WIO Terminal blank screen

Products & Technology Wio Terminal
#1

I am having issues with two just received wio terminal units. First of all the game loaded when units came in yesterday work. I have having trouble with example programs display not showing anything when trying to display tft.fillScreen(TFT_RED) or any color. The only thing that works is black light on and off. The programs compiles and upload with no errors. Any example to show on the screen doesn’t work just a black screen.

Thanks
Manny

#2

Can you share your test code? I think I can help you.

#3

Thanks, I figured the problem was bad arduino IDE. Tried on different computer and all worked.

Thanks

1 Like
#4

Manny, I to have the same problem but in my case running the code on a different computer and operating system made no difference. do you know why your change of system made the Wio Terminal work.
I first ran the example blink sketch and the blue LED did blink as expected but when I ran the folowing example code from the Wiki nothing was displayed on the screen.
#include"TFT_eSPI.h"
TFT_eSPI tft;
void setup() {
tft.begin();
tft.setRotation(3);
tft.fillScreen(TFT_RED); // fills entire the screen with colour red
}

void loop() {
 
}

Any ideas?
John

#6

Hi @jasea

Please check your libraries, there may be a conflict libraries for this matter

#7

Anson, I have found the problem. In the Wiki it says that the LCD Libraries are included inside the Wio Terminal board Library. This I proved to be correct as I installed the Wio Terminal on an Arduino IDE with no libraries added, and the first test sample in the Wiki worked and the screen turned red. I also downloaded the Seed_Arduino_LCD library and found that it contained a number of libraries that I had installed in the IDE. As the code uses the # include with the double quotes, I would have thought the local files would have been used in preference to the files in the Library folder. At the moment it looks like I will need two installations of the IDE one for my normal TFT applications and one for Wio Terminal.

#8

John, I am running windows 10 and most current version of Arduino IDE. Both WIO Terminals work on my desktop computer with no issues. I have a blank screen on both WIO Terminals when using my laptop and a working program using LCD display running off my desktop. I have loaded Arduino IDE several time on the laptop with no change always have blank screen compiling program on laptop. The only difference I notice using laptop after uploading program to WIO it always ask me on a pop up what to do with drive G: I don’t have a drive G nor do I have a SD card plugged in WIO. Still I have no idea why WIO screen is blank using laptop.

#9

I found the fix on my laptop. I removed the TFT_eSPI library from Arduino library folder and everything worked fine.

Manny

4 Likes
#10

I’m using 32-bit Windows 7. I downloaded and installed the latest version of Arduino and did not install any additional libraries (only Wio Terminal 1.7.9 Lib).
I also downloaded and installed the Windows driver from here.

Now when uploading code with Arduino on Wio, the screen turns black and Wio enters the bootloader mode. where is the problem from ?
I removed the Arduino completely several times but the problem was not solved.

My problem is similar to @mizapata
Has anyone tested on Windows 7?

PS: The interesting thing is that after a failed upload and after restarting, wio automatically enters the bootloader indefinitely!
The problem is solved only when the firmware is re-installed on the device.

#11

https://github.com/Seeed-Studio/Signed_USB_Serial_Driver/releases/download/1.0.3/Seeed_USB_Serial_Driver-1.0.3.zip @blizzard For Windows 7 you may need to install this driver.

2 Likes
#12

Thanks @Baozhu , but I tested with v1.0.3, the problem could not be solved.

#13

first time i plug in my wio terminal the screen was good and then i started to connect to Arduino ide i did my code and was okay. afterwards i tried again my screen not showing anything and even the boot up interface also not showing , itried with different computer also still the same. what should i do? anyone help me…urgent

#14

Can you show me your code？

#15

Hi folks- I’m having a similar issue with my new Wio Terminal for a hobby project (building a squirrel squirter that recognizes squirrels and shoots them with a water gun). I used my MacBook to flash the Wio to RTL8720 but it just displays “Burn RTL8720fw” and I’m unable to upload a sketch.

Instead I get the error message pasted below. I’d really appreciate any help/guidance that the community has to offer. (I also posted this q on Discord; hoping I’m not spamming the community!). THANK YOU!

Arduino: 1.8.19 (Mac OS X), Board: “Seeeduino Wio Terminal, Master, Enabled, 120 MHz (standard), Small (-Os) (standard), 50 MHz (standard), Arduino, Off, On”
Sketch uses 57368 bytes (11%) of program storage space. Maximum is 507904 bytes.
java.io.IOException: Cannot run program “/Users/oliver/Library/Arduino15/packages/Seeeduino/tools/bossac/1.8.0-48-gb176eee/bossac”: error=13, Permission denied

#16

You can try running the

chmod +x {file path}

command in Terminal on macOS. This will open up permissions on the path file.

1 Like
#17

thank You! it working!

#18

Following up and hoping for a bit of help getting my Wio Terminal and Grove Vision sensor up and running. I’ve uploaded a custom model to the Grove Vision sensor. And I ran the object_detection sketch included in the Grove AI examples and it compiled and uploaded fine. But the screen on my Wio Terminal remains black.

A simple sketch like this works fine, though:

#include “TFT_eSPI.h”

TFT_eSPI tft;

void setup() {

tft.begin();

tft.setRotation(3);

tft.fillScreen(TFT_YELLOW);

tft.drawLine(0,0, 100,100, TFT_BLACK);

}

void loop() {

// put your main code here, to run repeatedly:

}

#19

Hello, could you post your content of the TFT_eSPI.h file?

#20

Thanks so much for helping to troubleshoot. Here’s the TFT_eSPI.h file:

/***************************************************

Arduino TFT graphics library targeted at ESP8266

and ESP32 based boards.

This is a standalone library that contains the

hardware driver, the graphics functions and the

proportional fonts.

The larger fonts are Run Length Encoded to reduce

their FLASH footprint.

****************************************************/

// Stop fonts etc being loaded multiple times

#ifndef TFT_eSPIH

#define TFT_eSPIH

#define TFT_ESPI_VERSION “1.6.1”

// Include header file that defines the fonts loaded, the TFT drivers

// available and the pins to be used

#include <User_Setup_Select.h>

#ifndef TAB_COLOUR

#define TAB_COLOUR 0

#endif

// If the frequency is not defined, set a default

#ifndef SPI_FREQUENCY

#define SPI_FREQUENCY 20000000

#endif

// If the frequency is not defined, set a default

#ifndef SPI_READ_FREQUENCY

#define SPI_READ_FREQUENCY SPI_FREQUENCY

#endif

#if defined(ST7789_DRIVER) || defined(ST7789_2_DRIVER)

#define TFT_SPI_MODE SPI_MODE3

#else

#define TFT_SPI_MODE SPI_MODE0

#endif

// If the frequency is not defined, set a default

#ifndef SPI_TOUCH_FREQUENCY

#define SPI_TOUCH_FREQUENCY 2500000

#endif

// Use GLCD font in error case where user requests a smooth font file

// that does not exist (this is a temporary fix to stop ESP32 reboot)

#ifdef SMOOTH_FONT

#ifndef LOAD_GLCD

#define LOAD_GLCD

#endif

#endif

// Only load the fonts defined in User_Setup.h (to save space)

// Set flag so RLE rendering code is optionally compiled

#ifdef LOAD_GLCD

#include <Fonts/glcdfont.c>

#endif

#ifdef LOAD_FONT2

#include <Fonts/Font16.h>

#endif

#ifdef LOAD_FONT4

#include <Fonts/Font32rle.h>

#define LOAD_RLE

#endif

#ifdef LOAD_FONT6

#include <Fonts/Font64rle.h>

#ifndef LOAD_RLE

#define LOAD_RLE

#endif

#endif

#ifdef LOAD_FONT7

#include <Fonts/Font7srle.h>

#ifndef LOAD_RLE

#define LOAD_RLE

#endif

#endif

#ifdef LOAD_FONT8

#include <Fonts/Font72rle.h>

#ifndef LOAD_RLE

#define LOAD_RLE

#endif

#elif defined LOAD_FONT8N

#define LOAD_FONT8

#include <Fonts/Font72x53rle.h>

#ifndef LOAD_RLE

#define LOAD_RLE

#endif

#endif

#include <Arduino.h>

#include <Print.h>

#ifdef KENDRYTE_K210

#include <avr/pgmspace.h>

#include <SPIClass.h>

#else

#include <avr/pgmspace.h>

#include <SPI.h>

#endif

#ifdef SMOOTH_FONT

#include <Seeed_FS.h>

#include “SD/Seeed_SD.h”

#endif

// chip select signal for touchscreen

#ifndef TOUCH_CS

#define T_CS_L // No macro allocated so it generates no code

#define T_CS_H // No macro allocated so it generates no code

#else

#define T_CS_L digitalWrite(TOUCH_CS, LOW)

#define T_CS_H digitalWrite(TOUCH_CS, HIGH)

#endif

#ifdef TFT_WR

#define WR_L // No macro allocated so it generates no code

#define WR_H // No macro allocated so it generates no code

#else

#define WR_L digitalWrite(TFT_WR, LOW)

#define WR_H digitalWrite(TFT_WR, HIGH)

#endif

#define SPI_32(H, L) ((H) << 16 | (L))

#define COL_32(H, L) ((H) << 16 | (L))

#if defined(ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB

// Write 8 bits to TFT

#define tft_Write_8(C) _com.transfer(C)

// Convert 16 bit colour to 18 bit and write in 3 bytes

#define tft_Write_16(C) \

_com.transfer((C & 0xF800) >> 8); \

_com.transfer((C & 0x07E0) >> 3); \

_com.transfer((C & 0x001F) << 3)

// Convert swapped byte 16 bit colour to 18 bit and write in 3 bytes

#define tft_Write_16S(C) \

_com.transfer(C & 0xF8);                             \

_com.transfer((C & 0xE000) >> 11 | (C & 0x07) << 5); \

_com.transfer((C & 0x1F00) >> 5)

// Write 32 bits to TFT

#define tft_Write_32(C) _com.transfer((void *)C, 4)

#elif defined(RPI_ILI9486_DRIVER)

#define tft_Write_8(C) \

_com.transfer(0);  \

_com.transfer(C)

#define tft_Write_16(C) _com.transfer((void *)C, 2)

#define tft_Write_16S(C) _com.transfer((void *)(C << 8 | C >> 8), 2)

#define tft_Write_32(C) _com.transfer((void *)C, 4)

#else

#define tft_Write_8(C) _com.transfer(C)

#define tft_Write_16(C) _com.transfer16(C);

#define tft_Write_32(C) \

_com.transfer(C >> 24);              \

_com.transfer((C & 0xFFFFFF) >> 16); \

_com.transfer((C & 0xFFFF) >> 8);    \

_com.transfer(C & 0xFF);

#endif

#define tft_Read_8() _com.transfer(0)

#ifdef LOAD_GFXFF

// We can include all the free fonts and they will only be built into

// the sketch if they are used

#include <Fonts/GFXFF/gfxfont.h>

// Call up any user custom fonts

#include <User_Setups/User_Custom_Fonts.h>

// Original Adafruit_GFX “Free Fonts”

#include <Fonts/GFXFF/TomThumb.h> // TT1

#include <Fonts/GFXFF/FreeMono9pt7b.h> // FF1 or FM9

#include <Fonts/GFXFF/FreeMono12pt7b.h> // FF2 or FM12

#include <Fonts/GFXFF/FreeMono18pt7b.h> // FF3 or FM18

#include <Fonts/GFXFF/FreeMono24pt7b.h> // FF4 or FM24

#include <Fonts/GFXFF/FreeMonoOblique9pt7b.h> // FF5 or FMO9

#include <Fonts/GFXFF/FreeMonoOblique12pt7b.h> // FF6 or FMO12

#include <Fonts/GFXFF/FreeMonoOblique18pt7b.h> // FF7 or FMO18

#include <Fonts/GFXFF/FreeMonoOblique24pt7b.h> // FF8 or FMO24

#include <Fonts/GFXFF/FreeMonoBold9pt7b.h> // FF9 or FMB9

#include <Fonts/GFXFF/FreeMonoBold12pt7b.h> // FF10 or FMB12

#include <Fonts/GFXFF/FreeMonoBold18pt7b.h> // FF11 or FMB18

#include <Fonts/GFXFF/FreeMonoBold24pt7b.h> // FF12 or FMB24

#include <Fonts/GFXFF/FreeMonoBoldOblique9pt7b.h> // FF13 or FMBO9

#include <Fonts/GFXFF/FreeMonoBoldOblique12pt7b.h> // FF14 or FMBO12

#include <Fonts/GFXFF/FreeMonoBoldOblique18pt7b.h> // FF15 or FMBO18

#include <Fonts/GFXFF/FreeMonoBoldOblique24pt7b.h> // FF16 or FMBO24

// Sans serif fonts

#include <Fonts/GFXFF/FreeSans9pt7b.h> // FF17 or FSS9

#include <Fonts/GFXFF/FreeSans12pt7b.h> // FF18 or FSS12

#include <Fonts/GFXFF/FreeSans18pt7b.h> // FF19 or FSS18

#include <Fonts/GFXFF/FreeSans24pt7b.h> // FF20 or FSS24

#include <Fonts/GFXFF/FreeSansOblique9pt7b.h> // FF21 or FSSO9

#include <Fonts/GFXFF/FreeSansOblique12pt7b.h> // FF22 or FSSO12

#include <Fonts/GFXFF/FreeSansOblique18pt7b.h> // FF23 or FSSO18

#include <Fonts/GFXFF/FreeSansOblique24pt7b.h> // FF24 or FSSO24

#include <Fonts/GFXFF/FreeSansBold9pt7b.h> // FF25 or FSSB9

#include <Fonts/GFXFF/FreeSansBold12pt7b.h> // FF26 or FSSB12

#include <Fonts/GFXFF/FreeSansBold18pt7b.h> // FF27 or FSSB18

#include <Fonts/GFXFF/FreeSansBold24pt7b.h> // FF28 or FSSB24

#include <Fonts/GFXFF/FreeSansBoldOblique9pt7b.h> // FF29 or FSSBO9

#include <Fonts/GFXFF/FreeSansBoldOblique12pt7b.h> // FF30 or FSSBO12

#include <Fonts/GFXFF/FreeSansBoldOblique18pt7b.h> // FF31 or FSSBO18

#include <Fonts/GFXFF/FreeSansBoldOblique24pt7b.h> // FF32 or FSSBO24

// Serif fonts

#include <Fonts/GFXFF/FreeSerif9pt7b.h> // FF33 or FS9

#include <Fonts/GFXFF/FreeSerif12pt7b.h> // FF34 or FS12

#include <Fonts/GFXFF/FreeSerif18pt7b.h> // FF35 or FS18

#include <Fonts/GFXFF/FreeSerif24pt7b.h> // FF36 or FS24

#include <Fonts/GFXFF/FreeSerifItalic9pt7b.h> // FF37 or FSI9

#include <Fonts/GFXFF/FreeSerifItalic12pt7b.h> // FF38 or FSI12

#include <Fonts/GFXFF/FreeSerifItalic18pt7b.h> // FF39 or FSI18

#include <Fonts/GFXFF/FreeSerifItalic24pt7b.h> // FF40 or FSI24

#include <Fonts/GFXFF/FreeSerifBold9pt7b.h> // FF41 or FSB9

#include <Fonts/GFXFF/FreeSerifBold12pt7b.h> // FF42 or FSB12

#include <Fonts/GFXFF/FreeSerifBold18pt7b.h> // FF43 or FSB18

#include <Fonts/GFXFF/FreeSerifBold24pt7b.h> // FF44 or FSB24

#include <Fonts/GFXFF/FreeSerifBoldItalic9pt7b.h> // FF45 or FSBI9

#include <Fonts/GFXFF/FreeSerifBoldItalic12pt7b.h> // FF46 or FSBI12

#include <Fonts/GFXFF/FreeSerifBoldItalic18pt7b.h> // FF47 or FSBI18

#include <Fonts/GFXFF/FreeSerifBoldItalic24pt7b.h> // FF48 or FSBI24

#endif // #ifdef LOAD_GFXFF

//These enumerate the text plotting alignment (reference datum point)

#define TL_DATUM 0 // Top left (default)

#define TC_DATUM 1 // Top centre

#define TR_DATUM 2 // Top right

#define ML_DATUM 3 // Middle left

#define CL_DATUM 3 // Centre left, same as above

#define MC_DATUM 4 // Middle centre

#define CC_DATUM 4 // Centre centre, same as above

#define MR_DATUM 5 // Middle right

#define CR_DATUM 5 // Centre right, same as above

#define BL_DATUM 6 // Bottom left

#define BC_DATUM 7 // Bottom centre

#define BR_DATUM 8 // Bottom right

#define L_BASELINE 9 // Left character baseline (Line the ‘A’ character would sit on)

#define C_BASELINE 10 // Centre character baseline

#define R_BASELINE 11 // Right character baseline

// New color definitions use for all my libraries

#define TFT_BLACK 0x0000 /* 0, 0, 0 */

#define TFT_NAVY 0x000F /* 0, 0, 128 */

#define TFT_DARKGREEN 0x03E0 /* 0, 128, 0 */

#define TFT_DARKCYAN 0x03EF /* 0, 128, 128 */

#define TFT_MAROON 0x7800 /* 128, 0, 0 */

#define TFT_PURPLE 0x780F /* 128, 0, 128 */

#define TFT_OLIVE 0x7BE0 /* 128, 128, 0 */

#define TFT_LIGHTGREY 0xC618 /* 192, 192, 192 */

#define TFT_DARKGREY 0x7BEF /* 128, 128, 128 */

#define TFT_BLUE 0x001F /* 0, 0, 255 */

#define TFT_GREEN 0x07E0 /* 0, 255, 0 */

#define TFT_CYAN 0x07FF /* 0, 255, 255 */

#define TFT_RED 0xF800 /* 255, 0, 0 */

#define TFT_MAGENTA 0xF81F /* 255, 0, 255 */

#define TFT_YELLOW 0xFFE0 /* 255, 255, 0 */

#define TFT_WHITE 0xFFFF /* 255, 255, 255 */

#define TFT_ORANGE 0xFDA0 /* 255, 180, 0 */

#define TFT_GREENYELLOW 0xB7E0 /* 180, 255, 0 */

#define TFT_PINK 0xFC9F

// Next is a special 16 bit colour value that encodes to 8 bits

// and will then decode back to the same 16 bit value.

// Convenient for 8 bit and 16 bit transparent sprites.

#define TFT_TRANSPARENT 0x0120

// Swap any type

template

static inline void

swap_coord(T &a, T &b)

{

T t = a;

a = b;

b = t;

}

#ifndef min

// Return minimum of two numbers, may already be defined

#define min(a, b) (((a) < (b)) ? (a) : (b))

#endif

// This structure allows sketches to retrieve the user setup parameters at runtime

// by calling getSetup(), zero impact on code size unless used, mainly for diagnostics

typedef struct

{

String version = TFT_ESPI_VERSION;

int16_t esp;

uint8_t trans;

uint8_t serial;

uint8_t overlap;

uint16_t tft_driver; // Hexadecimal code

uint16_t tft_width;  // Rotation 0 width and height

uint16_t tft_height;

uint8_t r0_x_offset; // Offsets, not all used yet

uint8_t r0_y_offset;

uint8_t r1_x_offset;

uint8_t r1_y_offset;

uint8_t r2_x_offset;

uint8_t r2_y_offset;

uint8_t r3_x_offset;

uint8_t r3_y_offset;

int8_t pin_tft_mosi;

int8_t pin_tft_miso;

int8_t pin_tft_clk;

int8_t pin_tft_cs;

int8_t pin_tft_dc;

int8_t pin_tft_rd;

int8_t pin_tft_wr;

int8_t pin_tft_rst;

int8_t pin_tft_d0;

int8_t pin_tft_d1;

int8_t pin_tft_d2;

int8_t pin_tft_d3;

int8_t pin_tft_d4;

int8_t pin_tft_d5;

int8_t pin_tft_d6;

int8_t pin_tft_d7;

int8_t pin_tch_cs;

int16_t tft_spi_freq;

int16_t tft_rd_freq;

int16_t tch_spi_freq;

} setup_t;

// This is a structure to conveniently hold information on the default fonts

// Stores pointer to font character image address table, width table and height

// Create a null set in case some fonts not used (to prevent crash)

const uint8_t widtbl_null[1] = {0};

PROGMEM const uint8_t chr_null[1] = {0};

PROGMEM const uint8_t *const chrtbl_null[1] = {chr_null};

typedef struct

{

const uint8_t *chartbl;

const uint8_t *widthtbl;

uint8_t height;

uint8_t baseline;

} fontinfo;

// Now fill the structure

const PROGMEM fontinfo fontdata[] = {

#ifdef LOAD_GLCD

{(const uint8_t *)font, widtbl_null, 0, 0},

#else

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#endif

// GLCD font (Font 1) does not have all parameters

{(const uint8_t *)chrtbl_null, widtbl_null, 8, 7},

#ifdef LOAD_FONT2

{(const uint8_t *)chrtbl_f16, widtbl_f16, chr_hgt_f16, baseline_f16},

#else

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#endif

// Font 3 current unused

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#ifdef LOAD_FONT4

{(const uint8_t *)chrtbl_f32, widtbl_f32, chr_hgt_f32, baseline_f32},

#else

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#endif

// Font 5 current unused

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#ifdef LOAD_FONT6

{(const uint8_t *)chrtbl_f64, widtbl_f64, chr_hgt_f64, baseline_f64},

#else

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#endif

#ifdef LOAD_FONT7

{(const uint8_t *)chrtbl_f7s, widtbl_f7s, chr_hgt_f7s, baseline_f7s},

#else

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0},

#endif

#ifdef LOAD_FONT8

{(const uint8_t *)chrtbl_f72, widtbl_f72, chr_hgt_f72, baseline_f72}

#else

{(const uint8_t *)chrtbl_null, widtbl_null, 0, 0}

#endif

};

// Class functions and variables

class TFT_eSPI : public Print

{

public:

TFT_eSPI(int16_t _W = TFT_WIDTH, int16_t _H = TFT_HEIGHT);

void init(uint8_t tc = TAB_COLOUR),

     begin(uint8_t tc = TAB_COLOUR); // Same - begin included for backwards compatibility

#if defined(TFT_BL)

void setBacklight(uint32_t backlight);

uint32_t backlight();

#endif

// These are virtual so the TFT_eSprite class can override them with sprite specific functions

virtual void drawPixel(int32_t x, int32_t y, uint32_t color),

    drawChar(int32_t x, int32_t y, uint16_t c, uint32_t color, uint32_t bg, uint8_t size),

    drawLine(int32_t x0, int32_t y0, int32_t x1, int32_t y1, uint32_t color),

    drawFastVLine(int32_t x, int32_t y, int32_t h, uint32_t color),

    drawFastHLine(int32_t x, int32_t y, int32_t w, uint32_t color),

    fillRect(int32_t x, int32_t y, int32_t w, int32_t h, uint32_t color);

virtual int16_t drawChar(uint16_t uniCode, int32_t x, int32_t y, uint8_t font),

    drawChar(uint16_t uniCode, int32_t x, int32_t y),

    height(void),

    width(void);

// The TFT_eSprite class inherits the following functions

void setWindow(int32_t xs, int32_t ys, int32_t xe, int32_t ye),

    pushColor(uint16_t color),

    pushColor(uint16_t color, uint32_t len),

    pushColors(uint16_t *data, uint32_t len, bool swap = true), // With byte swap option

    pushColors(uint8_t *data, uint32_t len),

    fillScreen(uint32_t color);

void drawRect(int32_t x, int32_t y, int32_t w, int32_t h, uint32_t color),

    drawRoundRect(int32_t x0, int32_t y0, int32_t w, int32_t h, int32_t radius, uint32_t color),

    fillRoundRect(int32_t x0, int32_t y0, int32_t w, int32_t h, int32_t radius, uint32_t color),

    setRotation(uint8_t r),

    invertDisplay(boolean i),

    drawCircle(int32_t x0, int32_t y0, int32_t r, uint32_t color),

    drawCircleHelper(int32_t x0, int32_t y0, int32_t r, uint8_t cornername, uint32_t color),

    fillCircle(int32_t x0, int32_t y0, int32_t r, uint32_t color),

    fillCircleHelper(int32_t x0, int32_t y0, int32_t r, uint8_t cornername, int32_t delta, uint32_t color),

    drawEllipse(int16_t x0, int16_t y0, int32_t rx, int32_t ry, uint16_t color),

    fillEllipse(int16_t x0, int16_t y0, int32_t rx, int32_t ry, uint16_t color),

    drawTriangle(int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint32_t color),

    fillTriangle(int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint32_t color),

    drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color),

    drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color),

    drawXBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t fgcolor, uint16_t bgcolor),

    setBitmapColor(uint16_t fgcolor, uint16_t bgcolor), // For 1bpp sprites

    setPivot(int16_t x, int16_t y),

    setCursor(int16_t x, int16_t y),

    setCursor(int16_t x, int16_t y, uint8_t font),

    setTextColor(uint16_t color),

    setTextColor(uint16_t fgcolor, uint16_t bgcolor),

    setTextSize(uint8_t size),

    setTextWrap(boolean wrapX, boolean wrapY = false),

    setTextDatum(uint8_t datum),

    setTextPadding(uint16_t x_width),

#ifdef LOAD_GFXFF

    setFreeFont(const GFXfont *f = NULL),

    setTextFont(uint8_t font),

#else

    setFreeFont(uint8_t font),

    setTextFont(uint8_t font),

#endif

    spiwrite(uint8_t),

    writecommand(uint8_t c),

    writedata(uint8_t d),

    commandList(const uint8_t *addr);

uint8_t readcommand8(uint8_t cmd_function, uint8_t index = 0);

uint16_t readcommand16(uint8_t cmd_function, uint8_t index = 0);

uint32_t readcommand32(uint8_t cmd_function, uint8_t index = 0);

// Read the colour of a pixel at x,y and return value in 565 format

uint16_t readPixel(int32_t x0, int32_t y0);

// The next functions can be used as a pair to copy screen blocks (or horizontal/vertical lines) to another location

// Read a block of pixels to a data buffer, buffer is 16 bit and the array size must be at least w * h

void readRect(int32_t x0, int32_t y0, int32_t w, int32_t h, uint16_t *data);

// Write a block of pixels to the screen

void pushRect(int32_t x0, int32_t y0, int32_t w, int32_t h, uint16_t *data);

// These are used to render images or sprites stored in RAM arrays

void pushImage(int32_t x0, int32_t y0, int32_t w, int32_t h, uint16_t *data);

void pushImage(int32_t x0, int32_t y0, int32_t w, int32_t h, uint16_t *data, uint16_t transparent);

// These are used to render images stored in FLASH (PROGMEM)

void pushImage(int32_t x0, int32_t y0, int32_t w, int32_t h, const uint16_t *data, uint16_t transparent);

void pushImage(int32_t x0, int32_t y0, int32_t w, int32_t h, const uint16_t *data);

// These are used by pushSprite for 1 and 8 bit colours

void pushImage(int32_t x0, int32_t y0, int32_t w, int32_t h, uint8_t *data, bool bpp8 = true);

void pushImage(int32_t x0, int32_t y0, int32_t w, int32_t h, uint8_t *data, uint8_t transparent,

               bool bpp8 = true);

// Swap the byte order for pushImage() - corrects endianness

void setSwapBytes(bool swap);

bool getSwapBytes(void);

// This next function has been used successfully to dump the TFT screen to a PC for documentation purposes

// It reads a screen area and returns the RGB 8 bit colour values of each pixel

// Set w and h to 1 to read 1 pixel's colour. The data buffer must be at least w * h * 3 bytes

void readRectRGB(int32_t x0, int32_t y0, int32_t w, int32_t h, uint8_t *data);

uint8_t getRotation(void),

    getTextDatum(void),

    color16to8(uint16_t color565); // Convert 16 bit colour to 8 bits

int16_t getCursorX(void),

    getCursorY(void);

int16_t getPivotX(void),

    getPivotY(void);

uint16_t fontsLoaded(void),

    color565(uint8_t red, uint8_t green, uint8_t blue), // Convert 8 bit red, green and blue to 16 bits

    color8to16(uint8_t color332);                       // Convert 8 bit colour to 16 bits

int16_t drawNumber(long long_num, int32_t poX, int32_t poY, uint8_t font),

    drawNumber(long long_num, int32_t poX, int32_t poY),

    drawFloat(float floatNumber, uint8_t decimal, int32_t poX, int32_t poY, uint8_t font),

    drawFloat(float floatNumber, uint8_t decimal, int32_t poX, int32_t poY),

    // Handle char arrays

    drawString(const char *string, int32_t poX, int32_t poY, uint8_t font),

    drawString(const char *string, int32_t poX, int32_t poY),

    drawCentreString(const char *string, int32_t dX, int32_t poY,

                     uint8_t font), // Deprecated, use setTextDatum() and drawString()

    drawRightString(const char *string, int32_t dX, int32_t poY,

                    uint8_t font), // Deprecated, use setTextDatum() and drawString()

    // Handle String type

    drawString(const String &string, int32_t poX, int32_t poY, uint8_t font),

    drawString(const String &string, int32_t poX, int32_t poY),

    drawCentreString(const String &string, int32_t dX, int32_t poY,

                     uint8_t font), // Deprecated, use setTextDatum() and drawString()

    drawRightString(const String &string, int32_t dX, int32_t poY,

                    uint8_t font); // Deprecated, use setTextDatum() and drawString()

int16_t textWidth(const char *string, uint8_t font),

    textWidth(const char *string),

    textWidth(const String &string, uint8_t font),

    textWidth(const String &string),

    fontHeight(int16_t font),

    fontHeight(void);

void setAddrWindow(int32_t xs, int32_t ys, int32_t w, int32_t h);

// Compatibility additions

void startWrite(void);                         // Begin SPI transaction

void writeColor(uint16_t color, uint32_t len); // Write colours without transaction overhead

void endWrite(void);                           // End SPI transaction

uint16_t decodeUTF8(uint8_t *buf, uint16_t *index, uint16_t remaining);

uint16_t decodeUTF8(uint8_t c);

size_t write(uint8_t);

#ifdef TFT_SDA_READ

#if defined(ESP8266) && defined(TFT_SDA_READ)

uint8_t tft_Read_8(void);

#endif

void begin_SDA_Read(void);

void end_SDA_Read(void);

#endif

// Set or get an arbitrary library attribute or configuration option

void setAttribute(uint8_t id = 0, uint8_t a = 0);

uint8_t getAttribute(uint8_t id = 0);

void getSetup(setup_t &tft_settings); // Sketch provides the instance to populate

static SPIClass &getSPIinstance(void);

int32_t cursor_x, cursor_y, padX;

uint32_t textcolor, textbgcolor;

uint32_t bitmap_fg, bitmap_bg;

uint8_t textfont, // Current selected font

    textsize,     // Current font size multiplier

    textdatum,    // Text reference datum

    rotation;     // Display rotation (0-3)

int16_t _xpivot; // x pivot point coordinate

int16_t _ypivot; // x pivot point coordinate

uint8_t decoderState = 0; // UTF8 decoder state

uint16_t decoderBuffer;   // Unicode code-point buffer

private:

inline void com_begin() __attribute__((always_inline));

inline void com_end() __attribute__((always_inline));

inline void com_begin_read() __attribute__((always_inline));

inline void com_end_read() __attribute__((always_inline));

void readAddrWindow(int32_t xs, int32_t ys, int32_t w, int32_t h);

uint8_t tabcolor,

    colstart = 0, rowstart = 0; // some ST7735 displays need this changed

volatile uint32_t *dcport, *csport;

uint32_t cspinmask, dcpinmask, wrpinmask, sclkpinmask;

uint32_t lastColor = 0xFFFF;

protected:

int32_t win_xe, win_ye;

int32_t _init_width, _init_height; // Display w/h as input, used by setRotation()

int32_t _width, _height;           // Display w/h as modified by current rotation

int32_t addr_row, addr_col;

uint32_t _backlight;

uint32_t fontsloaded;

uint8_t glyph_ab, // glyph delta Y (height) above baseline

    glyph_bb;     // glyph delta Y (height) below baseline

bool isDigits;              // adjust bounding box for numbers to reduce visual jiggling

bool textwrapX, textwrapY;  // If set, 'wrap' text at right and optionally bottom edge of display

bool _swapBytes;            // Swap the byte order for TFT pushImage()

bool locked, inTransaction; // Transaction and mutex lock flags for ESP32

bool _booted; // init() or begin() has already run once

bool _cp437;  // If set, use correct CP437 charset (default is ON)

bool _utf8;   // If set, use UTF-8 decoder in print stream 'write()' function (default ON)

uint32_t _lastColor; // Buffered value of last colour used

#ifdef LOAD_GFXFF

GFXfont *gfxFont;

#endif

// Load the Touch extension

#ifdef TOUCH

#include “Extensions/Touch.h”

#endif

// Load the Anti-aliased font extension

#ifdef SMOOTH_FONT

#include “Extensions/Smooth_font.h”

#endif

}; // End of class TFT_eSPI

// Load the Button Class

#include “Extensions/Button.h”

// Load the Sprite Class

#include “Extensions/Sprite.h”

#endif

#21

FWIW it’s located in my Arduino/libraries/Seeed_Arduino_LCD folder. I also have a LGFX_TFT_eSPI.h file located in a different directory (Desktop/LovyanGFX/src ). It has this code:

#pragma once

#ifdef __cplusplus

#include “LGFX_TFT_eSPI.hpp”

#else

#error LovyanGFX requires a C++ compiler, please change file extension to .cc or .cpp

#endif