http://wiki.sps-pi.cz/index.php?action=history&feed=atom&title=Arduino_-_74HC595_2 2026-05-16T07:14:20Z Historie editací této stránky MediaWiki 1.42.1 http://wiki.sps-pi.cz/index.php?title=Arduino_-_74HC595_2&diff=14913&oldid=prev 2012-12-15T18:33:31Z

<p>Založena nová stránka: &lt;source lang&quot;C&quot;&gt; <span dir="auto"><span class="autocomment">Using 2 7-segment displays with the 74HC595 shift registers CC by-sa-nc 3.0 http://tronixstuff.wordpress.com: </span> int latchpin = 8; // connect to pin...</span></p> <p><b>Nová stránka</b></p><div>&lt;source lang&quot;C&quot;&gt;<br /> <br /> /*<br /> Using 2 7-segment displays with the 74HC595 shift registers<br /> CC by-sa-nc 3.0<br /> http://tronixstuff.wordpress.com<br /> */<br /> int latchpin = 8; // connect to pin 12 on the &#039;595<br /> int clockpin = 12; // connect to pin 11 on the &#039;595<br /> int datapin = 11; // connect to pin 14 on the &#039;595<br /> float b = 0;<br /> int c = 0;<br /> float d = 0;<br /> int e = 0;<br /> int speed = 300; // used to control speed of counting<br /> int segdisp[10] = {<br /> 3,159,37,13,153,73,65,27,1,9 };<br /> void setup()<br /> {<br /> pinMode(latchpin, OUTPUT);<br /> pinMode(clockpin, OUTPUT);<br /> pinMode(datapin, OUTPUT);<br /> }<br /> void loop()<br /> {<br /> // Count up<br /> for (int z=0; z&lt;100; z++)<br /> {<br /> digitalWrite(latchpin, LOW);<br /> shiftOut(datapin, clockpin, LSBFIRST, 0); // clears the right display<br /> shiftOut(datapin, clockpin, LSBFIRST, 0); // clears the left display<br /> digitalWrite(latchpin, HIGH);<br /> if (z&lt;10)<br /> {<br /> digitalWrite(latchpin, LOW);<br /> shiftOut(datapin, clockpin, LSBFIRST, segdisp[z]); // sends the digit down the serial path<br /> shiftOut(datapin, clockpin, LSBFIRST, 255); // sends a blank down the serial path to push the digit to the right<br /> digitalWrite(latchpin, HIGH);<br /> }<br /> else if (z&gt;=10)<br /> {<br /> d=z%10; // find the remainder of dividing z by 10, this will be the right-hand digit<br /> c=int(d); // make it an integer, c is the right hand digit<br /> b=z/10; // divide z by 10 - the whole number value will be the left-hand digit<br /> e = int(b); // e is the left hand digit<br /> digitalWrite(latchpin, LOW); // send the digits down to the shift registers!<br /> shiftOut(datapin, clockpin, LSBFIRST, segdisp[c]); <br /> shiftOut(datapin, clockpin, LSBFIRST, segdisp[e]); <br /> digitalWrite(latchpin, HIGH);<br /> }<br /> delay(speed);<br /> }<br /> delay(2000);<br /> // Count down<br /> for (int z=99; z&gt;=0; z--)<br /> {<br /> digitalWrite(latchpin, LOW);<br /> shiftOut(datapin, clockpin, LSBFIRST, 0); // clears the right display<br /> shiftOut(datapin, clockpin, LSBFIRST, 0); // clears the left display<br /> digitalWrite(latchpin, HIGH);<br /> if (z&lt;10)<br /> {<br /> digitalWrite(latchpin, LOW);<br /> shiftOut(datapin, clockpin, LSBFIRST, segdisp[z]); // sends the digit down the serial path<br /> shiftOut(datapin, clockpin, LSBFIRST, 255); // sends a blank down the serial path to push the digit to the right<br /> digitalWrite(latchpin, HIGH);<br /> }<br /> else if (z&gt;=10)<br /> {<br /> d=z%10; // find the remainder of dividing z by 10, this will be the right-hand digit<br /> c=int(d); // make it an integer, c is the right hand digit<br /> b=z/10; // divide z by 10 - the whole number value will be the left-hand digit<br /> e = int(b); // e is the left hand digit<br /> digitalWrite(latchpin, LOW); // send the digits down to the shift registers!<br /> shiftOut(datapin, clockpin, LSBFIRST, segdisp[c]); <br /> shiftOut(datapin, clockpin, LSBFIRST, segdisp[e]); <br /> digitalWrite(latchpin, HIGH);<br /> }<br /> delay(speed);<br /> }<br /> <br /> delay(2000);<br /> }</div>

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