Hi, I am moving from the ESP8266 to the ESP32 so, I updated the Arduino IDE to version 2.3.3 then I updated the Visual Micro to version 2.2024.0926.1 for Visual Studio 2017. I also used the Arduino IDE to install boards and libraries for the ESP32. When I went back to Visual Studio I noticed I had boards for ESP32 but no boards for ESP8266. I figured out how to reinstall the ESP8266 boards but my main issue is described below.

Many identifiers are reported as undefined.

I have rebuilt sample projects using ESP32 and ESP8266 boards.
I have cleaned the solution.
I have reloaded the tool chain and libraries.
I have reloaded Visual Studio.

This issue just started after I did the updates.

Thanks for your help.

Thanks for responding.

I loaded a program that I wanted to convert from ESP8266 to ESP32 and noticed VM went back to Arduino 1.6/1.8 and the ESP8266 board was no longer listed. Solution Explorer does not display (Arduino) next to the project name. Without changing the IDE I went to select the board but it says 0 boards found. Rescan returned 0 boards. I selected the Arduino 2 IDE and VM automatically inserted the correct board. The ino file contains Intellisense errors so I recompiled it and the errors appeared to be gone however the build failed with the following message.

error : Designtime build failed for project 'C:\Users\randy\Documents\Arduino\NodeServer\NodeServer.vcxproj' configuration 'Release|Win32'. IntelliSense might be unavailable.
     Set environment variable TRACEDESIGNTIME = true and restart Visual Studio to investigate.

I ran the TRACEDESIGNTIME=true and located the file and it reports:

Build succeeded.
    0 Warning(s)
    0 Error(s)

When I reloaded the application, it reverted back to IDE 1.6/1.8 and no board selected. I selected Arduino 2 IDE, the board reappeared with Intellisense errors and then I recompiled. The build failed this time with a function called “initSDCard” saying it was not declared in this scope. Items with red squiggles lines include:

#include (most include files)
String
IPAddress
AsyncWebServer
AsyncWebSocket
SD
LittleFS

Back to your original response this project does not have (Arduino) next to the project name, however another test project I created does. 

It has no code except for the setup and loop and 1 variable declared as String myStr =””; and it has the red squiggle line. When the project opened this morning, the IDE selected was Arduino 2 however the board was LOLIN(WEMOS) D1 R2 & mini. When I first created and compiled the project I selected an ESP32 board and the project was saved that way. 

1)      
I click vMicro>New Arduino Project

2)
I opened an older project and selected Convert this project to latest format. (Arduino) appears after the Solution name. I did a build, and it failed with the following message.

HitTest.ino: 285:51: error: 'detectsMovement' was not declared in this scope
   285 |  \*
   |                                                   ^
Error compiling sketch sources
Debug build failed for project 'HitTest'
 
None of the code was altered after the last build before the upgrades. In addition all of the #includes have squiggly lines including most of the identifiers.

I moved the ‘detectMovements’ IRAM_ATTR function above the setup procedure where the function is attached via attachInterrupt.

After rebuilding the build was successful. In the past the interrupt functions could be placed anywhere in the code but apparently not anymore.

3)
I went to the Configure IDE locations and Arduino 1.6/1.8 was selected as default and then I noticed that the location referenced the location of Arduino 2. I removed the location and rebuilt the project, and the squiggly lines were still there. I closed Visual Studio and then reopened it to the same project, and everything appears to be cured even after another build!

An IDE location for Arduino 2 is listed but the text box is disabled. I am assuming this is correct?

I will experiment with other projects tomorrow to see if the issue is fix. As for now it appears to be.

Thanks, Randy

I created a simple test project for IRAM_ATTR as shown in the code below. I tried sending images or attachments which show the squiggles but apparently, it's not allowed.

Code 1: shows the IRAM_ATTR procedure placed after the pin was attached in the preceding setup procedure. The build failed because the IRAM_ATTR was not declared. D1, IRAM_ATTR and movementDetected have squiggles in the code why? 

#include <Arduino.h>

const int movementPin = D1;
int movementCount = 0;

void setup()
{
	pinMode(movementPin, INPUT_PULLUP);
	attachInterrupt(digitalPinToInterrupt(movementPin), movementDetected, CHANGE);
}

void loop()
{

}

void IRAM_ATTR movementDetected() {
	movementCount++;
}
 

Build Result:
IRAM_ATTR_Test.ino: 9:54: error: 'movementDetected' was not declared in this scope
   9 |  attachInterrupt(digitalPinToInterrupt(movementPin), movementDetected, CHANGE)
   |                                                      ^~~~~~~~~~~~~~~~
Error compiling sketch sources
Build failed for project 'IRAM_ATTR_Test'


Code 2: I moved the IRAM_ATTR function above the setup procedure and the build was successful. In Arduino version 1.6/1.8 the IRAM_ATTR procedure could be placed after the attachInterrupt in the setup procedure.  D1, IRAM_ATTR and movementDetected still have squiggles in the code?

#include <Arduino.h>

const int movementPin = D1;
int movementCount = 0;

void IRAM_ATTR movementDetected() {
	movementCount++;
}

void setup()
{
	pinMode(movementPin, INPUT_PULLUP);
	attachInterrupt(digitalPinToInterrupt(movementPin), movementDetected, CHANGE);
}

void loop()
{

}
 

Build Result:
# Copy build result to 'Project>Property Pages>Intermediate Directory'
# Destination: 4/Release/"

   ║   SEGMENT  BYTES    DESCRIPTION
   ╚══ IROM     232036   code in flash


Code 3: Here I added a String and rebuilt the project, and it appears that I am still having issues with Intellisense. String does not show up in the Intellisense popup. D1, IRAM_ATTR, movementDetected and String have squiggles in the code?

#include <Arduino.h>

const int movementPin = D1;
int movementCount = 0;
String myStr = "";

void IRAM_ATTR movementDetected() {
	movementCount++;
}

void setup()
{
	pinMode(movementPin, INPUT_PULLUP);
	attachInterrupt(digitalPinToInterrupt(movementPin), movementDetected, CHANGE);
}

void loop()
{

}
 

Build Result:
# Copy build result to 'Project>Property Pages>Intermediate Directory'
# Destination: 4/Release/"

   Code in flash (default, ICACHE_FLASH_ATTR), used 232644 \ 1048576 bytes (22%)
   ║   SEGMENT  BYTES    DESCRIPTION
   ╚══ IROM     232644   code in flash

Any help would be appreciated because this is quite annoying dealing with Intellisense while writing code.

Thanks, Randy

One more thing I noticed about this issue is that all of the combo boxes above the code window are empty.

I emailed it to you.

If this helps:

In the project that I need to work on where the combo boxes were emptied after a build failed, I did a Rescan Toolchains and Libraries, and the combo boxes repopulated.

Here are some snapshots of the code with squiggles. It's odd because you'll see WiFi on one line with squiggles and the following WiFi line without squiggles. Look at the next image with the break statement. Squiggles like this are common in various places in the code.

Yes, the project I sent has (Arduino) next to the project name.

The issue with the vcxitems was taken care of when I deleted all of the VM files and reopened the project ino through vMicro>Open existing Arduino project.

The real issue here is with IntelliSense as demonstrated in the images from post 12. Any existing project that I open or create new will exhibit the same issue with IntelliSense.

I do not have any issues using the Arduino IDE.

Today I discovered the following:
I removed the Arduino 1.6/1.8 IDE location using VMicro>Configure IDE locations as per instructions in post #3.

Today I was looking through VMicro>Global Options and then selected Application IDE location and found that the Arduino 1.6/1.8 location was still listed and showed up as default. 

I went back to VMicro>Configure IDE locations and the Arduino 1.6/1.8 location was not listed there. 

I then went back to VMicro>Global Options then selected Application IDE location and tried to remove it from there. However, it remained. 

I went back to VMicro>Configure IDE locations and Arduino 1.6/1.8 was re-added after attempting to remove it from the global options.

Is this normal?

Perhaps my only solution is to uninstall vMicro and reinstall it. What do you think?

I can't keep wasting time on this issue I have to get back to work.

I opted for removing vMicro and did a repair to Visual Studio 2017. I also removed Arduino 1.6/1.8. I rebuilt my ino code using the Arduino 2 IDE. All the board and all the libraries are there and everything is working as it's supposed to.

Now I want to install the latest version of vMicro for Visual Studio 2017. Before I do I have a question. 

In this link it says to be sure the:

"Embedded and IoT Development component is also selected" 

and

"VS2017 versions must now be directly installed from the Forum, or can be downloaded from here."

The downloaded from here link goes to a oops page where someone should receive 2000 lashes. (lol)

https://www.visualmicro.com/page/Arduino-Visual-Studio-Downloads.aspx

Down below there is a link for a mixed 2017/2019 download.

Another install page for VS 2017 makes no mention of installing the Embedded and IoT Development component.

https://www.visualmicro.com/page/User-Guide.aspx?doc=Getting-started.html

Question:
Is the Embedded and IoT Development component needed and is there a particular download specifically for VS 2017? Silly questions but I am trying to cover all my bases before I install again.

Thanks, Randy

All fixed thank you for your help!


Randy