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POXcode to develop for the Arduino
 

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  1. POXcode to develop for the Arduino
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    <p>Please read this well to make sure you understand what I want to do.</p> <ul> <li>I DO want Xcode to be able to compile, but only so I can debug in Xcode.</li> <li>I do NOT want to use Xcode to compile or upload the code to the Arduino board. I will use the Arduino IDE in "Use external editor" mode instead.</li> </ul> <p>What I have done (also as a future reference for people who might want to do the same thing):</p> <ul> <li>In the project settings (click on the project file in the left pane)</li> <li>I have changed the compiler to GCC to avoid many errors.</li> <li><p>I have added the following paths to the Header Search Paths and Library Search Paths:</p> <ul> <li>/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/lib/gcc/avr/4.3.2/include</li> <li>/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/avr/include</li> <li>/Applications/Arduino.app/Contents/Resources/Java/hardware/arduino/cores/arduino</li> </ul></li> </ul> <p>(If you have installed Arduino.app somewhere other than the Applications folder, you will need to adjust the paths accordingly.)</p> <p>In main.cpp, I have included <code>&lt;WProgram.h&gt;</code>, but it wasn't enough. I was getting undefined identifier errors (for SPCR, SPE, MSTR, SPR1, SPR0) due to not being able to pass the <code>-mmcu=somechipname</code> as a flag to the compiler, which caused no device to be defined and <code>avr/io.h</code> to be unable to include the file that defined those symbols. I got around it by manually including <code>&lt;avr/iom328p.h&gt;</code> which is the appropriate header file for my chip.</p> <p>That's how far I got.</p> <p>Now I get these errors:</p> <pre><code>Undefined symbols for architecture i386: "_init", referenced from: _main in main.o "_setup", referenced from: _main in main.o "_loop", referenced from: _main in main.o "_pinMode", referenced from: SBSetup() in main.o "_digitalWrite", referenced from: SBSetup() in main.o </code></pre> <p>The whole main.cpp including the evil offending code is this:</p> <pre><code>#include &lt;WProgram.h&gt; #include &lt;avr/iom328p.h&gt; // Getting around warning "device type not defined" #define NumLEDs 25 #define clockpin 13 // CI #define enablepin 10 // EI #define latchpin 9 // LI #define datapin 11 // DI int LEDChannels[NumLEDs][3] = {0}; int SB_CommandMode; int SB_RedCommand; int SB_GreenCommand; int SB_BlueCommand; void SBSetup(void) { pinMode(datapin, OUTPUT); pinMode(latchpin, OUTPUT); pinMode(enablepin, OUTPUT); pinMode(clockpin, OUTPUT); SPCR = (1&lt;&lt;SPE)|(1&lt;&lt;MSTR)|(0&lt;&lt;SPR1)|(0&lt;&lt;SPR0); digitalWrite(latchpin, LOW); digitalWrite(enablepin, LOW); } int main(void) { init(); setup(); for (;;) loop(); return 0; } </code></pre> <p>What do I about this?</p>
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    1. COActually, someone just made me realize that the errors happen at linking time. So the code does compile, which is what I wanted for debug purposes. I'll leave this open anyway, since I can't self-answer the question until 8 hours from now and because it would be even better if those errors were gone.
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