diff --git a/docs/node-documentation/TFT-screen.md b/docs/node-documentation/TFT-screen.md new file mode 100644 index 0000000..03f76ea --- /dev/null +++ b/docs/node-documentation/TFT-screen.md @@ -0,0 +1,59 @@ +# TFT screen + + +## Prequesites + +To use the TFT screen, you need to install the following libraries: + +``` SPI.h , Adafruit_GFX.h, Adafruit_ST7796S_kbv.h ``` + + +## Programming the screen +To program the screen we need to first declare all the pins and give it to the Adafruit_ST7796S_kbv.h library. Then we need to initialize the screen and we can start using it. + +```cpp +#define TFT_CS 14 +#define TFT_DC 13 +#define TFT_RST 12 +#define MOSI 11 +#define SCK 10 +#define MISO 9 + +//simplify the name of the library and feed all the correct pins to it + +Adafruit_ST7796S_kbv tft = Adafruit_ST7796S_kbv(TFT_CS, TFT_DC, MOSI, SCK, TFT_RST, MISO); +``` + +## Drawing on the screen + +To draw on the screen we can use the following functions: + +```cpp +tft.fillScreen(0x0000); //clear the screen +tft.fillRect(0, 0, 240, 240, 0xFFFF); //draw a white rectangle +tft.fillCircle(120, 120, 50, 0xF800); //draw a red circle +tft.fillTriangle(0, 0, 240, 240, 0, 240, 0x1F); //draw a blue triangle +tft.fillRoundRect(0, 0, 240, 240, 10, 0xF81F); //draw a pink rounded rectangle +tft.drawChar(120, 120, 'A', 0xFFFF, 0x0000, 2); //draw a character +tft.setTextSize(2); //set the text size +tft.setTextColor(0xFFFF); //set the text color +tft.setCursor(0, 0); //set the cursor +tft.println("Hello World!"); //print a string +``` + +To write Hello world on the screen we can use the following code: + +```cpp +tft.fillScreen(0x0000); //clear the screen +tft.setTextSize(2); //set the text size +tft.setTextColor(0xFFFF); //set the text color +tft.setCursor(0, 0); //set the cursor so it starts at the top right, you can also make this other numbers to change the position +tft.println("Hello World!"); //print a string +``` + +To clear the screen for new text you can use the following code: + +```cpp +tft.fillScreen(0x0000); //clear the screen +``` +