// Start session for messages session_start();
function handleImageAPI($display) // API image handling logic return ['success' => true];
/** * Display multiple images in sequence */ public function displaySlideshow($images, $delay = 5) foreach ($images as $imagePath) $image = $this->loadImage($imagePath); $this->display($image); imagedestroy($image); sleep($delay); epaper php script
/** * 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;
// Supported color modes const COLOR_BW = 1; // Black/White const COLOR_BWR = 2; // Black/White/Red const COLOR_BWY = 3; // Black/White/Yellow // Start session for messages session_start()
?> # 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);
/** * Create a blank image buffer */ public function createBlankImage() $image = imagecreatetruecolor($this->width, $this->height); // Set white background $white = imagecolorallocate($image, 255, 255, 255); imagefill($image, 0, 0, $white); return $image; for ($y = 0
// Run the web interface $webInterface = new EPaperWebInterface(); $webInterface->handleRequest(); ?> # Install required PHP packages sudo apt-get install php-gd php-imagick Set permissions for framebuffer sudo chmod 666 /dev/fb0 Create required directories mkdir -p uploads fonts Download a font wget -O fonts/FreeSans.ttf https://github.com/google/fonts/raw/main/apache/opensans/OpenSans-Regular.ttf System Integration Script # /usr/local/bin/epaper_refresh.py #!/usr/bin/env python3 import sys import fcntl import struct import os E-Paper refresh IOCTL command (vendor specific) FBIO_REFRESH = 0x4600
public function __construct($width = 800, $height = 480, $colorMode = self::COLOR_BW) $this->width = $width; $this->height = $height; $this->colorMode = $colorMode; $this->rotation = 0; $this->devicePath = '/dev/fb0'; // Framebuffer device
/** * Send display refresh command */ private function sendRefreshCommand() // Execute system command to refresh e-paper exec('echo 1 > /sys/class/graphics/fb0/refresh'); // Alternative: send IOCTL command via Python script exec('python3 /usr/local/bin/epaper_refresh.py');
public function handleRequest() if ($_SERVER['REQUEST_METHOD'] === 'POST') if (isset($_FILES['image'])) $this->handleImageUpload(); elseif (isset($_POST['text'])) $this->handleTextDisplay(); $this->renderInterface();