Epaper Php Script Apr 2026

Epaper Php Script Apr 2026

/** * Send image to e-paper display */ public function display($image) $converted = $this->convertForEPaper($image); $framebuffer = $this->generateFramebuffer($converted); // Write to framebuffer $fb = fopen($this->devicePath, 'wb'); if (!$fb) throw new Exception("Cannot open framebuffer device"); fwrite($fb, $framebuffer); fclose($fb); // Send refresh command (system dependent) $this->sendRefreshCommand(); imagedestroy($converted); return true;

?> # Update e-paper display every hour with weather data 0 * * * * php /var/www/epaper/fetch_weather.php Update with RSS feed every 30 minutes */30 * * * * php /var/www/epaper/fetch_rss.php Usage Examples // Basic usage $display = new EPaperDisplay(800, 480); $display->displayText("Hello E-Paper!", 48); // Display image $image = $display->loadImage('photo.jpg'); $display->display($image);

private function handleTextDisplay() $text = $_POST['text']; $fontSize = $_POST['font_size'] ?? 24; try $this->display->displayText($text, $fontSize); $_SESSION['message'] = "Text displayed successfully!"; catch (Exception $e) $_SESSION['message'] = "Error: " . $e->getMessage();

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/** * Generate frame buffer data */ public function generateFramebuffer($image) $buffer = ''; for ($y = 0; $y < $this->height; $y++) for ($x = 0; $x < $this->width; $x++) $b5; $buffer .= pack('v', $pixel); return $buffer;

/** * Load image from file */ public function loadImage($path) $extension = strtolower(pathinfo($path, PATHINFO_EXTENSION)); switch($extension) case 'jpg': case 'jpeg': return imagecreatefromjpeg($path); case 'png': return imagecreatefrompng($path); case 'bmp': return imagecreatefrombmp($path); default: throw new Exception("Unsupported image format: $extension");

/** * Create text display */ public function displayText($text, $fontSize = 24, $fontFile = null) $image = $this->createBlankImage(); // Default font if none specified if (!$fontFile) $fontFile = __DIR__ . '/fonts/FreeSans.ttf'; $black = imagecolorallocate($image, 0, 0, 0); // Calculate text position (center) $bbox = imagettfbbox($fontSize, 0, $fontFile, $text); $textWidth = $bbox[2] - $bbox[0]; $textHeight = $bbox[1] - $bbox[7]; $x = ($this->width - $textWidth) / 2; $y = ($this->height + $textHeight) / 2; imagettftext($image, $fontSize, 0, $x, $y, $black, $fontFile, $text); return $this->display($image); epaper php script

// Run the web interface $webInterface = new EPaperWebInterface(); $webInterface->handleRequest(); ?> # Install required PHP packages sudo apt-get install php-gd php-imagick Set permissions for framebuffer sudo chmod 666 /dev/fb0 Create required directories mkdir -p uploads fonts Download a font wget -O fonts/FreeSans.ttf https://github.com/google/fonts/raw/main/apache/opensans/OpenSans-Regular.ttf System Integration Script # /usr/local/bin/epaper_refresh.py #!/usr/bin/env python3 import sys import fcntl import struct import os E-Paper refresh IOCTL command (vendor specific) FBIO_REFRESH = 0x4600

$method = $_SERVER['REQUEST_METHOD']; $path = $_GET['path'] ?? '';

// Slideshow $images = ['img1.jpg', 'img2.jpg', 'img3.jpg']; $display->displaySlideshow($images, 10); /** * Send image to e-paper display */

<?php /** * E-Paper Display Management Script * Supports Waveshare, Pervasive Displays, and compatible e-paper screens */ class EPaperDisplay private $devicePath; private $width; private $height; private $rotation; private $colorMode;

private function renderInterface() ?> <!DOCTYPE html> <html> <head> <title>E-Paper Display Controller</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> body font-family: Arial, sans-serif; max-width: 800px; margin: 0 auto; padding: 20px; background: #f5f5f5; .container background: white; padding: 30px; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); h1 color: #333; border-bottom: 2px solid #4CAF50; padding-bottom: 10px; .section margin-bottom: 30px; padding: 20px; background: #f9f9f9; border-radius: 5px; .section h2 margin-top: 0; color: #555; input, textarea, button padding: 10px; margin: 5px 0; width: 100%; box-sizing: border-box; button background: #4CAF50; color: white; border: none; cursor: pointer; font-size: 16px; button:hover background: #45a049; .message padding: 10px; margin-bottom: 20px; border-radius: 5px; .success background: #d4edda; color: #155724; border: 1px solid #c3e6cb; .error background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; .info background: #e7f3ff; padding: 10px; border-radius: 5px; margin-top: 20px; </style> </head> <body> <div class="container"> <h1>📺 E-Paper Display Controller</h1> <?php if (isset($_SESSION['message'])): ?> <div class="message <?php echo strpos($_SESSION['message'], 'Error') === false ? 'success' : 'error'; ?>"> <?php echo htmlspecialchars($_SESSION['message']); unset($_SESSION['message']); ?> </div> <?php endif; ?> <div class="section"> <h2>Upload Image</h2> <form method="POST" enctype="multipart/form-data"> <input type="file" name="image" accept="image/*" required> <button type="submit">Display Image</button> </form> </div> <div class="section"> <h2>Display Text</h2> <form method="POST"> <textarea name="text" rows="3" placeholder="Enter text to display..." required></textarea> <input type="number" name="font_size" placeholder="Font Size (default: 24)" value="24"> <button type="submit">Display Text</button> </form> </div> <div class="info"> <strong>Display Info:</strong><br> <?php $info = $this->display->getInfo(); echo "Resolution: $info['width']x$info['height']<br>"; echo "Color Mode: " . ($info['color_mode'] == 1 ? "Black/White" : "Color") . "<br>"; echo "Device: $info['device']"; ?> </div> </div> </body> </html> <?php

This script provides a complete solution for controlling e-paper displays with PHP, including a web interface, API endpoints, and proper image processing for optimal e-paper rendering. '/fonts/FreeSans