Background...
First off, I will say that I am new to Visual Micro and just setup our environment, so the issue I am reporting is likely our environment's setup.  I have tried the basics like re-installation of the Arduino IDE and Visual Micro VSIX, with no improvement, so I am looking for advice on how to get a functioning Visual Micro environment.  My organization found the Visual Micro value propositions (Intellisense, basic debugging, and better code navigation) appealing and purchased Visual Micro for commercial use in porting some libraries to AVR; the Arduino IDE is painful after using Visual Studio for years.

I have a benchmark project provided by the Microsoft Azure team that works perfectly when built with Arduino 1.6.12.  The test target device is a Adafruit Feather M0, which we have successfully deployed simple "hello world, blinky" type applications to.

Issue...
Open the INO file and to start off, a handful of known defined symbols are Intellisense detected as "undefined".  Build generates about a dozen errors, all in the VM_DBG.h file, which looks to have been injected into my project to support your debugging feature. 

Thanks in advance for suggestions,
Greg

Changed target configuration to "Release", build failed on 1 missing library (vs. 14 line syntax errors previously).  Moved project folder from my Github folder structure to my Arduino folder.  Release builds without error now.  I uploaded the build results to the development board successfully and it executes the code correctly.

Debug build produces the following errors...

Compiling debug version of 'remote_monitoring' for 'Adafruit Feather M0 (Native USB Port)'
 
remote_monitoring.c:7: In file included from
 
VM_DBG.h: 88:1: error: unknown type name 'class
   class VisualMicroDebug
 
VM_DBG.h: 89:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
 
VM_DBG.h: 352:2: error: unknown type name 'VisualMicroDebug
   extern VisualMicroDebug MicroDebug
 
VM_DBG.h: 359:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   template<typename T>
 
VM_DBG.h: 373:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   template<typename T>
 
VM_DBG.h: 379:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   template<typename T>
 
VM_DBG.h: 403:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   template<typename T>
Error compiling project sources




Thank you for the quick response, I look forward to future suggestions.
Greg

Sorry for the delay... I thought I posted the result of the detailed build back on Oct 5th.  But, apparently I didn't.

I have sent the verbose output from the Debug build to this posting separately (too large to attach).

l.txt

Thanks,
Greg

I am pretty sure I don't have any breakpoints... I don't find any indicators in the left margin, further Debug has "Delete All Breakpoints" grayed out (aka disabled).   

Just to test that there were no orphan breakpoints I set one, then invoked Debug|Delete All Breakpoints, verified the left-margin breakpoint indicator had been removed, then performed a Debug build.  Got the same errors in VM_DBG.h.

I can zip up the full project directory, nothing proprietary, and send it you if you would like.

Thanks,
Greg 

Sent build folder and project source folder zips moments ago.

the .ino starts with some comments then a set of #includes.


// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

// Use Arduino IDE 1.6.8 or later.


#include "Adafruit_FeatherOLED_WiFi.h"
#include <Adafruit_BME280.h>
#include <iot_logging.h>
#include <AzureIoTHubClient.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <time.h>

Thanks,
Greg

I think I may have discovered a potential source of the issue while working on extending the code interfacing with AzureIoTHub and accessing basic C++ library functions from within code sections in the remote_monitoring.c file.  The bulk of the work in the solution is being performed in remote_monitoring.c, this is definitely C and not C++ code, further the Azure library supplied by Microsoft is ANSI C.

"The Azure IoT device SDK for C is written in ANSI C (C99) to maximize portability. This makes it well-suited to operate on a number of platforms and devices, especially where minimizing disk and memory footprint is a priority."  from Introducing the Azure IoT device SDK for C on the Microsoft Azure site.

Does Visual Micro support mixed C, C++ projects?

Installed...
Adafruit BME280
RTCZero
AzureIoTHub
Adafruit WINC1500

Yes it builds in Arduino IDE.  I builds in Visual Micro, if Solution Configuration is set to Release (that is how I am working now).

Only if Debug is selected, does the build fail.

Thanks,
Greg

Thank you for your assistance Tim.  Not urgent, I have work-arounds.

Updated Visual Micro this morning... 1610.4.2