Documentation
All resources and tools for serial HMI development
📋 Instruction Set Manuals
TFT Serial HMI Instruction Set V3.0
All TFT color serial HMI control commands, protocol format, and sample code
PDFOLED Serial Module Instruction Set
OLED series UART communication protocol and display control commands
PDFMonochrome LCD Module Programming Manual
Segment/dot matrix LCD parallel/SPI/IIC driver documentation
PDFVisual OCM Software User Manual
UI design tool installation, usage, and flash programming guide
PDF🔌 Reference Circuit Diagrams
TTL Level Connection Diagram
Standard wiring for MCU TX/RX to serial HMI
RS232 Interface Circuit
MAX232/MAX3232 level shifter reference design
RS485 Interface Circuit
Half-duplex RS485 communication hardware connection
Power Supply Design Reference
3.3V/5V power supply and filtering circuit recommendations
💻 Sample Code
STM32 Driver Example
HAL-based UART driver with display, touch, and RTC examples
CArduino Example
SoftwareSerial/HardwareSerial driver, ideal for rapid prototyping
C++ESP32/ESP8266 Example
Serial HMI driver for WiFi IoT applications
C++C51/STC MCU Example
Traditional 8051 UART driver code
C🛠️ Software Tools
Visual OCM UI Design Tool
Drag-and-drop UI design with button/text/gauge/animation support, one-click flash to display
Font Generator Tool
Convert Chinese fonts to dot-matrix data, supports 16×16/24×24/32×32 and more
Image Converter Tool
Convert JPG/PNG images to serial HMI compatible image data format
Serial Debug Assistant
Send/receive serial data, essential tool for debugging serial HMI commands
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