https://wiki.pessinurmi.com/index.php?action=history&feed=atom&title=L%C3%A4hettimen_l%C3%A4hdekoodi_v1 2026-06-06T10:49:57Z Revision history for this page on the wiki MediaWiki 1.45.3 https://wiki.pessinurmi.com/index.php?title=L%C3%A4hettimen_l%C3%A4hdekoodi_v1&diff=758&oldid=prev 2025-10-03T14:35:39Z

<p>Created page with &quot;Lähettimen lähdekoodi V1&lt;syntaxhighlight lang=&quot;c#&quot;&gt; #include &lt;RH_ASK.h&gt; #include &lt;SPI.h&gt; RH_ASK driver(1000); #define TX_PIN 12 #define DIP1 2 #define DIP2 3 #define DIP3 4 #define DIP4 5 byte crc8_dallas(const String &amp;data) { byte crc = 0x00; for (int i = 0; i &lt; data.length(); i++) { crc ^= data[i]; for (int j = 0; j &lt; 8; j++) { crc = (crc &amp; 0x80) ? (crc &lt;&lt; 1) ^ 0x31 : (crc &lt;&lt; 1); } } return crc; } void setup() { driver.init(); pinMod...&quot;</p> <p><b>New page</b></p><div>Lähettimen lähdekoodi V1&lt;syntaxhighlight lang=&quot;c#&quot;&gt;<br /> #include &lt;RH_ASK.h&gt;<br /> #include &lt;SPI.h&gt;<br /> <br /> RH_ASK driver(1000);<br /> #define TX_PIN 12<br /> <br /> #define DIP1 2<br /> #define DIP2 3<br /> #define DIP3 4<br /> #define DIP4 5<br /> <br /> byte crc8_dallas(const String &amp;data) {<br /> byte crc = 0x00;<br /> for (int i = 0; i &lt; data.length(); i++) {<br /> crc ^= data[i];<br /> for (int j = 0; j &lt; 8; j++) {<br /> crc = (crc &amp; 0x80) ? (crc &lt;&lt; 1) ^ 0x31 : (crc &lt;&lt; 1);<br /> }<br /> }<br /> return crc;<br /> }<br /> <br /> void setup() {<br /> driver.init();<br /> pinMode(DIP1, INPUT_PULLUP);<br /> pinMode(DIP2, INPUT_PULLUP);<br /> pinMode(DIP3, INPUT_PULLUP);<br /> pinMode(DIP4, INPUT_PULLUP);<br /> pinMode(TX_PIN, OUTPUT);<br /> randomSeed(analogRead(0));<br /> }<br /> <br /> String readDipCode() {<br /> String code = &quot;&quot;;<br /> code += (digitalRead(DIP1) == LOW) ? &#039;1&#039; : &#039;0&#039;;<br /> code += (digitalRead(DIP2) == LOW) ? &#039;1&#039; : &#039;0&#039;;<br /> code += (digitalRead(DIP3) == LOW) ? &#039;1&#039; : &#039;0&#039;;<br /> code += (digitalRead(DIP4) == LOW) ? &#039;1&#039; : &#039;0&#039;;<br /> return code;<br /> }<br /> <br /> void loop() {<br /> String code = readDipCode();<br /> String core = &quot;S&quot; + code + &quot;E&quot;;<br /> byte crc = crc8_dallas(core);<br /> String message = core + String(crc, HEX);<br /> <br /> driver.send((uint8_t*)message.c_str(), message.length());<br /> driver.waitPacketSent();<br /> <br /> delay(random(800, 1800)); // satunnainen lähetysväli<br /> }<br /> &lt;/syntaxhighlight&gt;</div>

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