Generator melodije

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=80 BGCOLOR="#777777" TEXT="#080000" bgproperties="fixed" background="5f200500enpprp.gif"> <div> <A HREF="index.htm" TARGET="_top" TITLE="SPER Servis profesionalne elektronike Ra"><U><B>home</B></U></A><B>     |     </B><FONT SIZE="4" COLOR="#FFCC66" FACE="Trebuchet MS" ><B>SPER Servis profesionalne elektronike Rajak</B></FONT></div> <div> <A HREF="realizirani_uredaji.htm" TARGET="_top" TITLE="Realizirani uredaji"><U><B>Realizirani uredaji</B></U></A></div> <bR> <div> </div> </td> </tr><tr> <td valign="top" width=210 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> Generator melodije</div> <bR> <div> <B><IMG SRC="097a3260.gif" border=0 width="163" height="38" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> <div>         </div> <bR> <div> <A HREF="realizirani_uredaji.htm" TARGET="_top" TITLE="Realizirani uredaji"><U><B>go back</B></U></A></div> <div style="text-align:CENTER; "><FONT SIZE="2" COLOR="#000000" FACE="Trebuchet MS">  <form method="get" action="http://www.google.hr/custom" target="google_window"> <table border="0" bgcolor="#99cc99"> <tr><td nowrap="nowrap" valign="top" align="left" height="32"> <bR> <br/> <input type="hidden" name="domains" value="www.sper.hr"></input> <label for="sbi" style="display: none">Unesite Vaše uvjete za pretraivanje</label> <input type="text" name="q" size="20" maxlength="255" value="" id="sbi"></input> </td></tr> <tr> <td nowrap="nowrap"> <table> <tr> <td> <input type="radio" name="sitesearch" value="" id="ss0"></input> <label for="ss0" title="Pretrai Web"><font size="-1" color="black">Web</font></label></td> <td> <input type="radio" name="sitesearch" value="www.sper.hr" checked id="ss1"></input> <label for="ss1" title="Trai www.sper.hr"><font size="-1" color="black">www.sper.hr</font></label></td> </tr> </table> <label for="sbb" style="display: none">Pošaljite obrazac za pretraivanje</label> <input type="submit" name="sa" value="Google pretraga" id="sbb"></input> <input type="hidden" name="client" value="pub-2650537455752702"></input> <input type="hidden" name="forid" value="1"></input> <input type="hidden" name="ie" value="ISO-8859-2"></input> <input type="hidden" name="oe" value="ISO-8859-2"></input> <input type="hidden" name="cof" value="GALT:#800080;GL:1;DIV:#37352E;VLC:99C9FF;AH:center;BGC:FFFFFF;LBGC:CAF99B;ALC:CC0000;LC:CC0000;T:44423A;GFNT:0066CC;GIMP:0066CC;LH:38;LW:163;L:http://www.sper.hr/logo.gif;S:http://;FORID:1"></input> <input type="hidden" name="hl" value="hr"></input> </td></tr></table> </form>  </FONT></div> <bR> <script type="text/javascript"> </script> <script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> </script> <bR> <div> <B> <img src="/cgi-sys/Count.cgi?df=sperR41.dat|display=Counter|ft=6|md=6|frgb=100;139;216|dd=A|sh=F">  </B></div> </td> <td valign="top" height=400 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <B>     </B><B>Zvono koje svira melodiju sa mikrokontrolerom</B></div> <bR> <div>      Primjenom ove jednostavne sheme za generiranje melodije možemo lako napraviti zanimljivo zvono. Ograničenje sklopa je u generiranju isključivo pravokutnog signala. Osim toga, mala memorija procesora zahtijeva kompresiju zapisane melodije.</div> <bR> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-2650537455752702" data-ad-slot="7117608876"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <bR> <bR> <div> <IMG SRC="5503b170.gif" border=0 width="571" height="279" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> <bR> <div> <FONT SIZE="3" COLOR="#000000" FACE="Trebuchet MS" >     </FONT>Kao primjer navodimo 1,25 sekundi melodije zapisane u 96 bajtova (<A HREF="tada.zip" TARGET="_top" TITLE="tada.zip"><U>ta-na-na-na</U></A>). Jedinica trajanja impulsa i perioda je 22,5us. Procesor čita tablicu. Pokreće brojače perioda, impulsa i ciklusa. Uključi pin P3.7.Svake 22,5us smanjuje brojač impulsa i perioda. Kad isprazni brojač impulsa isključi pin P3.7. Zatim odbrojava do kraja perioda, smanji brojač ciklusa i ako nije gotov ponavlja generiranje peroda dok ne izgenerira sve ciklus. Nakon toga čita parametre slijedećeg impulsa, perioda i ciklusa te ih na isti način izvršava.</div> <bR> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="294" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 37 ><NOBR><div> Impuls</div> <div> (*22,5us)</div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> Period</div> <div> (*22,5us)</div> </NOBR></tD> <tD VALIGN=CENTER><NOBR><div> Ciklusa ponavljanja</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 24</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 55</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 6</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 24</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 56</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 24</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 57</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 24</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 114</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 26</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 52</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 5</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 26</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 54</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 26</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 54</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 26</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 109</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 29</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 46</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 5</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 29</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 47</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 29</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 48</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 29</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 95</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 32</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 42</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 5</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 32</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 43</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 32</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 42</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 32</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 86</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 36</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 36</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 5</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 36</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 38</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 36</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 38</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 2</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 36</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 77</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 38</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 34</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 6</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 38</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 36</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 38</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 36</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 38</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 73</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 43</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 30</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 6</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 43</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 30</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 43</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 35</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 43</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 64</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 8</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 48</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 27</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 6</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 48</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 30</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 4</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 48</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 27</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 20 WIDTH="64"><div> 3</div> </tD> <tD VALIGN=TOP WIDTH="71"><div> 48</div> </tD> <tD VALIGN=TOP WIDTH="133"><div> 57</div> </tD> </tR> </TABLE></div> <bR> <div>      Vještiji programeri lako mogu napraviti i: zavijajuću sirenu, ninu-ninu sirenu, melodiju sretan rođendan, melodiju kazačok, melodiju zvončići, melodiju sa vjenčanja itd.. Kao izvor napajanja se može koristiti transformator 9VAC sa punovalnim ispravljačem.</div> <bR> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>  <ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-2650537455752702" data-ad-slot="7117608876"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <bR> <div>      Karakteristike:</div> <bR> <div> <IMG BORDER="0" SRC="Symb075c00b700dc00000000.gif" HEIGHT="15" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Napajanje: 8-12V=</div> <div> <IMG BORDER="0" SRC="Symb075c00b700dc00000000.gif" HEIGHT="15" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Potrošnja mikrokontrolera i stabilizatora napajanja: cca 10mA</div> <div> <IMG BORDER="0" SRC="Symb075c00b700dc00000000.gif" HEIGHT="15" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Izlaz: zvučnik 4R/3W ili 8R/2W</div> <bR> <div> Zainteresirani mogu dobiti besplatno program i listing programa.</div> <bR> <div>      Za vlastite potrebe realizirali smo proširenu verziju kućnog zvona. Problem je bio u slijedećem. Postojeće zvonce se preko tastera napajalo sa 220VAC. Trebalo je dodati još jedan taster ne mijenjajući postojeću 220VAC instalaciju. Ovisno o pritisnutom tasteru zvono je trebalo svirati odgovarajuću melodiju. Rješenje je bilo u korištenju malog switching napajanja. Kako switching napajanje ima u sebi punovalni ispravljač nema problema ako se napaja samo negativnim ili pozitivnim poluvalom. Svaki taster uključuje 220VAC napajanje, ali preko svoje diode propušta samo jedan polaritet poluvala. Za melodiju broj 1 zvono se napaja pozitivnim poluvalom, a za melodiju broj 2 sa negativnim poluvalom. Preko otpornika i dva optocouplera procesor dobiva informaciju o prisutnosti određenog poluvala. Na osnovu toga pokreće generiranje odgovarajuće melodije. Osim toga, monitorira pritisnutost tastera te kod odpuštanja tastera prekida melodiju.</div> <bR> <bR> </td> </tr></table></body>