Trouble getting Wemo to compile with Blynk Library

Solved
1

I have successfully programmed Wemo D1 minis for several years and now I’m very interested in trying out the Blynk library. My problem is I can’t get the example program ESP8266_Standalone.ino to compile with the Blynk library.

  1. Installed the additional boards manager in Preferences
    http://arduino.esp8266.com/stable/package_esp8266com_index.json
  2. Installed latest Blynk library using the Library Manager
    Blynk Version 0.6.1
  3. Uninstalled Library Manager version and reinstalled Manually as per
    http://help.blynk.cc/en/articles/512105-how-to-install-blynk-library-for-arduino-ide
  4. Arduino IDE 1.8.13
  5. Selected the board
    WeMos D1 R1 (I’ve also tried all the other 3 Wemo options with same result)
  6. Entered correct ssid, password and Auth code
/*************************************************************
  Download latest Blynk library here:
    https://github.com/blynkkk/blynk-library/releases/latest

  Blynk is a platform with iOS and Android apps to control
  Arduino, Raspberry Pi and the likes over the Internet.
  You can easily build graphic interfaces for all your
  projects by simply dragging and dropping widgets.

    Downloads, docs, tutorials: http://www.blynk.cc
    Sketch generator:           http://examples.blynk.cc
    Blynk community:            http://community.blynk.cc
    Follow us:                  http://www.fb.com/blynkapp
                                http://twitter.com/blynk_app

  Blynk library is licensed under MIT license
  This example code is in public domain.

 *************************************************************
  This example runs directly on ESP8266 chip.

  Note: This requires ESP8266 support package:
    https://github.com/esp8266/Arduino

  Please be sure to select the right ESP8266 module
  in the Tools -> Board menu!

  Change WiFi ssid, pass, and Blynk auth token to run :)
  Feel free to apply it to any other example. It's simple!
 *************************************************************/

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "##############################";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "####";
char pass[] = "#####";

void setup()
{
  // Debug console
  Serial.begin(9600);

  Blynk.begin(auth, ssid, pass);
}

void loop()
{
  Blynk.run();
}

Here is the result when I compile with Preferences->Compiler warnings = More

(Hopefully this isnt too much text and is helpful)

Arduino: 1.8.13 (Windows 10), Board: "WeMos D1 R1, 80 MHz, 4M (1M SPIFFS), v2 Prebuilt (MSS=536), Disabled, None, 921600"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Carol\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Carol\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Carol\Documents\Arduino\libraries -fqbn=esp8266:esp8266:d1:CpuFrequency=80,FlashSize=4M1M,LwIPVariant=v2mss536,Debug=Disabled,DebugLevel=None____,UploadSpeed=921600 -vid-pid=1A86_7523 -ide-version=10813 -build-path C:\Users\Carol\AppData\Local\Temp\arduino_build_891141 -warnings=more -build-cache C:\Users\Carol\AppData\Local\Temp\arduino_cache_511408 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -prefs=runtime.tools.xtensa-lx106-elf-gcc-1.20.0-26-gb404fb9-2.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -prefs=runtime.tools.mkspiffs.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.2.0 -prefs=runtime.tools.mkspiffs-0.2.0.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.2.0 -prefs=runtime.tools.esptool.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.12 -prefs=runtime.tools.esptool-0.4.12.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.12 -verbose C:\Users\Carol\Documents\Arduino\ESP8266_Standalone\ESP8266_Standalone.ino

C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -hardware C:\Users\Carol\AppData\Local\Arduino15\packages -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -tools C:\Users\Carol\AppData\Local\Arduino15\packages -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Carol\Documents\Arduino\libraries -fqbn=esp8266:esp8266:d1:CpuFrequency=80,FlashSize=4M1M,LwIPVariant=v2mss536,Debug=Disabled,DebugLevel=None____,UploadSpeed=921600 -vid-pid=1A86_7523 -ide-version=10813 -build-path C:\Users\Carol\AppData\Local\Temp\arduino_build_891141 -warnings=more -build-cache C:\Users\Carol\AppData\Local\Temp\arduino_cache_511408 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.xtensa-lx106-elf-gcc.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -prefs=runtime.tools.xtensa-lx106-elf-gcc-1.20.0-26-gb404fb9-2.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2 -prefs=runtime.tools.mkspiffs.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.2.0 -prefs=runtime.tools.mkspiffs-0.2.0.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\mkspiffs\0.2.0 -prefs=runtime.tools.esptool.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.12 -prefs=runtime.tools.esptool-0.4.12.path=C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\tools\esptool\0.4.12 -verbose C:\Users\Carol\Documents\Arduino\ESP8266_Standalone\ESP8266_Standalone.ino

Using board 'd1' from platform in folder: C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.0

Using core 'esp8266' from platform in folder: C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.0

Detecting libraries used...

"C:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\tools\\xtensa-lx106-elf-gcc\\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/include" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/lwip2/include" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/libc/xtensa-lx106-elf/include" "-IC:\\Users\\Carol\\AppData\\Local\\Temp\\arduino_build_891141/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DARDUINO=10813 -DARDUINO_ESP8266_WEMOS_D1MINI -DARDUINO_ARCH_ESP8266 "-DARDUINO_BOARD=\"ESP8266_WEMOS_D1MINI\"" -DESP8266 "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\cores\\esp8266" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\variants\\d1" "C:\\Users\\Carol\\AppData\\Local\\Temp\\arduino_build_891141\\sketch\\ESP8266_Standalone.ino.cpp" -o nul -DARDUINO_LIB_DISCOVERY_PHASE

Alternatives for ESP8266WiFi.h: [ESP8266WiFi@1.0]

ResolveLibrary(ESP8266WiFi.h)

  -> candidates: [ESP8266WiFi@1.0]

"C:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\tools\\xtensa-lx106-elf-gcc\\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/include" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/lwip2/include" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/libc/xtensa-lx106-elf/include" "-IC:\\Users\\Carol\\AppData\\Local\\Temp\\arduino_build_891141/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DARDUINO=10813 -DARDUINO_ESP8266_WEMOS_D1MINI -DARDUINO_ARCH_ESP8266 "-DARDUINO_BOARD=\"ESP8266_WEMOS_D1MINI\"" -DESP8266 "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\cores\\esp8266" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\variants\\d1" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\libraries\\ESP8266WiFi\\src" "C:\\Users\\Carol\\AppData\\Local\\Temp\\arduino_build_891141\\sketch\\ESP8266_Standalone.ino.cpp" -o nul -DARDUINO_LIB_DISCOVERY_PHASE

Alternatives for BlynkSimpleEsp8266.h: [arduino_615261@0.6.0 Blynk@0.6.1]

ResolveLibrary(BlynkSimpleEsp8266.h)

  -> candidates: [arduino_615261@0.6.0 Blynk@0.6.1]

"C:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\tools\\xtensa-lx106-elf-gcc\\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-g++" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/include" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/lwip2/include" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0/tools/sdk/libc/xtensa-lx106-elf/include" "-IC:\\Users\\Carol\\AppData\\Local\\Temp\\arduino_build_891141/core" -c -w -Os -g -mlongcalls -mtext-section-literals -fno-exceptions -fno-rtti -falign-functions=4 -std=c++11 -ffunction-sections -fdata-sections -w -x c++ -E -CC -DF_CPU=80000000L -DLWIP_OPEN_SRC -DTCP_MSS=536 -DARDUINO=10813 -DARDUINO_ESP8266_WEMOS_D1MINI -DARDUINO_ARCH_ESP8266 "-DARDUINO_BOARD=\"ESP8266_WEMOS_D1MINI\"" -DESP8266 "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\cores\\esp8266" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\variants\\d1" "-IC:\\Users\\Carol\\AppData\\Local\\Arduino15\\packages\\esp8266\\hardware\\esp8266\\2.4.0\\libraries\\ESP8266WiFi\\src" "-IC:\\Users\\Carol\\Documents\\Arduino\\libraries\\Blynk\\src" "C:\\Users\\Carol\\AppData\\Local\\Temp\\arduino_build_891141\\sketch\\ESP8266_Standalone.ino.cpp" -o nul -DARDUINO_LIB_DISCOVERY_PHASE

Alternatives for version.h: []

ResolveLibrary(version.h)

  -> candidates: []om C:\Users\Carol\Documents\Arduino\ESP8266_Standalone\ESP8266_Standalone.ino:37:0:



C:\Users\Carol\Documents\Arduino\libraries\Blynk\src/BlynkSimpleEsp8266.h:18:21: fatal error: version.h: No such file or directory

Multiple libraries were found for "BlynkSimpleEsp8266.h"

 #include <version.h>

 Used: C:\Users\Carol\Documents\Arduino\libraries\Blynk

                     ^

 Not used: C:\Users\Carol\Documents\Arduino\libraries\arduino_615261

compilation terminated.

Using library ESP8266WiFi at version 1.0 in folder: C:\Users\Carol\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.4.0\libraries\ESP8266WiFi 

Using library Blynk at version 0.6.1 in folder: C:\Users\Carol\Documents\Arduino\libraries\Blynk 

exit status 1

Error compiling for board WeMos D1 R1.

*****************************************************************

I find the line “C:\Users\Carol\Documents\Arduino\libraries\Blynk\src/BlynkSimpleEsp8266.h:18:21: fatal error: version.h: No such file or directory” suspicious with a forward slash.

Thanks for any help.

2

The forward slash is fine, it’s how the Arduino IDE reports paths and I agree that it’s confusing, but it’s not the problem.

I think you’ve managed to mess-up this part of the process. You appear to have two versions of the Blynk library installed…
Alternatives for BlynkSimpleEsp8266.h: [arduino_615261@0.6.0 Blynk@0.6.1]

This shows that you have Blynk version 0.6.0 installed as well as version 0.6.1 and the “file not found” message tells me that you have some missing files (or the files are there, but in the wrong folder structure).

I’d suggest that you manually delete both of these libraries and start again. I’m not sure that it’s any longer necessary to manually follow the installation instructions that you used, I believe that it’s okay to simply install vis Sketch, Include, Manage Libraries in the IDE

Other things to note…

You need to go into Tools, Board, Boards Manager and find “esp8266 by ESP8266 Community” (usually down at the bottom of the list, and update it from 2.4.0 to 2.7.4

This will change the way that board types are displayed in Tools, Board and you’ll now have an extra sub-menu called “ESP8266 Boards (2.7.4)” the correct selection for the Wemos D1 Mini is “LOLIN(WEMOS) D1 R2 & mini”.

Pete.

3

Thank you SO much for your timely response and great help!

My problem was indeed a messed up esp board library. Awhile back I had downloaded an old version of the ESP library (2.4.0). Somehow 2.7.4 showed up as “installed” in Library Manager, but when I dug in I found that there was nothing in the 2.7.4 directory. So I uninstalled the whole esp8266 boards and reinstalled it. Then my sketch compiled fine.

Now I’m off and running with this AWESOME new-to-me tool.

Thanks again.

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