I have just re-installed VS and am using the latest version of vm downloaded today. I have a sea of red intellisense errors throughout my project although the project still compiles as it always did.

On investigation, I believe there may be a problem in the vm maintained file called .ESP.vsarduino.h. Here are a few lines in the problem area...

#undef F
#define F(string_literal) ((const PROGMEM char *)(string_literal))
#undef PSTR
#define PSTR(string_literal) ((const PROGMEM char *)(string_literal))")#include <ESP.ino>
#include <Command.ino>
 

If I edit the file so that it reads

#undef F
#define F(string_literal) ((const PROGMEM char *)(string_literal))
#undef PSTR
#define PSTR(string_literal) ((const PROGMEM char *)(string_literal))
#include <ESP.ino>
#include <Command.ino> 

then all the intellisense errors disappear. 

Unfortunately my correction to the .h file is overwritten and the error returns after compiling..

Am I doing something wrong here - or are you?

Thanks

Neil

VS2015, Arduino 1.6, Core 2.2, Generic ESP8266 Module

Thanks - much better but still not quite right.

The offending lines now read :

#undef F
#define F(string_literal) ((const PROGMEM char *)(string_literal))
#undef PSTR
#define PSTR(string_literal) ((const PROGMEM char *)(string_literal))")

#include <ESP.ino>
#include <Command.ino> 

and this still gives intellisense errors in PSTR calls.

Thanks

Neil

Excellent - looks good now.

Thanks for the quick fix

Neil