This version of the ESP32_ESC_POS library provides comprehensive control over ESC/POS thermal printers using an ESP32 via Wi-Fi. Key features include:
Connection Management: Establish and terminate connections with the printer. Basic Printing Functions: Print text, feed paper, and cut paper. Text Formatting: Set bold text, text size, character set, and code page. Buffer Management: Efficiently manage a buffer for sending commands to the printer. Character Verification: Ensure text contains only supported characters. Special Character Printing: Print special characters based on the selected code page and character set. The library is designed to be easy to use and integrate into ESP32 projects, providing a robust solution for thermal printing needs.

ESP32_ESC_POS Library

This version of the ESP32_ESC_POS library provides comprehensive control over ESC/POS thermal printers using an ESP32 via Wi-Fi. Key features include:

• Connection Management: Establish and terminate connections with the printer.
• Basic Printing Functions: Print text, feed paper, and cut paper.
• Text Formatting: Set bold text, text size, character set, and code page.
• Buffer Management: Efficiently manage a buffer for sending commands to the printer.
• Character Verification: Ensure text contains only supported characters.
• Special Character Printing: Print special characters based on the selected code page and character set.

The library is designed to be easy to use and integrate into ESP32 projects, providing a robust solution for thermal printing needs.

Instructions for Using ESP32_ESC_POS Library

1. Include the Library: Include the ESP32_ESC_POS library in your project.

   #include "ESP32_ESC_POS.h"

2. Initialize the Library: Create an instance of the ESP32_ESC_POS class with the IP address and port of your thermal printer.

   ESP32_ESC_POS printer("192.168.0.100", 9100);

3. Connect to the Printer: Use the connect method to establish a connection with the printer.

   if (printer.connect()) {
       Serial.println("Connected to printer");
   } else {
       Serial.println("Failed to connect to printer");
   }

4. Initialize the Printer: Initialize the printer to set it to a known state.

   printer.initialize();

5. Print Text: Use the print method to print text.

   printer.print("Hello, World!");

6. Feed Paper: Use the feed method to feed a specified number of lines.

   printer.feed(3);

7. Cut Paper: Use the cut method to cut the paper.

   printer.cut();

8. Set Text Formatting:

   • Bold Text: Use the setBold method to enable or disable bold text.

     printer.setBold(true); // Enable bold text
     printer.setBold(false); // Disable bold text

   • Text Size: Use the setTextSize method to set the text size (1 to 8).

     printer.setTextSize(2); // Set text size to 2

9. Set Character Set and Code Page:

   • Character Set: Use the setCharset method to set the character set.

     printer.setCharset(0); // Set character set to 0

   • Code Page: Use the setCodePage method to set the code page.

     printer.setCodePage(0); // Set code page to 0

10. Read Printer Response: Use the readResponse method to read the response from the printer.

    String response = printer.readResponse();
    Serial.println(response);

11. Verify Characters: Use the verifyCharacters method to ensure the text contains only supported characters.

    if (printer.verifyCharacters("Hello, World!")) {
        Serial.println("Text is valid");
    } else {
        Serial.println("Text contains unsupported characters");
    }

12. Print Special Characters: Use the printSpecialCharacters method to print special characters based on the selected code page and character set.

    printer.printSpecialCharacters(0, 0); // Print special characters for code page 0 and charset 0

Example Usage

#include <WiFi.h>
#include "ESP32_ESC_POS.h"

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

ESP32_ESC_POS printer("192.168.0.100", 9100);

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);

    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.println("Connecting to WiFi...");
    }

    Serial.println("Connected to WiFi");

    if (printer.connect()) {
        Serial.println("Connected to printer");
        printer.initialize();
        printer.setBold(true);
        printer.print("Hello, World!");
        printer.setBold(false);
        printer.feed(3);
        printer.cut();
    } else {
        Serial.println("Failed to connect to printer");
    }
}

void loop() {
    // Your code here
}