Pico_DM_QD3503728 Template

This is a template project that you can use to port various GUI libraries, such as lvgl.

Getting started

Here is an example showing how to invoke the display function.

#include "ili9488.h"

    ili9488_driver_init();
    
    /* void ili9488_fill(uint16_t color); */
    ili9488_fill(0x0000);

#define CUBE_X_SIZE (LCD_HOR_RES / 3 * 2)
#define CUBE_Y_SIZE (LCD_VER_RES / 3 * 2)
    static uint16_t video_memory[CUBE_X_SIZE * CUBE_Y_SIZE] = {0};
    memset(video_memory, (rand() % 255), sizeof(video_memory));
    
    /* void ili9488_video_flush(int xs, int ys, int xe, int ye, void *vmem16, uint32_t len); */
    ili9488_video_flush(
        LCD_HOR_RES / 2 - (CUBE_X_SIZE / 2),
        LCD_VER_RES / 2 - (CUBE_Y_SIZE / 2),
        LCD_HOR_RES / 2 + (CUBE_X_SIZE / 2) - 1,
        LCD_VER_RES / 2 + (CUBE_Y_SIZE / 2) - 1,
        video_memory, sizeof(video_memory)
    );

And of course, touch.

#include "ft6236.h"

ft6236_driver_init();

/* 
 * bool ft6236_is_pressed(void);
 * uint16_t ft6236_read_x(void);
 * uint16_t ft6236_read_y(void);
 */
if (ft6236_is_pressed())
    printf("pressed at (%d, %d)\n", ft6236_read_x(), ft6236_read_y());

Technical specifications

Part	Model
Core Board	Rasberrypi Pico
Display	3.5' 480x320 ILI9488 no IPS
	16-bit 8080 50MHz
TouchScreen	3.5' FT6236 capacity touch

Pinout

Left	Right
GP0/DB0	VBUS
GP1/DB1	VSYS
GND	GND
GP2/DB2	3V3_EN
...	...

ILI9488 Display pins

• GP0 ~ GP15 -> ILI9488 DB0-DB15 16 pins

• GP18 -> ILI9488 CS (Chip select)

• GP19 -> ILI9488 WR (write signal)

• GP20 -> ILI9488 RS (Register select, Active Low, 0: cmd, 1: data)

• GP22 -> ILI9488 Reset (Active Low)

• GP28 -> IlI9488 Backlight (Active High)

FT6236 Touch pins

• GP18 -> FT6236 Reset (Active Low)

• GP21 -> FT6236 IRQ (Active Low, 100Hz sample rate)

• GP26 -> FT6236 SDA (I2C1_SDA)

• GP27 -> FT6236 SCL (I2C1_SCL)