VS Arduino - undefined reference newbie error

Apr 23^rd, 2024 at 5:30pm (UTC)

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VS Arduino › Visual Micro › General Board › undefined reference newbie error

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undefined reference newbie error (Read 2750 times)

Abbott HMG Junior Member Offline Posts: 56 Location: Bedford, NY, USA Joined: May 10^th, 2019	undefined reference newbie error Dec 18^th, 2019 at 3:20am	Print Post
	This is probably a real newbie mistake, but I keep getting the following errors on the attached test compile (that does nothing): undefined reference to TimedInterruptsClass::interruptInfos undefined reference to TimedInterruptsClass::infoCount Someone please set me straight Abbott

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Tim@Visual Micro Administrator Offline Posts: 12076 Location: United Kingdom Joined: Apr 10^th, 2010	Re: undefined reference newbie error Reply #1 - Dec 18^th, 2019 at 11:42am	Print Post
	One point of note is that you should rename TimedInterrupts.cpp to something else. When compiling Arduino all of the .ino files in the project are written to a file in a temp folder called projectName.cpp. In your case that will be TimedInterrupts.cpp which will cause issues for you.


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Abbott HMG Junior Member Offline Posts: 56 Location: Bedford, NY, USA Joined: May 10^th, 2019	Re: undefined reference newbie error Reply #2 - Dec 18^th, 2019 at 5:11pm	Print Post
	Thanks The project name and folder are TimedInterruptsTest. I don't understand what I'm doing that causes the compiler to throw those errors. The project it coemes from has 2 classes, most more complex than this and they compile clean. Abbott
	« Last Edit: Dec 18^th, 2019 at 5:13pm by Abbott HMG »

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Tim@Visual Micro Administrator Offline Posts: 12076 Location: United Kingdom Joined: Apr 10^th, 2010	Re: undefined reference newbie error Reply #3 - Dec 18^th, 2019 at 5:24pm	Print Post
	ah sorry didn't see the .ino and project name end with test. Code structure okay so I suggest asking for assistance on the arduino.cc forum. That's the place for code help, that or stackoverflow.


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Abbott HMG Junior Member Offline Posts: 56 Location: Bedford, NY, USA Joined: May 10^th, 2019	Re: undefined reference newbie error Reply #4 - Dec 18^th, 2019 at 6:04pm	Print Post
	Thanks ... will do


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Abbott HMG Junior Member Offline Posts: 56 Location: Bedford, NY, USA Joined: May 10^th, 2019	Re: undefined reference newbie error Reply #5 - Dec 19^th, 2019 at 8:28pm	Print Post
	Thanks. I worked it out myself. I had 2 static variables defined in the header, instead of the .cpp. I new it was a newbie thing. Abbott


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Tim@Visual Micro Administrator Offline Posts: 12076 Location: United Kingdom Joined: Apr 10^th, 2010	Re: undefined reference newbie error Reply #6 - Dec 19^th, 2019 at 8:31pm	Print Post
	Great, thanks for the update.


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