Blynk_Teensy

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Table of Contents

• Why do we need this Blynk_Teensy library
  • Features
• Changelog
• Prerequisites
• Installation
  • Use Arduino Library Manager
  • Manual Install
  • VS Code & PlatformIO
• How to use
• Examples
  • 1. Teensy40_ESP8266Shield
  • 2. Teensy40_Serial_USB
• Sample code
• Troubleshooting
• Issues
• TO DO
• DONE
• Contributions and Thanks
• Contributing
• License
• Copyright

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Why do we need this Blynk_Teensy library

Features

To enable Blynk support of Teensy boards, especially latest Teensy 4.1/4.0

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Prerequisites

1. Arduino IDE 1.8.19+ for Arduino.
2. Blynk library 1.0.1+. .
3. Teensy core 1.56 for Teensy (4.1, 4.0, 3.6, 3.5, 3,2, 3.1, 3.0, LC) boards.

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Installation

The suggested way to install is to:

Use Arduino Library Manager

The best way is to use Arduino Library Manager. Search for Blynk_Teensy, then select / install the latest version. You can also use this link for more detailed instructions.

Then copy BlynkDetectDevice.h to folder ~/Arduino/libraries/Blynk/src/Blynk to overwrite the original file BlynkDetectDevice.h.

Manual Install

1. Navigate to Blynk_Teensy page.
2. Download the latest release Blynk_Teensy-master.zip.
3. Extract the zip file to Blynk_Teensy-master directory
4. Copy whole

• Blynk_Teensy-master/src folder to Arduino libraries' directory such as ~/Arduino/libraries/.

The file BlynkSimpleShieldEsp8266_Teensy.h must be placed in Blynk libraries src directory (normally ~/Arduino/libraries/Blynk/src).

Then copy BlynkDetectDevice.h to folder ~/Arduino/libraries/Blynk/src/Blynk to overwrite the original file BlynkDetectDevice.h. By doing this, the correct board type can be displayed correctly along with Blynk logo as follows:

    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.6.1 on Teensy 4.1/4.0

not just unknown Arduino board type:

    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.6.1 on Arduino

VS Code & PlatformIO:

1. Install VS Code
2. Install PlatformIO
3. Install Blynk_Teensy library by using Library Manager. Search for Blynk_Teensy in Platform.io Author's Libraries
4. Please visit documentation for the other options and examples at Project Configuration File

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How to use

In your code, just replace

1. BlynkSimpleShieldEsp8266.h with BlynkSimpleShieldEsp8266_Teensy.h

That's it.

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Examples

1. Teensy40_ESP8266Shield
2. Teensy40_Serial_USB

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Sample code

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

// You could use a spare Hardware Serial on boards that have it (like Mega)

#define HWSERIAL        Serial2       // Pin RX2 : 7, TX2 : 8 for Teensy 4.0

#include <ESP8266_Lib.h>

#include <BlynkSimpleShieldEsp8266_Teensy.h>

String cloudBlynkServer = "account.duckdns.org";

#define BLYNK_SERVER_HARDWARE_PORT    8080

char auth[] = "your-token";

#define SSID_MAX_LEN      32
#define PASS_MAX_LEN      64

// Your WiFi credentials.
char ssid[] = "ssid";
char pass[] = "pass";

#define EspSerial Serial2   //Serial2, Pin RX2 : 7, TX2 : 8

// Your Teensy <-> ESP8266 baud rate:
#define ESP8266_BAUD 115200

ESP8266 wifi(&EspSerial);

void setup() 
{
  // Debug console
  Serial.begin(115200);
  delay(1000);
  Serial.println("\nStart Teensy 4.0");

  // Set ESP8266 baud rate
  EspSerial.begin(ESP8266_BAUD);
  delay(10);

  Serial.println("Start Blynk");

  Blynk.begin(auth, wifi, ssid, pass, cloudBlynkServer.c_str(), BLYNK_SERVER_HARDWARE_PORT);
}

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

and this is the terminal debug output when running the example

Start Teensy 4.0
Start Blynk
[1310] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.6.1 on Teensy 4.0

[1310] Connecting to HueNet1
[7876] AT version:0.40.0.0(Aug  8 2015 14:45:58)
SDK version:1.3.0
Ai-Thinker Technology Co.,Ltd.
Build:1.3.0.2 Sep 11 2015 11:48:04
OK
[15448] IP = 192.168.2.107
+CIFSR:STAMAC,5c:cf:7f:66:05:d2
[15448] Connected to WiFi
[25601] Ready (ping: 14ms).

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Issues

Submit issues to: Blynk_Teensy issues

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TO DO

1. Same features for other shields such as WiFi, Ethernet, BT/BLE, GSM/GPRS.

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DONE

1. Basic support for Teensy

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Contributions and Thanks

Many thanks for everyone for bug reporting, new feature suggesting, testing and contributing to the development of this library.

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Contributing

If you want to contribute to this project:

• Report bugs and errors
• Ask for enhancements
• Create issues and pull requests
• Tell other people about this library

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License

• The library is licensed under MIT

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Copyright

Copyright 2020- Khoi Hoang