http://forums.leaflabs.com/topic.php?id=611 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:12:08 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=611#post-3368 Fri, 14 Jan 2011 10:32:32 +0000 Darth Maker 3368@http://forums.leaflabs.com/ <p>Poslathian, I'll refer you too this thread:<br /> <a HREF="http://forums.leaflabs.com/topic.php?id=583">http://forums.leaflabs.com/topic.php?id=583</a><br /> I removed just the main() function from the main.cxx file, and I can then write my own. init(); is still called, but setup() (and loop()) is not a required function.</p> <p>Thank you for your help MessiahAndrw, adding that code indeed worked. (Minus the extra capital "s".) Actually, the line that made it work is the first one:</p> <p>Timer4.setChannel4Mode(TIMER_PWM);</p> <p>I'm going to take a look at the hardware files for the PWM functions and see if I can find the reason PWM24 didn't work but the others did. </p> http://forums.leaflabs.com/topic.php?id=611#post-3366 Fri, 14 Jan 2011 07:04:47 +0000 poslathian 3366@http://forums.leaflabs.com/ <p>were you running from inside the IDE? main is already defined for you in the background when using the ide...it looks something like (much as you might expect):<br /> // Force init to be called *first*, i.e. before static object allocation.<br /> // Otherwise, statically allocated object that need libmaple may fail.<br /> __attribute__(( constructor )) void premain() {<br /> init();<br /> }</p> <p>int main(void)<br /> {<br /> setup();</p> <p> while (1) {<br /> loop();<br /> }<br /> return 0;<br /> }</p> <p>so you probably would have gotten a compiler error for the redefinition, so I suppose youre using libmaple from the command line...?</p> <p>also that other junk in main and premain, setup() and init() are important! stuff wont work without it. </p> <p>whats your setup like? </p> http://forums.leaflabs.com/topic.php?id=611#post-3364 Fri, 14 Jan 2011 02:24:17 +0000 MessiahAndrw 3364@http://forums.leaflabs.com/ <p>Perhaps you've change or disabled timer 4 that PWM pin 24 is associated with? If not you, maybe the bootloader has?</p> <p>Try calling before the rest of your code:<br /> <code>Timer4.setChannel4Mode(TIMER_PWM);<br /> Timer4.setOverflow(65535);<br /> Timer4.setPreScaleFactor(1);<br /> Timer4.resume();</code></p> <p>If it works then I suspect timer 4 is used for something in the bootloader. </p> http://forums.leaflabs.com/topic.php?id=611#post-3363 Fri, 14 Jan 2011 00:16:04 +0000 Darth Maker 3363@http://forums.leaflabs.com/ <p>I didn't actually use setup() and loop(), and I didn't test it using those, but this will work the same as the code that I used. I just had main() (and thus no setup() and loop(),) and that was the only difference. </p> http://forums.leaflabs.com/topic.php?id=611#post-3352 Wed, 12 Jan 2011 23:41:33 +0000 Darth Maker 3352@http://forums.leaflabs.com/ <p>Can someone try this code? For some reason, pin 24 wont output PWM for me.</p> <p>void setup()<br /> {</p> <p> pinMode(5, PWM);<br /> pinMode(9, PWM);<br /> pinMode(14, PWM);<br /> pinMode(24, PWM);</p> <p> analogWrite(5, 0);<br /> analogWrite(9, 0);<br /> analogWrite(14, 0);<br /> analogWrite(24, 0);</p> <p> analogWrite(5, 65535/2);<br /> delay(2000);<br /> analogWrite(5, 0);<br /> delay(1000);<br /> analogWrite(9, 65535/2);<br /> delay(2000);<br /> analogWrite(9, 0);<br /> analogWrite(24, 65535/2);<br /> // digitalWrite(24, HIGH);<br /> delay(2000);<br /> analogWrite(24, 0);<br /> // digitalWrite(24, LOW);<br /> delay(1000);<br /> analogWrite(14, 65535/2);<br /> delay(2000);<br /> analogWrite(14, 0);<br /> toggleLED();</p> <p> while(1);</p> <p>}</p> <p>void loop();</p> <p>I tested the pin with the digitalWrite(), but that worked fine. Is there some firmware problem with PWM24? </p>