TFTLCD.h does not have a header guard (#ifndef #define #endif). Because of this I am unable to use the TFTLCD library from an external .cpp file. (Both the .cpp file and the .ino file have to #include TFTLCD.h in order for the compiler to find it, but when I do so I get errors about duplicate definitions.) I added the header guards myself and now my sketch compiles, but this complicates things for anybody working downstream from me.

I have a program running on a Mega in 8-bit mode writing to the Adafruit 3.5" TFT display with touchscreen.

In the examples for this screen it mentions that the D0-D7 pins are hardcoded to certain pins on the uno and the mega.

Does this library support other boards such as ESP32? I assume all I need to do is change the configuration for the D0-D7 pins. Can you confirm this is the case?

Hi. Is it possible to use this library for 16-bit ILI9325 displays?
What should I change to make it work?

Hi guys, i want to know, how can i change the bus pins for use my tft lcd in arduino Nano.

Thanks :)

Hello,
first of all, thank you for making such a good library.

I tried using the example tftbmp on my arduino mega to display bmp on my screen
(the screen model : https://www.amazon.fr/Kuman-Tactile-Arduino-Module-Fonction/dp/B075CXXL1M/ref=sr_1_1?ie=UTF8&qid=1528549257&sr=8-1&keywords=tft+arduino+uno )

Here's the problem. When I try to upload the code, I get the following error :

TFTLCD-Library-master\Adafruit_TFTLCD.cpp:115:3: error: 'textsize' was not declared in this scope

textsize = 1;

How may I solve it ?

In the constructor
Adafruit_TFTLCD::Adafruit_TFTLCD(uint8_t cs, uint8_t cd, uint8_t wr, uint8_t rd, uint8_t reset)

we see the following lines of code:

  if (reset) {
    digitalWrite(reset, HIGH);
    pinMode(reset, OUTPUT);
  }

Is it valid to be setting the line to HIGH before the pinMode is set? On SAMD51 the default pin mode is INPUT_PULLUP.

I have this library working with the Due, would you be interested in a patch?

`In file included from \Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:19:0:

\Arduino\libraries\Adafruit_TFTLCD_Library\pin_magic.h:282:33: warning: backslash and newline separated by space

#define read8inline(result) { \

                             ^

\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:803:0: warning: "read8" redefined

#define read8(x) x=read8fn()

^

In file included from C:\Users\Patryk\Documents\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:19:0:

\Arduino\libraries\Adafruit_TFTLCD_Library\pin_magic.h:183:0: note: this is the location of the previous definition

#define read8 read8inline

^

\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp: In member function 'void Adafruit_TFTLCD::init()':

\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:115:3: error: 'textsize' was not declared in this scope

textsize = 1;

^

In file included from \Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:19:0:

\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp: In member function 'void Adafruit_TFTLCD::begin(uint16_t)':

\Arduino\libraries\Adafruit_TFTLCD_Library\pin_magic.h:401:21: warning: large integer implicitly truncated to unsigned type [-Woverflow]

hi = (d) >> 8; lo = (d); CD_DATA ; write8(hi); write8(lo); }

                 ^

\Arduino\libraries\Adafruit_TFTLCD_Library\pin_magic.h:187:29: note: in expansion of macro 'writeRegister16inline'

#define writeRegister16 writeRegister16inline

                         ^

\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:283:5: note: in expansion of macro 'writeRegister16'

 writeRegister16(ILI9341_VCOMCONTROL1, 0x2B2B);

 ^

exit status 1
`
My console output when trying to load graphictest

Some methods such as readRegister() are missing in the new commit, which breaks backwards compatibility with older items.

tfpaint:
// D0 connects to digital pin 8
// D1 connects to digital pin 9
#define YM 9
#define XP 8

and

#define YP A3
#define XM A2
#define LCD_CS A3
#define LCD_CD A2

This is needless confusing.

tftbmp:
#define SD_CS 10
#define LCD_CS A3

there is a CS on 8 bit side and a CS on SPI side along with a CSS.
which is it? Very simple to be specific.

//connect the SD card with DI going to pin 11, DO going to pin 12 and SCK going to pin 13
I think you mean mosi, miso, and clk? you know how it says on the board that you produce?

Dear Adafruit,

I am trying to add 8-bit parallel support for your tft 3.5" breakout board. My experience in programming this close to the hardware is limited. I figured out how to directly manipulate the ports of the esp32, but I can't get it to compile. Could anybody help me to finish this?

Help would greatly be appreciated!

• Arduino board: Mega

• Arduino IDE version (found in Arduino -> About Arduino menu): 1.8.9

• List the steps to reproduce the problem below (if possible attach a sketch or
  copy the sketch code in too):

The following code
`#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_TFTLCD.h> // Hardware-specific library

void setup() {
// put your setup code here, to run once:

}

void loop() {
// put your main code here, to run repeatedly:

}`

Gives the following error
`Arduino\libraries\Adafruit_TFTLCD_Library\pin_magic.h:282:33: warning: backslash and newline separated by space

#define read8inline(result) { \

                             ^`

Hi, I'm using the touchscreen breakout board with an Arduino Mega.

In file "tftbmp.pde" it says:
// If using an Arduino Mega, make sure the SD library is configured for
// 'soft' SPI in the file Sd2Card.h.

I didn't do anything to configure the SD library for 'soft' SPI and it still works. A bit of googling suggests that this comment might be outdated.

If true, please remove.

Thanks!

http://forums.adafruit.com/viewtopic.php?f=22&t=56672&p=288957#p288957

The following small diff adds the ability to have a text background color, including the special 0x10000 color which represents transparent background (don't draw on the background) to preserve the existing behavior. For backwards compatibility, the default text background color is initialized as transparent.

diffs are Modified code

% diff ~/Desktop/tftlcd/TFTLCD.h TFTLCD.h
99a100
>   void setTextBGColor(uint32_t c); // 16 bit color but special 0x10000 for transparent.
156a158
>   uint32_t textbgcolor;

% diff ~/Desktop/tftlcd/TFTLCD.cpp TFTLCD.cpp
76a77,80
> void TFTLCD::setTextBGColor(uint32_t c) {
>   textbgcolor = c;
> }
> 
107c111
<   for (uint8_t i =0; i<5; i++ ) {

---
>   for (uint8_t i =0; i<(bicolor == 0x10000 ? 5 : 6); i++ ) {  // No need to run through 6th column if transparent background
108c112
<       uint8_t ine = pgm_read_byte(font+(c*5)+i);

---
>       uint8_t line = (i==5 ? 0 : pgm_read_byte(font+(c*5)+i);
116a121,127
>       else if (textbgcolor != 0x10000) // If not transparent bg color
>       {
>         if (size == 1) // default size
>           drawPixel(x+i, y+j, textbgcolor & 0xffff);
>         else // big size
>           fillRect(x+i*size, y+j*size, size, size, textbgcolor&0xffff);
>       }
669a681
>   textbgcolor = 0x10000;  // Default to transparent

Currently the Sketch doesn't compile for Leonardo compatible boards. From looking through the code there are directives which force support for the older boards.

It looks like all that needs to be done are changing pin assignments. I can make and submit changes, if I can be told what needs to be done.

Cheers, Peenak

I want to do a calculator on my 3.5" TFT Display but this library works with the touchscreen library without failing. Can you please add a driver for that chip?

C:\Program Files (x86)\Arduino\libraries\Adafruit_TFTLCD\pin_magic.h:282:33: warning: backslash and newline separated by space

To get the tftbmp example to work I had to use the LCD_RESET. I could not get it to work otherwise.

The two lines I had to add/modify prior to "void setup()" were

// you can also just connect RESET to the arduino RESET pin
#define LCD_RESET A4

// our TFT wiring
TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);

Sorry if this was not the right place to address this. if there is an appropriate blog, let me know and I'll post it there.

Bob

I am a bit new to this, but am having very hard time finding information, so any help would be appreciated. I want to use TFT LCD ILI9341 with Edison in 8bit mode and compile/build as C++ (my application is already written in C++). I have used Lutz Latta's (Edidoom) library, but it is optimized for all pins being within specific 32bit region, which mine are not currently (and unfortunately).
So my additional restriction is that pins are already assigned and are not in the same DW.
Is this possible with existing libraries? What is necessary? Thank you

My STM32 board doesn't have PB2 pin to use. How can I change the data pins definition??

hi
can it work for mcufriends lcd 3.95 with ili9488?
many thanks

http://www.forums.adafruit.com/viewtopic.php?f=47&t=34406&p=172036
no other reports

ILI9325/8: When values 1 or 3 are passed to function setRotation(), the function setAddrWindow() will produce negative X1 coordinate.
Solution: check y2 value before updating x1
EDIT
I just updated the links and the name of the issue (sorry, I am newbie in handling github functions :) )

Re this thread:
https://forums.adafruit.com/viewtopic.php?f=47&t=172915

Nothing in the preprocessor logic for Nano Every:
https://github.com/arduino/ArduinoCore-megaavr/blob/268fefd7e73cae8c0a0dfc05e114079e69fd0827/boards.txt#L42
so it ends up landing here:

Re this thread:
https://forums.adafruit.com/viewtopic.php?f=22&t=161254
and maybe more things?

• Arduino board: UNO R3
• Arduino IDE version (found in Arduino -> About Arduino menu): 1.8.10
• List the steps to reproduce the problem below (if possible attach a sketch or
  copy the sketch code in too):
  Set board & port.
  Open tftbmp example sketch.
  Compile.

Error log in arduino:

[me]\Documents\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp: In member function 'void Adafruit_TFTLCD::init()':

[me]\Documents\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:115:3: error: 'textsize' was not declared in this scope

textsize = 1;

^~~~~~~~

[me]\Documents\Arduino\libraries\Adafruit_TFTLCD_Library\Adafruit_TFTLCD.cpp:115:3: note: suggested alternative: 'textsize_x'

textsize = 1;

^~~~~~~~

textsize_x

Multiple libraries were found for "SPI.h"
Used: [me]\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.2\libraries\SPI
Multiple libraries were found for "Adafruit_GFX.h"
Used: [me]\Documents\Arduino\libraries\Adafruit_GFX_Library
Multiple libraries were found for "Adafruit_TFTLCD.h"
Used: [me]\Documents\Arduino\libraries\Adafruit_TFTLCD_Library
Multiple libraries were found for "SD.h"
Used: C:\Program
exit status 1
Error compiling for board Arduino Uno.

The arduino error cuts off on the space in "Program Files"?! Wow.

Thank you! Stay awesome!

• Arduino board: Arduino Giga r1 WiFi

• Arduino IDE version (found in Arduino -> About Arduino menu): 2.3.2

• List the steps to reproduce the problem below (if possible attach a sketch or
  copy the sketch code in too): Attempt to upload any sketch containing the ADAFRUIT_TFTLCD library to the giga.

• Issue Description:
  When attempting to use this library on the arduino giga r1 WiFi the uploader/programmer throws many errors. The exit code is 1.

Errors/Warnings:
(Pasted in file below)

Sketch:
Literally any sketch in any form in the IDE containing the library.

If the board is not supported, like some errors point to, It would truly be great if your team could add support for such a capable board. If not however, please explain or point to a library that is capable of using the ILI9341 in 8bit parallel mode on the Giga. Thank you!!
Error Messages.txt

This code demonstrates the problem:

You can also refer to my more complete description of the problem in the adafruit forums where it seems the solution offered by adafruit to any request is merely to ask the poster to go do something else.

http://forums.adafruit.com/viewtopic.php?f=47&t=26204

#include <TFTLCD.h>

// Modify as needed for your configuration
#define LCD_RESET A4
#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
#define LCD_BL 8

#define FACECENTRX 63
#define FACECENTRY 63

TFTLCD lcd(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);

// This should initialize the display and draw a diamond shaped hand rotating around the dial ala a second hand on a clock.
// This example is reduced from an actual clock application to the minimum necessary to replicate the library bug
void setup()
{
  lcd.reset();
  lcd.initDisplay();
  lcd.fillScreen(lcd.Color565(0,0,0));
  lcd.setRotation(2);
  pinMode(LCD_BL, OUTPUT);
  digitalWrite(LCD_BL, HIGH);
  int i;
  while (1)
  {
    for(i=0; i<360; i+=6)
    {
      drawHand(lcd, i, 46, 255,255,255, 10);
      delay(1000);
      drawHand(lcd, i, 46, 0, 0, 0, 10);
    }
  }
}

void drawHand(TFTLCD D2, int a, int d, byte r, byte g, byte b, int width)
{
  float c,w, z;
  int dh_x2, dh_y2;
  int dh_x1, dh_y1;
  unsigned int co;
  float rad;
  co=D2.Color565(r,g,b);
  c = ((a+270)%360); // orient correctly
  z = c = c * PI/180;
  // Draw hands as polygons (fast)
  dh_x1 = cos(c)*d+FACECENTRX; dh_y1 = sin(c)*d+FACECENTRY; // tip of hand
  w=width*PI/180;
  c -= w/2;  // Widen (go counterclockwise w/2 radians (== width/2 degrees)
  rad = d*(d<40 ? 0.6 : 0.8);
  dh_x2 = cos(c)*rad+FACECENTRX; dh_y2 = sin(c)*rad+FACECENTRY; // Counterclockwise wide point
  D2.fillTriangle(FACECENTRX, FACECENTRY, dh_x1, dh_y1, dh_x2, dh_y2, D2.Color565(r, g, b)); // Draw counterclockwise half of hand
  c += w;    // Widen other direction (clockwise w radians == width degrees from counterclockwise edge)
  dh_x2 = cos(c)*rad+FACECENTRX; dh_y2 = sin(c)*rad+FACECENTRY; // Colckwise wide point
  D2.fillTriangle(FACECENTRX, FACECENTRY, dh_x1, dh_y1, dh_x2, dh_y2, D2.Color565(r, g, b)); // Draw clockwise half of hand
}

void loop()
{
}

I have successfully used my Adafruit 3.5" 320x480 Color TFT Touchscreen Breakout with my Arduino Leonardo and Micro boards. I would like to use it with my new Genuino 101 board which uses an Intel processor and has different pin definitions. I have attempted to implement it myself but haven't succeeded yet.

del

I encountered an issue using the graphicstest sketch with an ILI9341 controller.

If readID() is called directly after reset() ( as the graphicstest sketch does )
the ILI9341 does not have enough time to properly reset before readID() is called.
In my case this caused an erroneous id of: 0xC0C0 to be reported.
Adding a delay of 2 ms. between readID() and reset() resolves this issue.

Rather than modifying each sketch, a better solution would of course be to add the
delay to the reset() function within Adafruit_TFTLCD.cpp as follows:

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void Adafruit_TFTLCD::reset(void) {

CS_IDLE;
// CD_DATA;
WR_IDLE;
RD_IDLE;

ifdef USE_ADAFRUIT_SHIELD_PINOUT

digitalWrite(5, LOW);
delay(2);
digitalWrite(5, HIGH);

else

if(_reset) {
digitalWrite(_reset, LOW);
delay(2);
digitalWrite(_reset, HIGH);
}

endif

delay(2);       // add delay here

// Data transfer sync
CS_ACTIVE;
CD_COMMAND;
write8(0x00);
for(uint8_t i=0; i<3; i++) WR_STROBE; // Three extra 0x00s
CS_IDLE;
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Cheers,
Russ

Hi I'm new for arduino and I use arduino mega 2560 with tftlcd 2.4 with shield but after I test the program this code is show.

C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\Adafruit_TFTLCD.cpp:933:0: warning: "read8" redefined
#define read8(x) x = read8fn()

In file included from C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\Adafruit_TFTLCD.cpp:17:0:
C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\pin_magic.h:230:0: note: this is the location of the previous definition
#define read8 read8inline

C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\Adafruit_TFTLCD.cpp: In member function 'void Adafruit_TFTLCD::begin(uint16_t)':
C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\pin_magic.h:533:12: warning: large integer implicitly truncated to unsigned type [-Woverflow]
lo = (d);
^
C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\pin_magic.h:234:25: note: in expansion of macro 'writeRegister16inline'
#define writeRegister16 writeRegister16inline
^~~~~~~~~~~~~~~~~~~~~
C:\Users\Administrator\Documents\Arduino\libraries\TFTLCD-Library-1.0.3\Adafruit_TFTLCD.cpp:352:5: note: in expansion of macro 'writeRegister16'
writeRegister16(ILI9341_VCOMCONTROL1, 0x2B2B);
^~~~~~~~~~~~~~~

And it can still upload to board but the screen not show anything.
Please ask for advice.

When i use RTC.now() the screen reset!
A4 A5 arduino pin use for tiny RTC
how should i solve thia

Im new to Arduino and library's. I use the library and the demo work fine my question is there a document with all the commands?

Thanks

Johann

http://forums.adafruit.com/viewtopic.php?f=22&t=59908&p=303056#p303056