B</span>
00290     outb(OCR1BH, 0);
00291     outb(OCR1BL, 0);
00292     <span class="comment">// clear output compare value C</span>
00293     outb(OCR1CH, 0);
00294     outb(OCR1CL, 0);
00295 }
00296 
<a name="l00297"></a><a class="code" href="group__timer128.html#ga22">00297</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga1">timer1PWMInitICR</a>(u16 topcount)
00298 {
00299     <span class="comment">// set PWM mode with ICR top-count</span>
00300     cbi(TCCR1A,WGM10);
00301     sbi(TCCR1A,WGM11);
00302     sbi(TCCR1B,WGM12);
00303     sbi(TCCR1B,WGM13);
00304     
00305     <span class="comment">// set top count value</span>
00306     ICR1H = (u08)(topcount&gt;&gt;8);
00307     ICR1L = (u08)topcount;
00308     
00309     <span class="comment">// clear output compare value A</span>
00310     outb(OCR1AH, 0);
00311     outb(OCR1AL, 0);
00312     <span class="comment">// clear output compare value B</span>
00313     outb(OCR1BH, 0);
00314     outb(OCR1BL, 0);
00315     <span class="comment">// clear output compare value C</span>
00316     outb(OCR1CH, 0);
00317     outb(OCR1CL, 0);
00318 }
00319 
<a name="l00320"></a><a class="code" href="group__timerpwm.html#ga2">00320</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga2">timer1PWMOff</a>(<span class="keywordtype">void</span>)
00321 {
00322     <span class="comment">// turn off PWM on Timer1</span>
00323     cbi(TCCR1A,WGMA1);
00324     cbi(TCCR1A,WGMA0);
00325     <span class="comment">// clear (disable) clear-timer-on-compare-match</span>
00326     <span class="comment">//cbi(TCCR1B,CTC1);</span>
00327     <span class="comment">// set PWM1A/B/C (OutputCompare action) to none</span>
00328     <a class="code" href="group__timerpwm.html#ga5">timer1PWMAOff</a>();
00329     <a class="code" href="group__timerpwm.html#ga6">timer1PWMBOff</a>();
00330     <a class="code" href="group__timer128.html#ga29">timer1PWMCOff</a>();
00331 }
00332 
<a name="l00333"></a><a class="code" href="group__timerpwm.html#ga3">00333</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga3">timer1PWMAOn</a>(<span class="keywordtype">void</span>)
00334 {
00335     <span class="comment">// turn on channel A (OC1A) PWM output</span>
00336     <span class="comment">// set OC1A as non-inverted PWM</span>
00337     sbi(TCCR1A,COMA1);
00338     cbi(TCCR1A,COMA0);
00339 }
00340 
<a name="l00341"></a><a class="code" href="group__timerpwm.html#ga4">00341</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga4">timer1PWMBOn</a>(<span class="keywordtype">void</span>)
00342 {
00343     <span class="comment">// turn on channel B (OC1B) PWM output</span>
00344     <span class="comment">// set OC1B as non-inverted PWM</span>
00345     sbi(TCCR1A,COMB1);
00346     cbi(TCCR1A,COMB0);
00347 }
00348 
<a name="l00349"></a><a class="code" href="group__timer128.html#ga26">00349</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga26">timer1PWMCOn</a>(<span class="keywordtype">void</span>)
00350 {
00351     <span class="comment">// turn on channel C (OC1C) PWM output</span>
00352     <span class="comment">// set OC1C as non-inverted PWM</span>
00353     sbi(TCCR1A,COMC1);
00354     cbi(TCCR1A,COMC0);
00355 }
00356 
<a name="l00357"></a><a class="code" href="group__timerpwm.html#ga5">00357</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga5">timer1PWMAOff</a>(<span class="keywordtype">void</span>)
00358 {
00359     <span class="comment">// turn off channel A (OC1A) PWM output</span>
00360     <span class="comment">// set OC1A (OutputCompare action) to none</span>
00361     cbi(TCCR1A,COMA1);
00362     cbi(TCCR1A,COMA0);
00363 }
00364 
<a name="l00365"></a><a class="code" href="group__timerpwm.html#ga6">00365</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga6">timer1PWMBOff</a>(<span class="keywordtype">void</span>)
00366 {
00367     <span class="comment">// turn off channel B (OC1B) PWM output</span>
00368     <span class="comment">// set OC1B (OutputCompare action) to none</span>
00369     cbi(TCCR1A,COMB1);
00370     cbi(TCCR1A,COMB0);
00371 }
00372 
<a name="l00373"></a><a class="code" href="group__timer128.html#ga29">00373</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga29">timer1PWMCOff</a>(<span class="keywordtype">void</span>)
00374 {
00375     <span class="comment">// turn off channel C (OC1C) PWM output</span>
00376     <span class="comment">// set OC1C (OutputCompare action) to none</span>
00377     cbi(TCCR1A,COMC1);
00378     cbi(TCCR1A,COMC0);
00379 }
00380 
<a name="l00381"></a><a class="code" href="group__timerpwm.html#ga7">00381</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga7">timer1PWMASet</a>(u16 pwmDuty)
00382 {
00383     <span class="comment">// set PWM (output compare) duty for channel A</span>
00384     <span class="comment">// this PWM output is generated on OC1A pin</span>
00385     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00386     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00387     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00388     outb(OCR1AH, (pwmDuty&gt;&gt;8));     <span class="comment">// set the high 8bits of OCR1A</span>
00389     outb(OCR1AL, (pwmDuty&amp;0x00FF)); <span class="comment">// set the low 8bits of OCR1A</span>
00390 }
00391 
<a name="l00392"></a><a class="code" href="group__timerpwm.html#ga8">00392</a> <span class="keywordtype">void</span> <a class="code" href="group__timerpwm.html#ga8">timer1PWMBSet</a>(u16 pwmDuty)
00393 {
00394     <span class="comment">// set PWM (output compare) duty for channel B</span>
00395     <span class="comment">// this PWM output is generated on OC1B pin</span>
00396     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00397     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00398     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00399     outb(OCR1BH, (pwmDuty&gt;&gt;8));     <span class="comment">// set the high 8bits of OCR1B</span>
00400     outb(OCR1BL, (pwmDuty&amp;0x00FF)); <span class="comment">// set the low 8bits of OCR1B</span>
00401 }
00402 
<a name="l00403"></a><a class="code" href="group__timer128.html#ga32">00403</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga32">timer1PWMCSet</a>(u16 pwmDuty)
00404 {
00405     <span class="comment">// set PWM (output compare) duty for channel C</span>
00406     <span class="comment">// this PWM output is generated on OC1C pin</span>
00407     <span class="comment">// NOTE:    pwmDuty should be in the range 0-255 for 8bit PWM</span>
00408     <span class="comment">//          pwmDuty should be in the range 0-511 for 9bit PWM</span>
00409     <span class="comment">//          pwmDuty should be in the range 0-1023 for 10bit PWM</span>
00410     outb(OCR1CH, (pwmDuty&gt;&gt;8));     <span class="comment">// set the high 8bits of OCR1C</span>
00411     outb(OCR1CL, (pwmDuty&amp;0x00FF)); <span class="comment">// set the low 8bits of OCR1C</span>
00412 }
00413 
00414 
<a name="l00415"></a><a class="code" href="group__timer128.html#ga33">00415</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga33">timer3PWMInit</a>(u08 bitRes)
00416 {
00417     <span class="comment">// configures timer1 for use with PWM output</span>
00418     <span class="comment">// on pins OC3A, OC3B, and OC3C</span>
00419 
00420     <span class="comment">// enable Timer3 as 8,9,10bit PWM</span>
00421     <span class="keywordflow">if</span>(bitRes == 9)
00422     {   <span class="comment">// 9bit mode</span>
00423         sbi(TCCR3A,WGMA1);
00424         cbi(TCCR3A,WGMA0);
00425     }
00426     <span class="keywordflow">else</span> <span class="keywordflow">if</span>( bitRes == 10 )
00427     {   <span class="comment">// 10bit mode</span>
00428         sbi(TCCR3A,WGMA1);
00429         sbi(TCCR3A,WGMA0);
00430     }
00431     <span class="keywordflow">else</span>
00432     {   <span class="comment">// default 8bit mode</span>
00433         cbi(TCCR3A,WGMA1);
00434         sbi(TCCR3A,WGMA0);
00435     }
00436 
00437     <span class="comment">// set clear-timer-on-compare-match</span>
00438     <span class="comment">//cbi(TCCR3B,CTC1);</span>
00439     <span class="comment">// clear output compare value A</span>
00440     outb(OCR3AH, 0);
00441     outb(OCR3AL, 0);
00442     <span class="comment">// clear output compare value B</span>
00443     outb(OCR3BH, 0);
00444     outb(OCR3BL, 0);
00445     <span class="comment">// clear output compare value B</span>
00446     outb(OCR3CH, 0);
00447     outb(OCR3CL, 0);
00448 }
00449 
<a name="l00450"></a><a class="code" href="group__timer128.html#ga34">00450</a> <span class="keywordtype">void</span> <a class="code" href="group__timer128.html#ga34">timer3PWMInitICR</a>(u16 topcount)
00451 {
00452     <span class="comment">// set PWM mode with ICR top-count</span>
00453     cbi(TCCR3A,WGM30);
00454     sbi(TCCR3A,WGM31);
00455     sbi(TCCR3B,WGM32);
00456     sbi(TCCR3B,WGM33);
00457     
00458     <span class="comment">// set top count value</span>
00459     ICR3H = (u08)(topcount&gt;&gt;8);
00460     ICR3L = (u08)topcount;
00461