Hi All.

I have installed a library called "TimerOne". I have installed it using the Visual Micro Explore in Visual Studio, by navigating to Manage Libraries.

When using the example that comes with this library, I'm getting an error saying the Timer-class does not have the member I'm trying to use.
I did include the header, and the library can be seen under the Installed Libraries.
Other code (eg. flash an LED) works fine).

When using the same example in Arduino IDE, it compiles and runs without any issues.

See attached image.

Arduino IDE Version: 1.6.5
Visual Studio 2015
Board: Arduino Mega 2560.

What can cause this?

Thanks for your reply!

You are correct, the only problem seems to be with Intellisense.
I found this KB about the problem:
http://www.visualmicro.com/post/2010/04/11/How-to-enable-arduino-Intellisense-in...

But I don't see any .ncb file in the project folder?

When clicking F12 on a red line:
Error: "A definition for the symbol 'initialize' could not be located.

When clicking F12 on Timer1 (right before the red line):
Path to header file: "c:\Users\Julle\Documents\Arduino\libraries\TimerOne\TimerOne.h"

That seems to be okay?

Hi again.

It does contain a public member called initialize, but the definition is kind of grey... Not sure what that means.
It's a library that can be installed using the Visual Micro Explorer, it's called TimerOne.

Thanks, that worked. I added #define __AVR__ before the header inclusion.

I'm not really sure what that means
I can see in the header, that the library has two defines:
1) __AVR__
2) __arm__

I'm assuming it's because the code can be used on both Arduino and Arm targets? Is the AVR a normal name for Arduino?

Yes all 8 bit Atmel processors are AVR and all Arduino 8 bit boards use Atmel processors

As you know both the arduino ide and visual micro compile correctly which requires the defines. This means the underlying toolchain is automatically discovering them during compile. Neither the arduino ide or visual micro have any access to this process we both use the toolchain files produced by the chip manufacturer, in this case atmel. This happens in background.

The problem is that for intellisense purposes we don't run the compile, we have to work things out in a different way. This is why both ide's compile okay and you do not see any intellisense errors in arduino because it doesn't have intellisense.

I expect Visual Micro will shortly be capable of deeper intelligence. The changes arduino are making for the next release, 1.6.6 includes new/better capability to discover #defines and #includes. Over the next few weeks I will be adding this new system to Visual Micro. It improves compilation of libraries that share different platforms this is why arduino have been working on the new system. They want to support other non-avr architectures. This split between avr and arm is very new because until recently arduino did not have any 32 bit boards (arm). Therefore these changes by librariy authors such as "timer" are new and not historically an issue.

I looked into this and have added __AVR__ or __ARM__ to the default intellisense. Regardless of the new 1.6.6 stuff it made sense to add these defaults for all Arduino versions.

Thanks again for the report.