This post shows how to simulate the Arduino and the ST7735R (ST7735S) 1.8″ SPI TFT display.
To do this we need a Proteus version with the ST7735R library (model), new versions (for example 8.6 and higher) have this library, old versions (for example 8.2) don’t have it.
Related projects:
The example below shows how to interface the Arduino with the ST7735 TFT display (hardware circuit).
Arduino ST7735 1.8″ TFT display example
Proteus Circuit:
Proteus circuit schematic diagram is shown below.
Arduino Code:
To be able to compile the code below we need 2 libraries (Adafruit_ST7735 and Adafruit_GFX) from Adafruit industries, these libraries can be downloaded from the link below:
Download
Place both libraries in the Arduino IDE libraries folder.
The Arduino code used in this example is below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 | // Arduino ST7735 1.8" TFT example #include <Adafruit_GFX.h> // Core graphics library #include <Adafruit_ST7735.h> // Hardware-specific library #include <SPI.h> #define TFT_CS 10 // TFT CS pin is connected to arduino pin 10 #define TFT_DC 9 // TFT DC pin is connected to arduino pin 9 Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC); float p = 3.1415926; void setup(void) { tft.initR(INITR_BLACKTAB); // initialize a ST7735S chip, black tab uint16_t time = millis(); tft.fillScreen(ST7735_BLACK); time = millis() - time; delay(500); // large block of text tft.fillScreen(ST7735_BLACK); testdrawtext("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla sed malesuada et, malesuada sit amet turpis. Sed porttitor neque ut ante pretium vitae malesuada nunc bibendum. Nullam aliquet ultrices massa eu hendrerit. Ut sed nisi lorem. In vestibulum purus a tortor imperdiet posuere. ", ST7735_WHITE); delay(1000); // tft print function! tftPrintTest(); delay(4000); // a single pixel tft.drawPixel(tft.width()/2, tft.height()/2, ST7735_GREEN); delay(500); // line draw test testlines(ST7735_YELLOW); delay(500); // optimized lines testfastlines(ST7735_RED, ST7735_BLUE); delay(500); testdrawrects(ST7735_GREEN); delay(500); testfillrects(ST7735_YELLOW, ST7735_MAGENTA); delay(500); tft.fillScreen(ST7735_BLACK); testfillcircles(10, ST7735_BLUE); testdrawcircles(10, ST7735_WHITE); delay(500); testroundrects(); delay(500); testtriangles(); delay(500); mediabuttons(); delay(500); delay(1000); } void loop() { tft.invertDisplay(true); delay(500); tft.invertDisplay(false); delay(500); } void testlines(uint16_t color) { tft.fillScreen(ST7735_BLACK); for (int16_t x=0; x < tft.width(); x+=6) { tft.drawLine(0, 0, x, tft.height()-1, color); } for (int16_t y=0; y < tft.height(); y+=6) { tft.drawLine(0, 0, tft.width()-1, y, color); } tft.fillScreen(ST7735_BLACK); for (int16_t x=0; x < tft.width(); x+=6) { tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color); } for (int16_t y=0; y < tft.height(); y+=6) { tft.drawLine(tft.width()-1, 0, 0, y, color); } tft.fillScreen(ST7735_BLACK); for (int16_t x=0; x < tft.width(); x+=6) { tft.drawLine(0, tft.height()-1, x, 0, color); } for (int16_t y=0; y < tft.height(); y+=6) { tft.drawLine(0, tft.height()-1, tft.width()-1, y, color); } tft.fillScreen(ST7735_BLACK); for (int16_t x=0; x < tft.width(); x+=6) { tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color); } for (int16_t y=0; y < tft.height(); y+=6) { tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color); } } void testdrawtext(char *text, uint16_t color) { tft.setCursor(0, 0); tft.setTextColor(color); tft.setTextWrap(true); tft.print(text); } void testfastlines(uint16_t color1, uint16_t color2) { tft.fillScreen(ST7735_BLACK); for (int16_t y=0; y < tft.height(); y+=5) { tft.drawFastHLine(0, y, tft.width(), color1); } for (int16_t x=0; x < tft.width(); x+=5) { tft.drawFastVLine(x, 0, tft.height(), color2); } } void testdrawrects(uint16_t color) { tft.fillScreen(ST7735_BLACK); for (int16_t x=0; x < tft.width(); x+=6) { tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color); } } void testfillrects(uint16_t color1, uint16_t color2) { tft.fillScreen(ST7735_BLACK); for (int16_t x=tft.width()-1; x > 6; x-=6) { tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1); tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2); } } void testfillcircles(uint8_t radius, uint16_t color) { for (int16_t x=radius; x < tft.width(); x+=radius*2) { for (int16_t y=radius; y < tft.height(); y+=radius*2) { tft.fillCircle(x, y, radius, color); } } } void testdrawcircles(uint8_t radius, uint16_t color) { for (int16_t x=0; x < tft.width()+radius; x+=radius*2) { for (int16_t y=0; y < tft.height()+radius; y+=radius*2) { tft.drawCircle(x, y, radius, color); } } } void testtriangles() { tft.fillScreen(ST7735_BLACK); int color = 0xF800; int t; int w = tft.width()/2; int x = tft.height()-1; int y = 0; int z = tft.width(); for(t = 0 ; t <= 15; t++) { tft.drawTriangle(w, y, y, x, z, x, color); x-=4; y+=4; z-=4; color+=100; } } void testroundrects() { tft.fillScreen(ST7735_BLACK); int color = 100; int i; int t; for(t = 0 ; t <= 4; t+=1) { int x = 0; int y = 0; int w = tft.width()-2; int h = tft.height()-2; for(i = 0 ; i <= 16; i+=1) { tft.drawRoundRect(x, y, w, h, 5, color); x+=2; y+=3; w-=4; h-=6; color+=1100; } color+=100; } } void tftPrintTest() { tft.setTextWrap(false); tft.fillScreen(ST7735_BLACK); tft.setCursor(0, 30); tft.setTextColor(ST7735_RED); tft.setTextSize(1); tft.println("Hello World!"); tft.setTextColor(ST7735_YELLOW); tft.setTextSize(2); tft.println("Hello World!"); tft.setTextColor(ST7735_GREEN); tft.setTextSize(3); tft.println("Hello World!"); tft.setTextColor(ST7735_BLUE); tft.setTextSize(4); tft.print(1234.567); delay(1500); tft.setCursor(0, 0); tft.fillScreen(ST7735_BLACK); tft.setTextColor(ST7735_WHITE); tft.setTextSize(0); tft.println("Hello World!"); tft.setTextSize(1); tft.setTextColor(ST7735_GREEN); tft.print(p, 6); tft.println(" Want pi?"); tft.println(" "); tft.print(8675309, HEX); // print 8,675,309 out in HEX! tft.println(" Print HEX!"); tft.println(" "); tft.setTextColor(ST7735_WHITE); tft.println("Sketch has been"); tft.println("running for: "); tft.setTextColor(ST7735_MAGENTA); tft.print(millis() / 1000); tft.setTextColor(ST7735_WHITE); tft.print(" seconds."); } void mediabuttons() { // play tft.fillScreen(ST7735_BLACK); tft.fillRoundRect(25, 10, 78, 60, 8, ST7735_WHITE); tft.fillTriangle(42, 20, 42, 60, 90, 40, ST7735_RED); delay(500); // pause tft.fillRoundRect(25, 90, 78, 60, 8, ST7735_WHITE); tft.fillRoundRect(39, 98, 20, 45, 5, ST7735_GREEN); tft.fillRoundRect(69, 98, 20, 45, 5, ST7735_GREEN); delay(500); // play color tft.fillTriangle(42, 20, 42, 60, 90, 40, ST7735_BLUE); delay(50); // pause color tft.fillRoundRect(39, 98, 20, 45, 5, ST7735_RED); tft.fillRoundRect(69, 98, 20, 45, 5, ST7735_RED); // play color tft.fillTriangle(42, 20, 42, 60, 90, 40, ST7735_GREEN); } |
Arduino and ST7735R TFT Proteus simulation video:
Arduino UNO + ST7735R TFT Proteus simulation file download:
Proteus simulation download URL is below, use it with version 8.6 or later.
Download
if out from arduino is SDI not SDA , whats pin must to change?
How to get ST7735R library?
It’s included in Proteus version 8.6 (and higher).