4a32d32080
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1.7 KiB
1.7 KiB
1.8" TFT Display Setup Guide
Overview
The 1.8" TFT display (128x160) is used as the primary visual interface for the Aniker anchor alarm system. It displays GPS coordinates, anchor status, and alarm conditions.
Display Specifications
Technical Details
- Display Type: TFT LCD
- Resolution: 128x160 pixels
- Interface: SPI
- Controller: ST7735 (typical)
- Viewing Angle: ~160°
- Operating Voltage: 3.3V
- Backlight: LED
- Color Depth: 16-bit (65K colors)
Physical Characteristics
- Screen Size: 1.8 inches diagonal
- Active Area: ~28mm x 35mm
- Module Size: ~34mm x 45mm (approximate)
- Interface: 8-pin connection
Hardware Setup
Power Requirements
- Logic Voltage: 3.3V
- Current Draw: ~100mA with backlight on
- Backlight Control: PWM capable
Pin Connections
-
Power Pins
- VCC → ESP32 3.3V
- GND → ESP32 GND
- BLK → ESP32 GPIO4 (Backlight control)
-
SPI Interface
- SCL → ESP32 GPIO18 (SPI Clock)
- SDA → ESP32 GPIO23 (MOSI)
- RES → ESP32 GPIO21 (Reset)
- DC → ESP32 GPIO22 (Data/Command)
- CS → ESP32 GPIO5 (Chip Select)
Display Orientation
- The display can be mounted in 4 orientations (0°, 90°, 180°, 270°)
- Software configuration available for orientation adjustment
- Default orientation: Portrait (0°)
Software Integration
Basic Configuration
// Example display configuration
let spi = SPIInterface::new(
spi,
gpio23, // MOSI
gpio18, // SCK
gpio5, // CS
gpio22, // DC
gpio21, // RST
);
let display = ST7735::new(
spi,
gpio4, // BLK
false, // is_inverted
160, // height
128, // width
);
Display Layout
The screen is organized into several regions: