Una disculpa colega @Surbyte en mi caso el codillo es un hello word para el tft:
#include <Arduino_GFX_Library.h>
#include <Arduino_GFX.h>
#include <lvgl.h>
#define GFX_BL DF_GFX_BL // default backlight pin, you may replace DF_GFX_BL to actual backlight pin
#define TFT_BL 2
/* More dev device declaration: https://github.com/moononournation/Arduino_GFX/wiki/Dev-Device-Declaration */
#if defined(DISPLAY_DEV_KIT)
Arduino_GFX *gfx = create_default_Arduino_GFX();
#else /* !defined(DISPLAY_DEV_KIT) */
/* More data bus class: https://github.com/moononournation/Arduino_GFX/wiki/Data-Bus-Class */
//Arduino_DataBus *bus = create_default_Arduino_DataBus();
/* More display class: https://github.com/moononournation/Arduino_GFX/wiki/Display-Class */
//Arduino_GFX *gfx = new Arduino_ILI9341(bus, DF_GFX_RST, 0 /* rotation */, false /* IPS */);
Arduino_ESP32RGBPanel *bus = new Arduino_ESP32RGBPanel(
GFX_NOT_DEFINED /* CS */, GFX_NOT_DEFINED /* SCK */, GFX_NOT_DEFINED /* SDA */,
41 /* DE */, 40 /* VSYNC */, 39 /* HSYNC */, 42 /* PCLK */,
14 /* R0 */, 21 /* R1 */, 47 /* R2 */, 48 /* R3 */, 45 /* R4 */,
9 /* G0 */, 46 /* G1 */, 3 /* G2 */, 8 /* G3 */, 16 /* G4 */, 1 /* G5 */,
15 /* B0 */, 7 /* B1 */, 6 /* B2 */, 5 /* B3 */, 4 /* B4 */
);
// option 1:
// 7寸 50PIN 800*480
Arduino_RPi_DPI_RGBPanel *gfx = new Arduino_RPi_DPI_RGBPanel(
bus,
// 800 /* width */, 0 /* hsync_polarity */, 8/* hsync_front_porch */, 2 /* hsync_pulse_width */, 43/* hsync_back_porch */,
// 480 /* height */, 0 /* vsync_polarity */, 8 /* vsync_front_porch */, 2/* vsync_pulse_width */, 12 /* vsync_back_porch */,
// 1 /* pclk_active_neg */, 16000000 /* prefer_speed */, true /* auto_flush */);
800 /* width */, 0 /* hsync_polarity */, 210 /* hsync_front_porch */, 30 /* hsync_pulse_width */, 16 /* hsync_back_porch */,
480 /* height */, 0 /* vsync_polarity */, 22 /* vsync_front_porch */, 13 /* vsync_pulse_width */, 10 /* vsync_back_porch */,
1 /* pclk_active_neg */, 16000000 /* prefer_speed */, true /* auto_flush */);
#endif /* !defined(DISPLAY_DEV_KIT) */
/*******************************************************************************
* End of Arduino_GFX setting
******************************************************************************/
void setup(void)
{
gfx->begin();
gfx->fillScreen(BLACK);
#ifdef TFT_BL
pinMode(TFT_BL, OUTPUT);
digitalWrite(TFT_BL, HIGH);
#endif
gfx->setCursor(10, 10);
gfx->setTextColor(RED);
gfx->println("Hello World!");
delay(2000); // 5 seconds
}
void loop()
{
gfx->setCursor(random(gfx->width()), random(gfx->height()));
gfx->setTextColor(random(0xffff), random(0xffff));
gfx->setTextSize(random(6) /* x scale */, random(6) /* y scale */, random(2) /* pixel_margin */);
gfx->println("Hello World!");
delay(1000); // 1 second
}
Y el error que estoy obteniendo es el siguiente:
lcd_panel.rgb: esp_lcd_new_rgb_panel(151): no mem for frame buffer
ESP_ERROR_CHECK failed: esp_err_t 0x101 (ESP_ERR_NO_MEM) at 0x4037a84c
file: “/Users/luisdiaz/Documents/Arduino/libraries/Arduino_GFX-master/src/databus/Arduino_ESP32RGBPanel.cpp” line 252
func: uint16_t* Arduino_ESP32RGBPanel::getFrameBuffer(uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, uint16_t, int32_t)
expression: esp_lcd_new_rgb_panel(_panel_config, &_panel_handle)
abort() was called at PC 0x4037a84f on core 1
Este lo leo desde el serial monitor en el cual claramente hace referencia a la librería Arduino_GFX
saludos 
