Supports Adafruit_GFX compatible font format with characters in the range 32-255.
Note that the font rendering functions expect UTF-8 encoded characters/strings.
There is a bug in the ESP8266 Arduino core that averwrites the overlap
mode setup and hold bits for the hardware driven SPI SS line. The
TFT_eSPI library has been patched as a work-around.
In overlap mode to maintain the required setup and hold times at 80MHz
ESP8266 CPU clock the SPI rate must be 27MHz or less. At 160MHz CPU
clock the SPI rate can be 40MHz.
Add bounds checking to graphics functions
Rationalise variable types and style used to minimse type casting needs
(this change ended up being a more extensive refactoring than
anticipated - but once started...)
Add version reporting to diagnostic sketch
Boost PDQ graphicstest performance
If the VSPI port is in use and pins are not accessible (e.g. TTGO
T-Beam)
then add or uncomment the following line in the setup header file:
//#define USE_HSPI_PORT
Minor performance tweaks for ESP32 to minimise the occurence of the slow
transaction overhead.
setAddrWindow now takes xstart, ystart, width and height as inputs
Multi-sample raw touch x and y for noisy displays
Example update for setAddrWindow change compatibility
Sprites can be rendered rotated with defined pivot points, 3 new
examples have been added "Rotated_Sprite_1/2/3".
The FLASH bitmap example has been moved to the Generic examples folder.
Boundary checks have been added to pushImage()
A new scrolling and wrapping in a Sprite example has been added.
Fixed bug where wrong wodth was returned for 1bpp Sprite
Improved speed for copying a 1bpp Sprite into another 1bpp Sprite (
affects Sprite pushImage() function only)
Added option to setup for colour inversion
Tested on ESP32 and ST7789V display only. It may not work with other
displays!
Use:
#define TFT_SDA_READ
in setup file to use bi-directional SDA pin support.
Tested on an ESP32 with ST7789V display
SDA read is very slow on an ESP8266 (to be investigated)
Added new setup #define TFT_SDA_READ
Add new ESP32 and ESP8266 compatible in example/Generic folder to test
capture of TFT screen
Remove legacy changes for double buffered SPI
Eliminate unecessary ESP32 SPI read/modify write
Eliminate two stage control bit changes (may impact some diplays with
setup/hold timing and show ESP32 hardware register bug?)
Add single register write for CS and DC command
Make setAddrWindow smarter (as used in previous AVR library)
Improve compatibility with GFX sketches
Re-arrange comments slightly to improve positioning
Four new examples have been added to show different methods of rendering
the anta-aliased fonts. A few minor bugs have been corrected associated
with the font rendering. drawNumber and drawFloat handle fixed width
mono fonts with no digit movement.
Use line is form:
tft.init(1);
or:
tft.init(INITR_REDTAB);
// Enumerated the configurations in library are:
#define INITR_GREENTAB
0x0
#define INITR_REDTAB 0x1
#define INITR_BLACKTAB 0x2
#define
INITR_GREENTAB2 0x3 // Use if you get random pixels on two edges of
green tab display
#define INITR_GREENTAB3 0x4 // Use if you get random
pixels on edge(s) of 128x128 screen
#define INITR_GREENTAB128 0x5 // Use
if you only get part of 128x128 screen in rotation 0 & 1
#define INITB
0xB
Also added ability to push 1bpp bitmaps to a Sprite to support rendering
images on an EPaper screen.
Floyd-Steinberg dithering and basic graphics example added as first
ePaper demo.
This is stage one of support for ePaper displays from Waveshare.
Examples for 1 bit per pixel Sprites and 2 or 3 colour ePaper displays
to follow soon.
Add interface driver macro
Add 8 bit parallel support
Add 8 bit parallel read support
Add ILI9481, ILI9488 and HX8357D drivers
Update version and ReadMe
Update Create_Font processing sketch
Add slightly narrower alternative font 8
1. Ability to swap bytes in pushColors() and pushImage()
2. pushImage() will handle FLASH stroed images
3. pushImage() will accept a transparent color
4. pushRect() deprecated but still works
5. setSwapBytes() to set swapping bytes in color for pushImage() and
pushColors() true or false
6. getSwapBytes() returns swap bytes parameter
7. fillCircle() and fillCircleHelper() changed to use horizontal lines
to speed up plotting in a sprite
8. fillTriangle bug fix by moving spi_begin()
9 Small performance improvement to setAddrWindow()
10. pushColor() bug fix for swapped bytes
11. pushColors() performance improvement for ESP8266 and add optional
byte swap parameter, accepts higher pixel count
12. move spi_begin() later in drawLine() incase fn returns early
13. add spi_end() in drawLine incdae return occurs early
14. Add color332() fn to convert 16 bit to 8 bit colour
15. Sprite: createSprite() checks if sprite already created and returns
pointer if it does
16. Sprite: one extra "off-screen pixel added to a sprite to point
out-of-bounds setWindow coords to
this avoids extra bounds checks in push/write color
17. Sprite: setColorDepth allows changing of depthe for existing sprtie
and returns a new pointer to the new sprite
18. Sprite: pushImage() accepts a swapped byte parameter
19. Sprite: setSwapBytes() to set swapping bytes in color for
pushImage() and pushColors() true or false
20. Sprite: getSwapBytes() returns swap bytes parameter
21. Sprite: setWindow deals with duff out of sprite coords.
22. Sprite: bug in draw char corrected which could draw too many
over-writing pixels
getTouch accepts a third optional pressure threshold, default is 600,
increasing means harder presses are needed.
getTouch(uint16_t *x, uint16_t *y, uint16_t threshold = 600);
Can now specify a colour that will not be plotted so some part of the
Sprite are "transparent" and the TFT backforund shows through. New
example added for demonstration.
This commit fixes an issue when setting screen width
and height from the constructor (e.g., user sketch),
followed by setRotation(i). Previously, setRotation
used TFT_WIDTH and TFT_HEIGHT, ignoring user overrides.
Sprites (images) can now be created in RAM, written to with text and
graphics and rendered to screen quickly, this makes it easier to get
flicker frre screen updates.
ESP8266 can typically create up to a 160x128 sprite, and ESP32 about
200x200 pixels. 16 bit colour only at the moment, may soon implement 8
bit colour to reduce RAM.
Touch reliability improved by using pressure and double sampling. Added
Adafruit compatible Button class. Added touchscreen on/off and keypad
examples.
Grabbing the mutex for exclusive SPI access by the TFT library causes a
crash when OTA updates are done. Always switching the hal mutex is only
marginally slower so that is now the default.
Using D6 (MISO) for the DC line is not recommended as transaction support and TFT reads may cause it to become and input!
However if a hardware setup has no other pins spare, then this is an option that can be tried.
Bodmer