ESP32-S3-ES3C28P Board Support Package (BSP)

Board Support Package for the 2.8-inch ESP32-S3 Display Development Board (ES3C28P/ES3N28P).

Overview

The ESP32-S3-ES3C28P is a comprehensive development board featuring a 2.8-inch IPS TFT display with optional capacitive touch screen, designed for embedded GUI applications, IoT devices, and multimedia projects.

Features

• Main Controller: ESP32-S3 (Dual-core Xtensa LX7 @ 240MHz)
• Memory:
  • 512KB SRAM
  • 8MB PSRAM
  • 16MB external SPI Flash
• Display:
  • 2.8-inch IPS TFT LCD
  • Resolution: 240×320 pixels
  • Driver IC: ILI9341V
  • Interface: 4-Line SPI
  • Brightness: 280 cd/m²
• Touch Screen (ES3C28P variant):
  • Capacitive touch
  • Driver IC: FT6336G
  • Interface: I2C
• Connectivity:
  • WiFi 2.4GHz (802.11b/g/n)
  • Bluetooth 5.0 (BR/EDR and BLE)
• Interfaces:
  • MicroSD card slot (SDIO 4-bit)
  • Audio I2S (speaker output + microphone input)
  • RGB LED (WS2812B)
  • USB Type-C (programming and power)
  • UART, I2C expansion interfaces
  • Battery connector (3.7V Li-Po with charging circuit)
• Audio:
  • Codec: ES8311
  • Amplifier: FM8002E
  • MEMS Microphone
  • Speaker connector (1.5W/8Ω or 2W/4Ω)

Pin Mapping

LCD (ILI9341V)

Function	GPIO	Description
CS	IO10	Chip select (active low)
DC	IO46	Data/Command select
SCK	IO12	SPI clock
MOSI	IO11	SPI data out
MISO	IO13	SPI data in
RST	RST	Reset (shared with ESP32-S3)
BL	IO45	Backlight control

Touch Screen (FT6336G)

Function	GPIO	Description
SDA	IO16	I2C data
SCL	IO15	I2C clock
RST	IO18	Touch reset
INT	IO17	Touch interrupt

SD Card (SDIO)

Function	GPIO	Description
CLK	IO38	SDIO clock
CMD	IO40	SDIO command
D0	IO39	Data line 0
D1	IO41	Data line 1
D2	IO48	Data line 2
D3	IO47	Data line 3

Audio (I2S)

Function	GPIO	Description
AMP_EN	IO1	Amplifier enable (active low)
MCLK	IO4	Master clock
BCLK	IO5	Bit clock
DOUT	IO6	Data output (to speaker)
LRCK	IO7	Left/Right clock
DIN	IO8	Data input (from mic)

Other Peripherals

Function	GPIO	Description
RGB LED	IO42	WS2812B LED
BOOT	IO0	Boot mode button
UART0 TX	IO44	Debug UART
UART0 RX	IO43	Debug UART
Battery ADC	IO9	Battery voltage sense
Expansion	IO2/3/14/21	General purpose I/O

Hardware Specifications

ESP32-S3 Parameters

• CPU: Xtensa LX7 dual-core @ 240MHz
• ROM: 384KB
• SRAM: 512KB + 16KB RTC SRAM
• PSRAM: 8MB (internal OPI)
• Flash: 16MB (external SPI)
• Operating Voltage: 3.0-3.6V

Display Parameters

• Size: 2.8 inch
• Type: IPS TFT
• Resolution: 240×320 pixels
• Colors: 262K (RGB666) / 65K (RGB565)
• Driver: ILI9341V
• Interface: 4-wire SPI
• Backlight: 4× white LEDs
• Operating Temp: -30°C to +80°C

Touch Screen Parameters

• Type: Capacitive
• Driver: FT6336G
• Interface: I2C
• Operating Temp: -30°C to +80°C

Power Specifications

• Operating Voltage: 5V (USB Type-C)
• Backlight Current: 79mA
• Display Only: ~140mA
• Full Operation: ~560mA (display + speaker + charging)
• Battery: 3.7V Li-Po (with TP4054 charging IC)
• Charging Current: Max 500mA, Typical 290mA

BSP Components

This BSP provides the following components:

Core Headers

• bsp/esp32_s3_es3c28p.h - Main BSP header
• bsp/esp-bsp.h - Common BSP definitions
• bsp/config.h - Board configuration
• bsp/display.h - Display interface
• bsp/touch.h - Touch interface

Source Files

Located in src/ directory:

• Display driver implementation
• Touch controller interface
• SD card support
• Audio codec configuration
• Board initialization routines

Dependencies

• ESP-IDF: >= 5.4
• esp_lcd_ili9341: ^2.0.1 (LCD driver)
• esp_lcd_touch_ft5x06: ^1.0.7 (Touch driver)
• esp_codec_dev: ~1.5 (Audio codec)
• esp_lvgl_port: ^2 (LVGL graphics library)

Usage

Basic Initialization

#include "bsp/esp32_s3_es3c28p.h"

void app_main(void)
{
    // Initialize the board
    bsp_init();
    
    // Initialize display
    bsp_display_start();
    
    // Initialize touch (if available)
    bsp_touch_start();
    
    // Your application code here
}

Display Control

#include "bsp/display.h"

// Get display handle
esp_lcd_panel_handle_t lcd = bsp_display_get_handle();

// Backlight control
bsp_display_backlight_on();
bsp_display_backlight_off();
bsp_display_brightness_set(50); // 0-100%

Touch Input

#include "bsp/touch.h"

// Read touch coordinates
uint16_t x, y;
bool touched = bsp_touch_get_coordinates(&x, &y);
if (touched) {
    printf("Touch at: %d, %d\n", x, y);
}

Configuration Options

Configuration options are available through menuconfig:

idf.py menuconfig

Navigate to: Component config → Board Support Package (BSP)

Product Variants

• ES3C28P: With capacitive touch screen
• ES3N28P: Without touch screen

Both variants share the same pinout and features except for touch functionality.

Documentation

For detailed information, refer to:

• Full Documentation: https://www.lcdwiki.com/2.8inch_ESP32-S3_Display
• Hardware Schematic: Available in documentation package
• User Manual: See product documentation
• Example Code: ESP-IDF examples included in data package

Physical Dimensions

• Product Size: 50.00mm (W) × 86.00mm (H) × 10.60mm (D) with touch
• Product Size: 50.00mm (W) × 86.00mm (H) × 9.10mm (D) without touch
• Weight:
  • ES3C28P: 111g
  • ES3N28P: 100g

Additional Resources

Development Environment

• Arduino IDE support
• MicroPython support
• ESP-IDF support (recommended)

Example Projects

• LVGL GUI demos
• Audio playback/recording
• Image/video display
• Touch input handling
• SD card file operations
• WiFi/Bluetooth connectivity

License

Please refer to the LICENSE file in the component directory.

Technical Support

For technical support and questions:

• Email: Lcdwiki@163.com
• Email: goodtft@163.com
• Wiki: https://www.lcdwiki.com/

Version

Current BSP Version: 0.1.0

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Note: This BSP is designed for ESP-IDF 5.4 and later. For older ESP-IDF versions, please check compatibility or use the appropriate driver versions.