This project demonstrates how to interface an STM32F103C6 microcontroller with a KS0108-based graphical LCD using GPIO pins for data and control. By managing the LCD through direct pin manipulation, developers can render text and graphics with flexibility and clarity. The implementation includes hardware setup, initialization routines, and Proteus simulation for validation.
The KS0108 controller is widely used in graphical LCDs, supporting resolutions up to 64×64 pixels per controller. Larger displays combine multiple controllers—for example:
- 128×64 LCD → 2 controllers
- 128×128 LCD → 4 controllers
Key Features
- Internal memory: 512 bytes per controller
- Multiple chip support: Controlled by CS1, CS2, CS3, CS4 (depending on size)
- Page addressing: Display divided into 8 horizontal pages × 64 vertical columns
- No built-in font generator: Character data must be stored in microcontroller flash or external memory
- MCU: STM32F103C6 (8 MHz system clock)
- GPIO Configuration
- PA0–PA4 → Control signals (D/I, R/W, E, CS1, CS2)
- PB0–PB7 → Data bus (DB0–DB7)
- Generate Code → Open in STM32CubeIDE
Project File Structure
- KS0108.c / KS0108.h – Core driver functions (initialization, pixel control, graphics primitives).
- Fonts11x13.h, Fonts27x28.h – Font libraries for text rendering in multiple sizes.
- IO_Macros.h – GPIO macros to simplify low-level control signals (CS, RS, RW, E, Data bus).
- main.c – Application entry point, user demo logic.
Key Functions
- LCD Initialization:
- KS0108_Init() - Configures timing and startup sequence
- Display Operations:
- KS0108_Clear() - Clears entire display
- KS0108_DrawString() - Renders text at specified position
Components
- STM32F103C6
- KS0108 LCD (128×64, dual-controller)
Connections
- PA0–PA4 → LCD control pins
- PB0–PB7 → LCD data bus
Steps
- Load the compiled .hex file into STM32.
- Run the simulation.
- Observe:
- Text/graphics on KS0108 LCD
If you have any questions or suggestions don’t hesitate to leave a comment below.
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