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https://github.com/t0mer/greenapi-whatsapp-library

Send WhatsApp messages from your Arduino projects using Green-API
https://github.com/t0mer/greenapi-whatsapp-library

arduino embedded esp32 esp8266 green-api internet-of-things iot messaging whatsapp

Last synced: 22 days ago
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Send WhatsApp messages from your Arduino projects using Green-API

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README 

        
# GreenApi Arduino Library



The GreenApi Arduino Library allows you to easily send WhatsApp messages from your Arduino projects using the Green-API service. This library simplifies the process of integrating WhatsApp messaging capabilities into your Arduino sketches.



## Introduction



The GreenApi library provides a simple interface to interact with the Green-API service for sending WhatsApp messages. It abstracts away the complexities of HTTP requests and JSON formatting, allowing you to focus on your project's functionality.



## Getting started



### Setup Green API account

Nevigate to [https://green-api.com/en](https://green-api.com/en) and register for a new account:

![Register](screenshots/register.png)



Fill up your details and click on **Register**:

![Create Account](screenshots/create_acoount.png)



Next, click on the "Create an instance":

![Create Instance](screenshots/create_instance.png)



Select the "Developer" instance (Free):

![Developer Instance](screenshots/developer_instance.png)



Copy the InstanceId and Token, we need it for the integration settings:

![Instance Details](screenshots/instance_details.png)



Next, Lets connect our whatsapp with green-api. On the left side, Under API --> Account, click on QR and copy the QR URL to the browser and click on "Scan QR code"



![Send QR](screenshots/send_qr.png)



![Scan QR](screenshots/scan_qr.png)



Next, Scan the QR code to link you whatsapp with Green API:



![QR Code](screenshots/qr.png)



After the account link, you will notice that the instance is active by the green light in the instance header:

![Active Instance](screenshots/active_instance.png)



### Getting the Contacts and Groups

Before we can start messaging, we need to get the Contact/Group details. we can do it using Green API endpoint.

On the lef side, Under API --> Service methods, click on "getContacts" and then click "Send":

![Get Contacts](screenshots/get_contacts.png)



As a result, you will get the list of Contacts and Groups.

* The contact number ends with **@c.us**

* The group number ends with **@g.us**



![Contacts Lists](screenshots/contacts_list.png)



Write down the Id, you will need it to configure the notification.



## Installing the library



To use the GreenApi library in your Arduino projects, follow these steps:



1. Download the latest release of the GreenApi library from the [GitHub releases page](https://github.com/t0mer/GreenApi-WhatsApp-Library/releases).

2. Extract the downloaded ZIP file.

3. Move the extracted folder to the `libraries` directory in your Arduino sketchbook.

4. Restart the Arduino IDE.



## Usage



Here's a simple example sketch demonstrating how to use the GreenApi library to send a WhatsApp message:



```cpp

#include 

#include  // Include WiFi library if connecting to WiFi

#include 



const char* ssid = "YourWiFiSSID";

const char* password = "YourWiFiPassword";

const char* instanceId = "YourInstanceId";

const char* instanceToken = "YourInstanceToken";

const char* target = "YourChatId";

const char* message = "Hello, this is a test message from my new library!";



// Create an instance of the GreenApi class

GreenApi greenApi(instanceId, instanceToken);



void setup() {

  Serial.begin(115200);

  delay(1000);



  // Connect to Wi-Fi (if needed)

  Serial.println("Connecting to Wi-Fi...");

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.println("\nConnected to Wi-Fi!");



  // Send message using GreenApi

  Serial.println("Sending message...");

  greenApi.sendMessage(target, message);

}



void loop() {

  // Your code here

}