1 | #include <Adafruit_GFX.h> // Core graphics library
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2 | #include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
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3 | #include <SPI.h>
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4 |
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5 | // For the breakout board, you can use any 2 or 3 pins.
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6 | // These pins will also work for the 1.8" TFT shield.
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7 | #define TFT_CS 10
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8 | #define TFT_RST 8 // Or set to -1 and connect to Arduino RESET pin
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9 | #define TFT_DC 9
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10 |
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11 | // For 1.14", 1.3", 1.54", and 2.0" TFT with ST7789:
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12 | Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
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13 |
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14 | float p = 3.1415926;
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15 |
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16 | void setup(void) {
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17 | Serial.begin(9600);
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18 | Serial.print(F("Hello! ST7789 TFT Test"));
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19 |
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20 | // OR use this initializer (uncomment) if using a 2.0" 320x240 TFT:
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21 | tft.init(320, 480); // Init ST7789 320x240
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22 |
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23 | // SPI speed defaults to SPI_DEFAULT_FREQ defined in the library, you can override it here
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24 | // Note that speed allowable depends on chip and quality of wiring, if you go too fast, you
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25 | // may end up with a black screen some times, or all the time.
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26 | //tft.setSPISpeed(40000000);
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27 |
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28 | Serial.println(F("Initialized"));
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29 |
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30 | uint16_t time = millis();
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31 | tft.fillScreen(ST77XX_BLACK);
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32 | time = millis() - time;
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33 |
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34 | Serial.println(time, DEC);
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35 | delay(500);
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36 |
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37 | // large block of text
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38 | tft.fillScreen(ST77XX_BLACK);
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39 | testdrawtext("Hallo Welt! Stimmt dieser Text? ", ST77XX_WHITE);
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40 | delay(1000);
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41 |
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42 | // tft print function!
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43 | tftPrintTest();
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44 | delay(4000);
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45 |
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46 | // a single pixel
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47 | tft.drawPixel(tft.width()/2, tft.height()/2, ST77XX_GREEN);
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48 | delay(500);
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49 |
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50 |
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51 | tftPrintTest();
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52 |
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53 | Serial.println("done");
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54 | delay(1000);
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55 | }
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56 |
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57 | void loop() {
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58 |
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59 | }
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60 |
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61 | void testdrawtext(char *text, uint16_t color) {
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62 | tft.setCursor(0, 0);
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63 | tft.setTextColor(color);
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64 | tft.setTextWrap(false);
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65 | tft.print(text);
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66 | }
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67 |
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68 | void tftPrintTest() {
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69 | tft.setTextWrap(false);
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70 | tft.fillScreen(ST77XX_BLACK);
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71 | tft.setCursor(0, 30);
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72 | tft.setTextColor(ST77XX_RED);
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73 | tft.setTextSize(1);
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74 | tft.println("Hello World!");
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75 | tft.setTextColor(ST77XX_YELLOW);
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76 | tft.setTextSize(2);
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77 | tft.println("Hello World!");
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78 | tft.setTextColor(ST77XX_GREEN);
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79 | tft.setTextSize(3);
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80 | tft.println("Hello World!");
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81 | tft.setTextColor(ST77XX_BLUE);
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82 | tft.setTextSize(4);
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83 | tft.print(1234.567);
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84 | delay(1500);
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85 | tft.setCursor(0, 0);
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86 | tft.fillScreen(ST77XX_BLACK);
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87 | tft.setTextColor(ST77XX_WHITE);
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88 | tft.setTextSize(0);
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89 | tft.println("Hello World!");
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90 | tft.setTextSize(1);
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91 | tft.setTextColor(ST77XX_GREEN);
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92 | tft.print(p, 6);
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93 | tft.println(" Want pi?");
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94 | tft.println(" ");
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95 | tft.print(8675309, HEX); // print 8,675,309 out in HEX!
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96 | tft.println(" Print HEX!");
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97 | tft.println(" ");
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98 | tft.setTextColor(ST77XX_WHITE);
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99 | tft.println("Sketch has been");
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100 | tft.println("running for: ");
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101 | tft.setTextColor(ST77XX_MAGENTA);
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102 | tft.print(millis() / 1000);
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103 | tft.setTextColor(ST77XX_WHITE);
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104 | tft.print(" seconds.");
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105 | }
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20200925_093848.jpg
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