Panel ESP32-8048S043C

This is a bare panel device based on a ESP32-S3 processor with 16M Flash and 8M PSRAM Memory in combination with a 800*480px 16 bit color display and touch controller. This panel is supported by the [HomeDing BigDisplay Example]

Here are some pictures. Be aware that there is a very similar panel available with a different number and a different display resolution printed on the back.

ESP32-8048S043C board

ESP32-8048S043C board-back

This board is equipped with:

ESP32-S3 processor
16 MByte Flash in QIO mode
8 MByte PSRAM OPI
4.3 inch, 800 * 480 px Display based on ST7262: 16 bit color, special ESP32-S3 parallel mode The display is supported by the “GFX Library for Arduino”.
Touch Sensor: GT911 on I2C, Address 0x5D
I2C bus using SDA=19, CLK=20
SD Card slot

Arduino Configuration

The ESP32S3 Dev Module (esp32) can be used with the following settings:

JTAG Adapter: Disbled
PSRAM: OPI PSRAM
Flash Mode: QIO 80MHz
Flash Size: 16MByte (128Mbit)
Arduino Runs On: Core 1
Events Runs On: Core 1
USB Mode: Hardware CDC amd JTAG
USB CDC On Boot: Disabled
USB Firmware MSC on Boot: Disabled
Upload Mode: UAT0 / Hardware CDC
Partition Scheme: ___
CPU Frequency: 240MHz
Upload Speed: 921600
Core Debug Level: None
Erase All Flash: Disabled

The one used here is labeled ESP32-8048S043C from http://www.jczn1688.com and available on AliExpress. On the web site you find documentation but be they seem not to fit to the current boards. Some testing was required.

These type of boards are available in various versions with different displays and touchscreen drivers and this example may be adapted to other configurations when required.

Download of files is available at http://www.jczn1688.com/zlxz, Download passwort: jczn1688
https://pan.jczn1688.com/pd/1/ESP32 module/4.3inch_ESP32-8048S043.zip

For the Arduino-CLI the following boardname and build properties can be used:

fqbn = "esp32:esp32:esp32s3"
properties = "JTAGAdapter=default,PSRAM=opi,FlashMode=qio,FlashSize=16M,LoopCore=1,EventsCore=1,USBMode=hwcdc,
  CDCOnBoot=default,MSCOnBoot=default,DFUOnBoot=default,UploadMode=default,PartitionScheme=fatflash,
  CPUFreq=240,UploadSpeed=921600,DebugLevel=none,EraseFlash=none"

env.json configuration

{
  "device": {
    "0": {
      "name": "panel80",
      "title": "Panel 800*480",
      "description": "Panel with 800 px",
      "loglevel": "2",
      "logfile": 2,
      "safemode": "false",
      "homepage": "/board.htm",
      "cache": "etag",
      "i2c-SDA": "19",
      "i2c-SCL": "20"
    }
  },
  "ota": {
    "0": {}
  },
  "ntptime": {
    "on": {
      "zone": "CET-1CEST,M3.5.0,M10.5.0/3"
    }
  },

  "DisplayEsp32panel": {
    "0": {
      "busmode": "RGBPanel",
      "buspins": "45,48,47,21,14,5,6,7,15,16,4,8,3,46,9,1",
      "width": "800",
      "height": "480",
      "color": "x000000",
      "background": "#bbbbbb",
      "lightpin": 2
    }
  },


  "DisplayTouchGT911": {
    "0": {
      "address": "0x5D",
      "width": "800",
      "height": "480",
      "rotation": "0",
      "interruptpin": "-1",
      "resetpin": "38"
    }
  },

  "sd": {
    "0": {
      "cspin": "10"
    }
  },

  "digitalin": {
    "gpio0": {
      "pin": "0",
      "invert": "1"
    }
  }
}

Boot Button

The Boot button is connected to GPIO0 and is used to start the ESP32 into the sketch download mode. Pressing this button will pull the GPIO0 low.

You can use this as a general purpose input button.

Display

The IPS LCD display is supporting a resolution of 800x480 pixels and is based on the ST7262 chip.

It is connected to the processor using 4 control signals and 16 data signals and is designed to use DMA to transfer the display data from RAM to the display.

It supports a 16 bit color depth: 5 bits red, 6 bits green, 5 bits blue

The display setup using the “GFX Library for Arduino” is:

Arduino_ESP32RGBPanel *rgbpanel = new Arduino_ESP32RGBPanel(
    40 /* DE */, 41 /* VSYNC */, 39 /* HSYNC */, 42 /* PCLK */,
    45 /* R0 */, 48 /* R1 */, 47 /* R2 */, 21 /* R3 */, 14 /* R4 */,
    5 /* G0 */, 6 /* G1 */, 7 /* G2 */, 15 /* G3 */, 16 /* G4 */, 4 /* G5 */,
    8 /* B0 */, 3 /* B1 */, 46 /* B2 */, 9 /* B3 */, 1 /* B4 */,

    0 /* hsync_polarity */, 8 /* hsync_front_porch */, 4 /* hsync_pulse_width */, 8 /* hsync_back_porch */,
    0 /* vsync_polarity */, 8 /* vsync_front_porch */, 4 /* vsync_pulse_width */, 8 /* vsync_back_porch */
);

The RAM for the display image is allocated in the PSRAM using 8004002 bytes = 640.000 bytes = 625 kBytes.

Backlight control

The display uses a backlight that can be controlled on through GPIO02.

Touch panel

The touch panel is a capacitive type based on the GT911 chip.

There is a variant of this board available using a resistive touch sensor.

The communication to the GT911 chip is using the i2c bus on address 0x5d.

SD Card

The SD card is available at the standard SPI bus of ESP32. The SD Card Element can be used to extend the filesystem and to mount the sd card file system on the /sd folder.

function	ESP32 pin
CS	GPIO10
SPI-bus	VSPI