Problem in connecting BLE to ESP32 board

Solved
1

I had uploaded the standalone code of Blynk BLE as mentioned below and tried connecting to the device ESP32 , initially it got connected and when I tried to connect it again, it was not connecting. Anyone faced this issue?

#define BLYNK_USE_DIRECT_CONNECT

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

/* Fill-in your Template ID (only if using Blynk.Cloud) */
//#define BLYNK_TEMPLATE_ID   "YourTemplateID"


#include <BlynkSimpleEsp32_BLE.h>
#include <BLEDevice.h>
#include <BLEServer.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "KcKucr4uIYEndW5PUols--AUVKnaF_7O";

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

  Serial.println("Waiting for connections...");

  Blynk.setDeviceName("Blynk");

  Blynk.begin(auth);
}

void loop()
{
  Blynk.run();
}
2

Is this a Legacy Auth token, or an IoT Auth token?
Which version of the Blynk app and Blynk library are you using?

Pete.

3

Hi Pete,

It is a Blynk Legacy auth token and the Blynk Library version 0.6.1.

4

Are you seeing the “Blynk” device in the BLE widget in the Blynk app?
If so, what does it say when you try to connect?
Screenshots would be helpful.

Pete.

5

Hello Sir,

“Blynk” is seen on the app in the ‘select device list’ however when I select it,connection is not established. I am attaching screenshots from the app as below;

Screenshot_2021-10-23-17-42-06-32
Screenshot_2021-10-23-17-42-06-321080×2160 60.6 KB
Screenshot_2021-10-23-17-43-15-88
Screenshot_2021-10-23-17-43-15-881080×2160 62.2 KB
Screenshot_2021-10-23-17-43-41-73
Screenshot_2021-10-23-17-43-41-731080×2160 72.5 KB

6

Hello All,

My Blynk legacy BLE connection issue is resolved now. I don’t know if it got resolved because I tried connecting off peak hour( tried after 12:30am). Multiple attempts were sucessful. Thank you.