Read this before creating new topic:
- Search forum for similar topics
- Check https://docs.blynk.io
- Add details :
• Hardware model + communication type. For example: ESP32
• Smartphone OS (iOS or Android) + OS version
• Blynk server region
• Blynk Library version
• Post your FORMATTED sketch code. Remove your AUTH TOKEN from code. Don’t post screenshots
• Post your serial monitor output when experiencing some issues
If you don’t format your code, your topic can be deleted by moderators.
Here is a correct example of code formatting:
/*************************************************************
This is a simple demo of sending and receiving some data.
Be sure to check out other examples!
*************************************************************/
/* Fill-in information from Blynk Device Info here */
#define BLYNK_TEMPLATE_ID "TMPL2SvsMP-79"
#define BLYNK_TEMPLATE_NAME "Quickstart Device"
#define BLYNK_AUTH_TOKEN ""
/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wokwi-Guest";
char pass[] = "";
BlynkTimer timer;
// This function is called every time the Virtual Pin 0 state changes
BLYNK_WRITE(V0)
{
// Set incoming value from pin V0 to a variable
int value = param.asInt();
// Update state
Blynk.virtualWrite(V1, value);
}
// This function is called every time the device is connected to the Blynk.Cloud
BLYNK_CONNECTED()
{
// Change Web Link Button message to "Congratulations!"
Blynk.setProperty(V3, "offImageUrl", "https://static-image.nyc3.cdn.digitaloceanspaces.com/general/fte/congratulations.png");
Blynk.setProperty(V3, "onImageUrl", "https://static-image.nyc3.cdn.digitaloceanspaces.com/general/fte/congratulations_pressed.png");
Blynk.setProperty(V3, "url", "https://docs.blynk.io/en/getting-started/what-do-i-need-to-blynk/how-quickstart-device-was-made");
}
// This function sends Arduino's uptime every second to Virtual Pin 2.
void myTimerEvent()
{
// You can send any value at any time.
// Please don't send more that 10 values per second.
Blynk.virtualWrite(V2, millis() / 1000);
}
void setup()
{
// Debug console
Serial.begin(115200);
Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
// You can also specify server:
//Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, "blynk.cloud", 80);
//Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass, IPAddress(192,168,1,100), 8080);
// Setup a function to be called every second
timer.setInterval(1000L, myTimerEvent);
}
void loop()
{
Blynk.run();
timer.run();
// You can inject your own code or combine it with other sketches.
// Check other examples on how to communicate with Blynk. Remember
// to avoid delay() function!
}
//platformio.ini
; PlatformIO Project Configuration File
;
; Build options: build flags, source filter
; Upload options: custom upload port, speed and extra flags
; Library options: dependencies, extra library storages
; Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html
[env:esp32]
platform = espressif32
framework = arduino
board = esp32dev
lib_deps =
adafruit/DHT sensor library@^1.4.6
https://github.com/khoih-prog/BlynkESP32_BT_WF.git
https://github.com/arduino-libraries/WiFi
adafruit/Adafruit Unified Sensor@^1.1.14
//error messages
In file included from src/sketch.ino.cpp:18:
.pio/libdeps/esp32/Blynk/src/BlynkSimpleEsp32.h: In member function 'void BlynkWifi::connectWiFi(const char*, const char*)':
.pio/libdeps/esp32/Blynk/src/BlynkSimpleEsp32.h:39:14: error: 'class WiFiClass' has no member named 'mode'
WiFi.mode(WIFI_STA);
^~~~
.pio/libdeps/esp32/Blynk/src/BlynkSimpleEsp32.h:39:19: error: 'WIFI_STA' was not declared in this scope
WiFi.mode(WIFI_STA);
^~~~~~~~
Archiving .pio\build\esp32\libbba\libBlynkNcpDriver.a
Compiling .pio\build\esp32\lib51f\WiFi\WiFiClient.cpp.o
*** [.pio\build\esp32\src\sketch.ino.cpp.o] Error 1
============================================================================================== [FAILED] Took 12.68 seconds ==============================================================================================
I’m very new to this. The sketch compiled in Wokwi.com but will not compile in VSCode for Wokwi with PlatformIO. I’ve looked on other people’s messages and there doesn\t seem to be anything that applies to me. Maybe they do and I’m not understanding. But I would really appreaciate help with this.