OK so I'm playing with arduino's.
I'm trying to write a program that uses multiple tabs, I'm sure this is a noob issue however how do I make a variable valid in all tabs, if I define a variable in one tab and try and use it in another I get the same old error message.
Should I put all the variable definitions in a .h file?
Edit: I think I sussed it, I need to define the variable as a global in the tab where its function resides, and all other tabs I need to declare it as a unitialized variable using 'external' beforehand, I love arduino ide, and google.
I'm trying to write a program that uses multiple tabs, I'm sure this is a noob issue however how do I make a variable valid in all tabs, if I define a variable in one tab and try and use it in another I get the same old error message.
Should I put all the variable definitions in a .h file?
Edit: I think I sussed it, I need to define the variable as a global in the tab where its function resides, and all other tabs I need to declare it as a unitialized variable using 'external' beforehand, I love arduino ide, and google.
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