http://forums.leaflabs.com/topic.php?id=1506 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:08:50 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1506#post-9908 Mon, 26 Mar 2012 16:20:19 +0000 manitou 9908@http://forums.leaflabs.com/ <p>Well, to match up with Arduino shiftin/out API, here is shiftIn() that could be added to wirish_shift.cpp. One might also update io.h</p> <pre><code>uint8 shiftIn(uint8 dataPin, uint8 clockPin, uint8 bitOrder) { uint8 value = 0; uint8 i; for (i = 0; i &lt; 8; ++i) { digitalWrite(clockPin, HIGH); if (bitOrder == LSBFIRST) value |= digitalRead(dataPin) &lt;&lt; i; else value |= digitalRead(dataPin) &lt;&lt; (7 - i); digitalWrite(clockPin, LOW); } return value; }</code></pre>