Seeed Arduino LCD

A professional graphics library for Seeed hardware platforms, forked from TFT_eSPI with significant enhancements to support Seeed's development boards and display modules.

Key Features

• Enhanced Processor Support: Expanded compatibility with Seeed's diverse microcontroller lineup
• E-Paper Display Integration: Full support for E-Paper displays with SSD1680, SSD1681, and JD79686B drivers
• Platform-Specific Optimizations: Tailored implementations for superior performance on Seeed hardware
• Unified API: Consistent programming interface across different display technologies
• Power Management: Advanced sleep/wake functionality for battery-powered applications

Supported Platforms

Core Hardware Support

• Wio Terminal
• XIAO SAMD21
• XIAO RP2040/RP2350
• XIAO ESP32C3/ESP32S3/ESP32C6
• XIAO NRF52840
• XIAO MG24
• XIAO RA4M1

Display Technologies

• Standard TFT LCD displays (inherited from TFT_eSPI)
• E-Paper displays (new implementation)
  • SSD1680-based displays
  • SSD1681-based displays
  • JD79686B-based displays

E-Paper Implementation

The library includes a comprehensive implementation for E-Paper displays, providing:

• EPaper Class: Specialized class extending TFT_eSprite for E-Paper functionality
• Dual-Buffer Rendering: Efficient update mechanism using sprite-based buffering
• Power Management: Automatic sleep/wake cycles to maximize battery life
• Partial Updates: Support for region-specific refresh to improve update speed
• Display Orientation: Flexible orientation settings via configurable mirroring

// Example usage
EPaper epaper;
epaper.begin();
epaper.fillScreen(TFT_WHITE);
epaper.drawString("Hello E-Paper", 10, 10, 2);
epaper.update();  // Explicit update required for E-Paper displays

Technical Enhancements

Processor-Specific Optimizations

• Added specialized implementations for SAMD21, RA4M1, nRF52840, and MG24 processors
• Expanded ESP32 variant support including C3, C6, and S3 models
• Register-level optimizations for maximum performance on each platform

File System Integration

• Seamless integration with Seeed_Arduino_FS for compatible platforms
• Fallback to standard FS library for other platforms

Low-Level Display Interface

• Platform-specific implementations of SPI and parallel interfaces
• DMA acceleration where supported by hardware
• Custom pin configurations for Seeed development boards

Example Applications

The library includes numerous examples demonstrating:

• Basic drawing and text rendering
• Advanced sprite manipulation
• E-Paper-specific applications
• Hardware-accelerated rendering techniques

Installation

1. Download this repository
2. Install it into your Arduino libraries folder
3. Select the appropriate setup configuration for your hardware

Documentation

For detailed implementation information:

• Refer to original TFT_eSPI documentation for core functionality
• See examples directory for platform-specific usage guidance
• Explore the Extensions directory for advanced features

Licensing

This library is released under the same license as the original TFT_eSPI library.

Acknowledgments

Based on the excellent work of Bodmer's TFT_eSPI library, with significant enhancements by the Seeed Studio development team to support Seeed's hardware ecosystem.

For more information, please refer here