File content as of revision 0:476e21f8f23a:

#include "mbed.h"
#include "Adafruit_ST7735.h"

Adafruit_ST7735 tft(D11, D12, D13, D10, D8, D9); // MOSI, MISO, SCLK, SSEL, TFT_DC, TFT_RST

void testlines(uint16_t color);
void testfastlines(uint16_t color1, uint16_t color2);
void testdrawrects(uint16_t color);
void testfillrects(uint16_t color1, uint16_t color2);
void testfillcircles(uint8_t radius, uint16_t color);
void testdrawcircles(uint8_t radius, uint16_t color);
void testtriangles(void);
void testroundrects(void);
void mediabuttons(void);
void testdrawtext(char *text, uint16_t color);
void tftPrintTest(void);

int main(void)
{
  // Use this initializer if you're using a 1.8" TFT
  tft.initR(INITR_BLACKTAB);   // initialize a ST7735S chip, black tab

  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);
  wait_ms(1000);

  // tft print function!
  tftPrintTest();
  wait_ms(1000);
  
  tft.drawPixel(tft.width()/2, tft.height()/2, ST7735_GREEN);
  wait_ms(500);
  
  testlines(ST7735_YELLOW);
  wait_ms(500);
  
  testfastlines(ST7735_RED, ST7735_BLUE);
  wait_ms(500);
  
  testdrawrects(ST7735_GREEN);
  wait_ms(500);
  
  testfillrects(ST7735_YELLOW, ST7735_MAGENTA);
  wait_ms(500);
  
  tft.fillScreen(ST7735_BLACK);
  testfillcircles(10, ST7735_BLUE);
  testdrawcircles(10, ST7735_WHITE);
  wait_ms(500);
  
  testroundrects();
  wait_ms(500);
  
  testtriangles();
  wait_ms(500);
  
  mediabuttons();
  wait_ms(500);
  
  while(1)
  {
      tft.invertDisplay(true);
      wait_ms(500);
      tft.invertDisplay(false);
      wait_ms(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 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+=1) {
    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 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);
  wait_ms(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);
  wait_ms(500);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST7735_BLUE);
  wait_ms(500);
  // pause color
  tft.fillRoundRect(39, 98, 20, 45, 5, ST7735_RED);
  tft.fillRoundRect(69, 98, 20, 45, 5, ST7735_RED);
  wait_ms(500);
  // play color
  tft.fillTriangle(42, 20, 42, 60, 90, 40, ST7735_GREEN);
}

void testdrawtext(char *text, uint16_t color) {
  tft.setCursor(0, 0);
  tft.setTextColor(color);
  tft.setTextWrap(true);
  tft.printf("%s",text);
}

void tftPrintTest() {
  tft.setTextWrap(false);
  tft.fillScreen(ST7735_BLACK);
  tft.setCursor(0, 30);
  tft.setTextColor(ST7735_RED);
  tft.setTextSize(1);
  tft.printf("Hello World!\r\n");
  tft.setTextColor(ST7735_YELLOW);
  tft.setTextSize(2);
  tft.printf("Hello World!\r\n");
  tft.setTextColor(ST7735_GREEN);
  tft.setTextSize(3);
  tft.printf("Hello World!\r\n");
}