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.
- When the post-remapped coordinates exceed screen bounds, `getTouch()` was returning a "valid" status without updating the coordinates. This would result in spurious touch detection events at the screen boundaries.
- The fix ensures that the return value is set to "invalid" in this boundary condition.
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.
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
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.
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
