All the examples work and the basis is solid connections, do spare time to make them (it takes many hours, but without it nothing will work).

The connections should be made straight from A to B with the wires in the protective sleeves, the factory ones are the best, and then it will work.

TSDesktop

Touch Screen Desktop for Raspberry Pi Pico.

• https://www.youtube.com/watch?v=2_8hvvxUR1c

Supported protocols:

WRITE:

• 4 wire SPI 8x bit, 8bit parallel

	SPI	SPI-DMA	8BIT-GPIO
RP2040	Yes	Yes	Yes
ESP32	Yes	Yes	Yes
PIC32	Yes	No	No
STM32	Yes	No	No

• 4 wire SPI 8x bit, 8bit parallel

	PIO-SPI	PIO-SPI-DMA	8BIT-PIO	8BIT-PIO-DMA
RP2040	Yes	Yes	Yes	Yes

• 4 wire SPI 18 bit - not implemented yet
  

• 16 bit parallel - not implemented yet
  

READ:

• 4 wire SPI 8x bit, 8bit parallel

	SPI	8BIT-GPIO
RP2040	Yes	Yes
ESP32	Yes	No
PIC32	Yes	No
STM32	Yes	No

	PIO-SPI	8BIT-PIO
RP2040	Yes	No

TOUCH:

• 4 wire SPI xpt2046, parallel ?bit attached resistive=spfd5408 ?

	SPI	8BIT-GPIO
RP2040	Yes	Yes
ESP32	Yes	Yes
PIC32	Yes	No
STM32	Yes	No

	PIO-SPI	8BIT-PIO
RP2040	Yes	No

News

Managed to run the "'Boing' ball demo" example from TFT_eSPI repository.

rp2040 pio spi: https://youtube.com/shorts/ybj2CijIc5c

rp2040 pio spi dma: https://youtube.com/shorts/P7c8Ng4fuoM but something is wrong here.

And finally, it works. https://youtube.com/shorts/PkozJCYlWfs

The key elements turned out to be the bus control procedures: setBUSWriteMode and setBUSReadMode and switching BUS (PIO machine exactly) for writing from 8-bits (command mode) to 16-bit (color mode).

• Smooth graphics

• TFT_eSPI.h

  With this stuff TFT_eSPI examples can be run with (almost) NO changes

• Gradient modernization finished, see idyll example.

• The default Overlaid setting has been commented out so that it doesn't get in the way.

• rp2350 pio compatibility

• ESP32 8bit parallel

• idyll example https://youtube.com/shorts/_ApTCePhjv4

• spider example https://youtube.com/shorts/JbAyZdpuKMw

• fill gradient modernization - not finshed yet

• BufferedDisplay, graphics modernization, quadraball example https://youtube.com/shorts/xA41QBkwiz4

• esp32 support

• pic32 support

• Resistive touch was misinterpreted

• Touch over PIO SPI

• More sensitive touch for Arduino SPI

• Touch rotation has been finally mastered. One of the touch_??? procedure from Touch_Rotation.hh is responsible for touch rotation. If none of the available procedures work properly, we have two options:

  1. if one of the procedures could be suitable but has the same deviation in all 4 cases, we can correct it using the TOUCH_REV parameter.
  2. Define another routine for touch rotation.

• Resistive touch for RP2040 GPIO 8BITP, ATTENTION: pinout changed

• Chunks in PIO

• A new protocol: RP2040 GPIO 8BITP write/read (enable LCD_RD pin)

• RP2040 PIO SPI RAED finally works with RP2040 PIO SPI WRITE protocol

• RP2040 PIO 8BITP Write protocol, developed for buffered writing and speed now

• Writing by PIO and reading by SPI work now together in Arduino only, the touch needs to be commented out

• User setups in setup folder

• Buffered canvas - see canvas3 example

• New repository https://github.com/rspber/TSD_Fonts

• New repository https://github.com/rspber/TFT_eSPI_light

• TFT write/read and touch protocols were separated from each other and from gfx

• A new RP2040 PIO SPI WRITE protocol

• Available TFT drivers:

  • GC9A01
  • HX8357
  • ILI9341
  • ILI9481
  • ILI9486
  • ILI9488
  • R61581
  • RM68140
  • SSD1963
  • ST7789
  • ST7796

• Overlaid objects

  GFXButton's objects can 'flow' over others thanks to setOverlaid property. The method is to remember the background when drawing the object 'draw' and recreate it when hiding the object 'hide'. See examples canvas1 and canvas2. It is an uresolved problem when several overlaid objects overlap.

Topics on this site

• BufferedDisplay

  • BufferedDisplay is like a window on full sizes, abstract, not existing in this moment, screen
  • Drawing in window refers to absolute positions of full sizes screen
  • What remains on the window after this drawing depends on its position during this drawing

• TSDesktop

  • easy way to place objects on the screen: all examples
  • integrated touch screen: almost all examples
  • scroller: see examples: scroll1, menu1, menu2, menu3

• TFT Stack (TSD_GFX -> TSD_SCREEN -> TFT_SCREEN(TFT_API) -> Display) to easy implement protocols and drivers for tft

• Modified gamma for ILI9341 to reflect better color vibrancy.

• 565/666 color support

• Gradient with percentage

  • see examples: canvas1, menu3, checkboxes

• Flexible font format

  • visit https://github.com/rspber/TSD_Fonts repository

• UTF-8/Unicode Support

  Although utf-8/unicode fonts are not included, see https://github.com/rspber/TSD_Fonts for more details.

  When the correct font with UTF-8 encoding is included in the code, use the following scheme to deliver utf-8 text:

    display.drawText(x, y, "\xc4\x85\xc4\xb2", FontName);
  

  or

    textBtn.setStaticText("\xc4\x85\xc4\xb2");
  

  and for unicode:

    const uint16_t buf[] { 0x4E00, 0x3007, 0 };
    display.drawText(x, y, buf, FontName);
  

  or

    textBtn.setStaticText(buf);
  

  remember to end the construction with a 0.

• Thickness parameter for lines, rectangles, triangles and circles

pico-sdk

1. No other libraries are required,

2. Install CMake (at least version 3.13), and GCC cross compiler

• Fedora

  sudo dnf install cmake gcc-c++ arm-none-eabi-gcc-cs-c++ arm-none-eabi-newlib
  

• Ubuntu

  sudo apt install cmake g++ gcc-arm-none-eabi libnewlib-arm-none-eabi libstdc++-arm-none-eabi-newlib
  

3. Install pico-sdk:

• download or git clone https://github.com/raspberrypi/pico-sdk.git

• Set PICO_SDK_PATH to the SDK location in your environment

4. download or git clone this repository

5. Resolve links

6. Install VS Code

7. In VS Code:

• Install extensions: C/C++ Extension Pack, CMake Tools

• File / Open Folder ... select location to /tsdesktop/pico-sdk

• In the bottom panel:

  • CMake : [Scan for kits], select: GCC X.X.X arm-none-eabi, Release

  • Build

8. Use bootselBoot tool to upload *.uf2 examples

Arduino

1. No other libraries are required

2. In Arduino:

• File / Preferences / Settings / Additional boards manager URLs (can be comma separated):

  • rp2040

    https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json

  • pic32

    https://raw.githubusercontent.com/chipKIT32/chipKIT-core/master/package_chipkit_index.json

  • esp32

    https://dl.espressif.com/dl/package_esp32_index.json

  • Hit OK to close the dialog.

• Tools / Board / Boards Manager ...

  • rp2040

    Type "pico" in the search box, you should see: Raspberry Pi Pico/RP2040, and select "Install"

    If after upgrading system to a new version of eabi e.g. to 10.x.x, Invalid -march:armv6-m error occures, it's time to upgrade this library too.

  • pic32

    Type "chipKIT" ...

  • esp32

    Look for "esp32" by Espressif

• Tools / Board / ... Boards / select your board

3. download or git clone this repository

4. Copy Arduino/libraries to Arduino's directory

5. Copy selected (1) Arduino/libraries_??? to Arduino/libraries

6. Resolve links to tsdesktop directories in Arduino/libraries

7. Copy Arduino/examples to Arduino's Sketchbook directory

8. For linux users:

• In Arduino:

  • Tools / Port / /dev/ttyACM0 or, if it appears instead /dev/ttyUSB0

• In console:

  • for one-time access:

    sudo chmod a+rw /dev/ttyACM0
  

  • or

    sudo chmod a+rw /dev/ttyUSB0
  

  • for permanent access:

    sudo usermod -aG dialout $USER
    sudo reboot
  

9. rp2040: If you want to use SerialUSB in/for tft pio debugging you must comment #include "Arduino.h" in packages/rp2040/hardware/rp2040/2.7.1/cores/rp2040/SerialUSB.h, similarly with SerialUART.h and SerialUART.cpp where you need to add #include "api/Common.h", "hardware/gpio.h", "pins_arduino.h" and copy/paste __bitset from Arduino.h wherever it appears instead.

Hints

1. If incidental touch pressed or not calibrated touch illusion occures, try reduce touch speed first

2. If not all colors are displayed, try reduce tft speed first