Chinese TFT SPI 2.8'' display as touchscreen

You're lucky, I really don't understand why it's not working for me.
I double checked and saw that I had the interrrupt wired on D3, do I changed to D2 but it's still the same : infinite loop saying "Pressure = 4095, x = 0, y = 0"... even if I don't touch it

When I use it just for display, I use this :

#define _sclk 13
#define _miso 12 // Needed for SD card, but does not need to be connected to TFT
#define _mosi 11 // Master Out Slave In to send commands/data to TFT and SD card

// TFT chip select and data/command line
#define _cs 10
#define _dc 9

// SD card chip select
#define _sdcs 8

// TFT reset line, can be connected to Arduino reset
#define _rst 7

Now, should I do something to those unused pins (7, 9 and 10), and what?