http://forums.leaflabs.com/topic.php?id=1379 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:24:53 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=1379#post-8328 Thu, 23 Feb 2012 16:26:25 +0000 ModMob 8328@http://forums.leaflabs.com/ <p>Okay, I found my problem...I just need a small delay each time I clear the command:</p> <p>clearCommand(InputCommand);<br /> delay(5);</p> <p>Sorry I didn't wait to post, but I've been at this for days. </p> http://forums.leaflabs.com/topic.php?id=1379#post-8326 Thu, 23 Feb 2012 15:37:44 +0000 ModMob 8326@http://forums.leaflabs.com/ <p>I’m pretty new to this stuff, so I assume I’ve made a mistake somewhere. Using Processing I’m sending game controller inputs to the Maple via XBee S1 transceivers. I have a simple protocol that uses ‘$’ as begin of command and ‘Z’ as end of command.</p> <p>For testing I’m mapping the received input to a PWM output for an LED. The LED brightness changes erratically to input changes, making me think I’m not reading all the bytes in the command.</p> <p>Here’s what I send from the PC in Processing:<br /> XBeePort.write("$"+(int)lUpDown+"Z");<br /> Where, lUpDown ranges from 0 to 510.</p> <p>Here’s the Maple code:<br /> '#include &lt;stdlib.h&gt;<br /> char commandBegin = '$';<br /> char commandEnd = 'Z';<br /> char InputCommand[100];<br /> int maxIn = 510;<br /> int minIn = 0;<br /> char currentChar = ' ';</p> <p>void setup() {<br /> Serial1.begin(9600);<br /> delay(500);<br /> Serial1.flush();<br /> pinMode(0, PWM);<br /> }</p> <p>void loop() {<br /> while (Serial1.available()&gt;0){<br /> currentChar = Serial1.read();<br /> if(currentChar == commandBegin){<br /> clearCommand(InputCommand); </p> <p> int i = 0;<br /> while(currentChar != commandEnd){<br /> currentChar = Serial1.read();<br /> delay(50);<br /> InputCommand[i] = currentChar;<br /> i++;<br /> }<br /> }<br /> if (currentChar == commandEnd){<br /> handleCommand(InputCommand);<br /> clearCommand(InputCommand);<br /> }<br /> }<br /> }<br /> void handleCommand(char InputCommand[]){<br /> int pwmValue=map(atoi(InputCommand),minIn,maxIn,0,65535);<br /> pwmWrite(0,pwmValue);<br /> }</p> <p>void clearCommand(char InputCommand[]){<br /> int commandSize = sizeof(InputCommand);<br /> for (int i = 0; i &lt; commandSize - 1; i++) {<br /> InputCommand[i]=' ';<br /> }<br /> } '</p> <p>Can anyone suggest why I might not be reading all of the command bytes?<br /> Thanks </p>