AMT630A

AMT630A OSD

The AMT630A OSD library is an Arduino/ESP32 integration tool designed to facilitate the control of the on-screen display (OSD) engine in AMT630A-based composite-video LCD monitor boards. This library allows for extensive manipulation of the OSD features through a straightforward API, streamlining the development of custom graphical interfaces for compatible displays.

Key Features

• Multiple OSD Windows: Manage up to five independently positioned OSD windows.
• Font Support: Utilizes LargeFont (16x22 pixel) and SmallFont (10x16 pixel) for text rendering.
• Graphics Functions: Includes capabilities for text drawing, custom glyphs, and 16-color 4bpp bitmap support. Dynamic adjustments like window scaling, blinking regions, and opacity blending are also possible.
• Resource Management: Efficiently allocate and inspect shared 512-cell Index RAM for handling text and bitmap resources.
• Factory Menu Access: Provides automation for hidden factory menu entry on select monitor models with specific firmware configurations.

Installation and Setup

This library can be easily integrated into Arduino IDE. Access the repository's documents on installation through the Arduino Library Manager or from ZIP files for straightforward implementation.

Example Code Snippet

Here is a basic usage example demonstrating how to set up and render text on the display:

#include <AMT630A_OSD.h>

AMT630A_OSD display;

void setup() {
  Serial.begin(115200);
  if (!display.begin()) return;
  if (!display.setFontMode(AMT630A_OSD::LargeFont)) return;
  if (!display.configureWindow(0, 160, 44)) return;

  display.setDisplayOrigin(0, 40, 40);
  display.writeString(0, 0, 0, "HELLO", AMT630A_OSD::White);
  display.setVisible(0, true);
  display.forceUpdate();
}

void loop() {
  display.service();
}

Image Conversion Tool

The library includes a Python-based bitmap converter, making it easy to transform images into a format compatible with the AMT630A's display system. This tool ensures that images are appropriately sized and colored for optimal rendering, promoting a seamless incorporation of visuals into projects.

Important Considerations

• Compatibility: The library has been tested against specific AMT630A hardware. Compatibility may vary depending on individual firmware versions, and testing with respective hardware is recommended.
• Memory Constraints: Understanding the memory limitations of the AMT630A's Font RAM is essential for optimal performance and resource allocation in applications.

For detailed documentation and API references, please consult the complete README file. Additionally, reference available examples to explore various functionalities and configurations.