README.md
Description

A simple XPT2046 Touch Screen library for STM32 micro-controllers.


The first example sketch (TouchTest.ino) checks if the touch screen has been pressed and prints the X,Y coordinates on the Serial port 1.
The second example sketch (TouchButtons.ino) creates some virtual buttons defined by the user.


Copyright (c) 03 December 2015 by Vassilis Serasidis

Home: <![CDATA[]]>http://www.serasidis.gr<![CDATA[]]> , <![CDATA[]]>https://github.com/Serasidis<![CDATA[]]>

The library is written for STM32duino (<![CDATA[]]>http://stm32duino.com<![CDATA[]]>)

 //Create 4*2=8 virtual buttons
 #define LINES     2 //Divide the touch screen into 2 lines
 #define COLUMNS   4 //Divide the touch screen into 4 columns




Screenshot of the Serial port 1 (TouchButtons.ino)

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XPT2046 touch screen buttons
Copyright (c) 02 Dec 2015 by Vassilis Serasidis


Home: http://www.serasidis.gr

Button: 1
X: 1097
Y: 800

Button: 2
X: 3455
Y: 617

Button: 3
X: 684
Y: 1483

Button: 4
X: 3412
Y: 1198

Button: 5
X: 860
Y: 2395

Button: 6
X: 3353
Y: 2355



PIN Connections between XPT2046 and STM32F103




  
XPT2046
  
STM32F103




  
T_DO
  
PA6


  
T_DIN
  
PA7


  
T_CS
  
PA3


  
T_CLK
  
PA5




Selecting the SPI port number and Chip Select pin

Can be used other SPI port than the default SPI1 port. Just select the SPI port you want by replacing the following line into the sketch:

SPIClass mySPI(1); //Create an SPI instance on SPI1 port.
//SPIClass mySPI(2); //Create an SPI instance on SPI2 port.


The Chip select pin can be defined by the user also.

#define CS_PIN  PA3  // The pin PA3 has been chosen as Chip Select pin.