Boost performance for ILI9488 display with STM32 processors.
Enable smooth fonts in setup files (smooth fonts for STM32 processors is now supported with fonts in program memory)
Typical use to disable use of PSRAM for the sprite storage:
sprite.setAttribute(PSRAM_ENABLE, false); // true to enable
Minor update for recent button class update
Added 24 bit colour handling alphaBlend to reduce precision loss in multiple blend stages (e.g. in 2D colour gradients). Added option for alpha dither to reduce colour banding in gradients with 16 bit colours.
Get rid of compile warnings.
The library has been cleaned up as it has got a bit untidy due to the large number of small incremental changes.
4bit Sprite examples renaed to be consistent with others.
alphaBlend example moved to generic folder (alphaBlend fn was moved to TFT_eSPI class).
Added sections + explanatory comments to functions prototypes.
Temporary comments added for potential gotchas for noobs when using DMA.
spi_begin/end functions renamed to reflect functionality. Old fns retained for backwards compatibility with user setup.h files.
Callback allows anitaliased fonts to be rendered over colour gradients
or images.
"Smooth_font_reading_TFT" example added
"Smooth_font_gradient" example added
Minor changes to avoid signed/unsigned comparison warnings.
Images/sprites overlapping both sides of the display were not correctly
cropped.
Option added to allow RGB<>BGR colourr swap option to be used.
ESP8266 Wemos D1 R1 pin numbering difference accomodated.
TTGO T4 setup changed to use HSPI port.
Corrected font 2 rendering issue #402
Corrected NULL pointer issue #400
Changed grave ` character (key for this character is left of numeral 1
key) to degree symbol in font 2
Change setup24 so DC pin is not D3
Added SD card storage for smooth fonts with ESP32
ESP32 will use PSRAM (if available and enabled) to hold smooth font
metrics
Improve performance of ESP32 Sprite shared functions
Add basic ST7789 driver option
Latent bug fixes for pin mask
Pixel function used wrong width and height for bounds check.
Remove String variable in smooth font code (not used)
Correct ESP8266UncannyEyes example for new setAddrWindow parameters
The touch screen handler was broken for the ESP8266 only. The library
uses SPI write only configuration for ESP8266 so the SPI buffer can be
recycled and it was left in write only mode. The library now switches
back to read & write mode at the end of a transaction.
Adafruit_GFX font support extended to Unidode Basic Multilingual Plane
Print stream deocdes UTF-8
Smooth font ascent and descent (affects line spacing) changed to rely on
metrics provided by Processing IDE (issue #303)
Bug fix for font rendering with no background on RLE native fonts
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
Speed up Sprite rotation on an ESP32
Update utf8 serial decoder to handle illegal format strings
Remove need for D0_USED_FOR_xx (issue #271)
Clean up setup files
Correct various comment typos
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.
Added new function that sketch can call to convert raw ADC x and y
values to calibrated screen coordinates:
tft.convertRawXY(&x, &y);
Redunced required number of SPI transfers needed to read raw values.
Changed mode so PENIRQ pin is enabled so users sketch can read this
signal (if needed).
See issue #279.
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
Bodmer