Note

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SPI ST7789 Example

Overview

This sample shows the full flow for driving an ST7789 LCD panel through the RT-Smart HAL.

Source Location

src/rtsmart/examples/peripheral/spi_st7789

Current Demo Behavior

The main() function performs these steps:

1. configure FPIOA and SPI pins

2. create the LCD instance with SPI plus DC/RST/BL GPIO control

3. initialize the ST7789 panel

4. clear the screen and draw three colored strings

5. show the frame for 5 seconds, then exit

Main APIs (following the current source)

• lcd_create()

• lcd_configure()

• lcd_init()

• lcd_fill()

• lcd_draw_string()

• lcd_show()

• lcd_destroy()

Default Pins and Parameters (hard-coded in the source)

Use the default pin mapping and SPI-related parameters defined in the sample source unless your board requires changes.

Build Method

cd src/rtsmart/examples/peripheral/spi_st7789
make

Run Example

Run the built executable on the target board after copying it to the device.

Notes

If your board uses a different panel connection or pin mapping, update the source before building.