Hi,
I recently got a new GC9A01 display, but I haven’t been able to get it working with an ESP32S3.
I found a really helpful guide by Mark Lucking HERE but even following that, I still couldn’t get it to work. Here’s what I’ve managed so far:
----- Code
#include <TFT_eSPI.h>
#include <SPI.h>
#define USE_TFT_ESPI_LIBRARY
#include “lv_xiao_round_screen.h”
lv_coord_t touchX, touchY;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
pinMode(TOUCH_INT, INPUT_PULLUP);
Wire.begin();
// Initialise the screen
tft.init();
tft.setRotation(0);
tft.fillScreen(TFT_BLACK);
}
void loop() {
//put your main code here, to run repeatedly:
if(chsc6x_is_pressed())
{
Serial.println(“The display is touched.”);
chsc6x_get_xy(&touchX, &touchY);
tft.drawCircle(touchX, touchY, 15, TFT_WHITE);
}
delay(500);
}
------ TFT_eSPI User_Setup
#define USER_SETUP_INFO “User_Setup”
#define GC9A01_DRIVER
#define TFT_HEIGHT 240 // GC9A01 240 x 240
#define TFT_CS PIN_D8 // Chip select control pin D8
#define TFT_DC PIN_D3 // Data Command control pin
#define TFT_RST PIN_D4 // Reset pin (could connect to NodeMCU RST, see next line)
// Use an Arduino pin for initial testing as connecting to processor reset
// may not work (pulse too short at power up?)
#define LOAD_GLCD // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
#define LOAD_FONT2 // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
#define LOAD_FONT4 // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
#define LOAD_FONT6 // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm
#define LOAD_FONT7 // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:-.
#define LOAD_FONT8 // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.
#define LOAD_GFXFF // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts
#define SMOOTH_FONT
#define SPI_FREQUENCY 27000000
#define SPI_READ_FREQUENCY 20000000
#define SPI_TOUCH_FREQUENCY 2500000
------- TFT_eSPI User Setup Select
#ifndef USER_SETUP_LOADED // Lets PlatformIO users define settings in
// platformio.ini, see notes in “Tools” folder.
#include <User_Setups/Setup66_XIAO_Round_Expansion.h> // Setup file for XIAO serial with GC9A01
#endif // USER_SETUP_LOADED
#define TFT_BGR 0 // Colour order Blue-Green-Red
#define TFT_RGB 1 // Colour order Red-Green-Blue
#define PIN_D0 16 // GPIO16 WAKE
#define PIN_D1 5 // GPIO5 User purpose
#define PIN_D2 4 // GPIO4 User purpose
#define PIN_D3 0 // GPIO0 Low on boot means enter FLASH mode
#define PIN_D4 2 // GPIO2 TXD1 (must be high on boot to go to UART0 FLASH mode)
#define PIN_D5 14 // GPIO14 HSCLK
#define PIN_D6 12 // GPIO12 HMISO
#define PIN_D7 13 // GPIO13 HMOSI RXD2
#define PIN_D8 15 // GPIO15 HCS TXD0 (must be low on boot to enter UART0 FLASH mode)
#define PIN_D9 3 // RXD0
#define PIN_D10 1 // TXD0
#define PIN_MOSI 8 // SD1 FLASH and overlap mode
#define PIN_MISO 7 // SD0
#define PIN_SCLK 6 // CLK
#define PIN_HWCS 0 // D3
#define PIN_D11 9 // SD2
#define PIN_D12 10 // SD4
--------- Libraries
Using library TFT_eSPI at version 2.5.22 in folder: C:\Users\user\Documents\Arduino\libraries\TFT_eSPI
Using library SPI at version 2.0.0 in folder: C:\Users\user\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.11\libraries\SPI
Using library Wire at version 2.0.0 in folder: C:\Users\user\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.11\libraries\Wire
Using library FS at version 2.0.0 in folder: C:\Users\user\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.11\libraries\FS
Using library SPIFFS at version 2.0.0 in folder: C:\Users\user\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.11\libraries\SPIFFS
Using library Seeed Arduino Round display at version 1.0.0 in folder: C:\Users\user\Documents\Arduino\libraries\Seeed_Arduino_Round_display
Using library lvgl at version 8.3.4 in folder: C:\Users\user\Documents\Arduino\libraries\lvgl
Some other info
ESP32 Chip model = ESP32-S3 Rev 0
This chip has 2 cores
Chip ID: 7773948
PJ 
