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gfx demo for featherwing
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‎examples/graphicstest_featherwing/graphicstest_featherwing.ino

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/***************************************************
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This is our GFX example for the Adafruit ILI9341 TFT FeatherWing
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----> http://www.adafruit.com/products/3315
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Check out the links above for our tutorials and wiring diagrams
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Adafruit invests time and resources providing this open source code,
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please support Adafruit and open-source hardware by purchasing
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products from Adafruit!
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Written by Limor Fried/Ladyada for Adafruit Industries.
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MIT license, all text above must be included in any redistribution
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****************************************************/
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#include <SPI.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_ILI9341.h>
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#ifdef ESP8266
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#define STMPE_CS 16
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#define TFT_CS 0
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#define TFT_DC 15
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#define SD_CS 2
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#endif
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#ifdef __AVR_ATmega32U4__
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#define STMPE_CS 6
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#define TFT_CS 9
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#define TFT_DC 10
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#define SD_CS 5
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#endif
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#ifdef ARDUINO_SAMD_FEATHER_M0
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#define STMPE_CS 6
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#define TFT_CS 9
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#define TFT_DC 10
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#define SD_CS 5
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#endif
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#ifdef TEENSYDUINO
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#define TFT_DC 10
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#define TFT_CS 4
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#define STMPE_CS 3
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#define SD_CS 8
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#endif
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#ifdef ARDUINO_STM32_FEATHER
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#define TFT_DC PB4
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#define TFT_CS PA15
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#define STMPE_CS PC7
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#define SD_CS PC5
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#endif
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Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);
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void setup() {
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Serial.begin(115200);
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delay(10);
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Serial.println("FeatherWing TFT Test!");
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tft.begin();
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// read diagnostics (optional but can help debug problems)
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uint8_t x = tft.readcommand8(ILI9341_RDMODE);
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Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);
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x = tft.readcommand8(ILI9341_RDMADCTL);
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Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);
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x = tft.readcommand8(ILI9341_RDPIXFMT);
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Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);
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x = tft.readcommand8(ILI9341_RDIMGFMT);
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Serial.print("Image Format: 0x"); Serial.println(x, HEX);
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x = tft.readcommand8(ILI9341_RDSELFDIAG);
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Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX);
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Serial.println(F("Benchmark Time (microseconds)"));
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delay(10);
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Serial.print(F("Screen fill "));
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Serial.println(testFillScreen());
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delay(500);
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Serial.print(F("Text "));
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Serial.println(testText());
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delay(3000);
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Serial.print(F("Lines "));
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Serial.println(testLines(ILI9341_CYAN));
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delay(500);
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Serial.print(F("Horiz/Vert Lines "));
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Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));
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delay(500);
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Serial.print(F("Rectangles (outline) "));
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Serial.println(testRects(ILI9341_GREEN));
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delay(500);
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Serial.print(F("Rectangles (filled) "));
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Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));
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delay(500);
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Serial.print(F("Circles (filled) "));
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Serial.println(testFilledCircles(10, ILI9341_MAGENTA));
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Serial.print(F("Circles (outline) "));
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Serial.println(testCircles(10, ILI9341_WHITE));
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delay(500);
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Serial.print(F("Triangles (outline) "));
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Serial.println(testTriangles());
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delay(500);
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Serial.print(F("Triangles (filled) "));
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Serial.println(testFilledTriangles());
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delay(500);
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Serial.print(F("Rounded rects (outline) "));
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Serial.println(testRoundRects());
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delay(500);
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Serial.print(F("Rounded rects (filled) "));
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Serial.println(testFilledRoundRects());
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delay(500);
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Serial.println(F("Done!"));
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}
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void loop(void) {
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for(uint8_t rotation=0; rotation<4; rotation++) {
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tft.setRotation(rotation);
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testText();
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delay(1000);
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}
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}
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unsigned long testFillScreen() {
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unsigned long start = micros();
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tft.fillScreen(ILI9341_BLACK);
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yield();
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tft.fillScreen(ILI9341_RED);
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yield();
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tft.fillScreen(ILI9341_GREEN);
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yield();
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tft.fillScreen(ILI9341_BLUE);
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yield();
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tft.fillScreen(ILI9341_BLACK);
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yield();
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return micros() - start;
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}
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unsigned long testText() {
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tft.fillScreen(ILI9341_BLACK);
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unsigned long start = micros();
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tft.setCursor(0, 0);
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tft.setTextColor(ILI9341_WHITE); tft.setTextSize(1);
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tft.println("Hello World!");
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tft.setTextColor(ILI9341_YELLOW); tft.setTextSize(2);
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tft.println(1234.56);
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tft.setTextColor(ILI9341_RED); tft.setTextSize(3);
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tft.println(0xDEADBEEF, HEX);
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tft.println();
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tft.setTextColor(ILI9341_GREEN);
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tft.setTextSize(5);
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tft.println("Groop");
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tft.setTextSize(2);
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tft.println("I implore thee,");
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tft.setTextSize(1);
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tft.println("my foonting turlingdromes.");
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tft.println("And hooptiously drangle me");
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tft.println("with crinkly bindlewurdles,");
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tft.println("Or I will rend thee");
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tft.println("in the gobberwarts");
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tft.println("with my blurglecruncheon,");
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tft.println("see if I don't!");
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return micros() - start;
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}
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unsigned long testLines(uint16_t color) {
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unsigned long start, t;
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int x1, y1, x2, y2,
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w = tft.width(),
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h = tft.height();
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tft.fillScreen(ILI9341_BLACK);
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yield();
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x1 = y1 = 0;
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y2 = h - 1;
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start = micros();
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for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
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x2 = w - 1;
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for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
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t = micros() - start; // fillScreen doesn't count against timing
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yield();
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tft.fillScreen(ILI9341_BLACK);
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yield();
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x1 = w - 1;
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y1 = 0;
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y2 = h - 1;
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start = micros();
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for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
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x2 = 0;
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for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
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t += micros() - start;
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yield();
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tft.fillScreen(ILI9341_BLACK);
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yield();
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x1 = 0;
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y1 = h - 1;
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y2 = 0;
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start = micros();
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for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
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x2 = w - 1;
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for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
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t += micros() - start;
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yield();
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tft.fillScreen(ILI9341_BLACK);
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yield();
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x1 = w - 1;
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y1 = h - 1;
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y2 = 0;
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start = micros();
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for(x2=0; x2<w; x2+=6) tft.drawLine(x1, y1, x2, y2, color);
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x2 = 0;
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for(y2=0; y2<h; y2+=6) tft.drawLine(x1, y1, x2, y2, color);
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yield();
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return micros() - start;
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}
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unsigned long testFastLines(uint16_t color1, uint16_t color2) {
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unsigned long start;
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int x, y, w = tft.width(), h = tft.height();
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tft.fillScreen(ILI9341_BLACK);
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start = micros();
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for(y=0; y<h; y+=5) tft.drawFastHLine(0, y, w, color1);
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for(x=0; x<w; x+=5) tft.drawFastVLine(x, 0, h, color2);
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return micros() - start;
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}
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unsigned long testRects(uint16_t color) {
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unsigned long start;
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int n, i, i2,
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cx = tft.width() / 2,
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cy = tft.height() / 2;
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tft.fillScreen(ILI9341_BLACK);
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n = min(tft.width(), tft.height());
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start = micros();
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for(i=2; i<n; i+=6) {
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i2 = i / 2;
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tft.drawRect(cx-i2, cy-i2, i, i, color);
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}
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return micros() - start;
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}
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unsigned long testFilledRects(uint16_t color1, uint16_t color2) {
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unsigned long start, t = 0;
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int n, i, i2,
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cx = tft.width() / 2 - 1,
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cy = tft.height() / 2 - 1;
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tft.fillScreen(ILI9341_BLACK);
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n = min(tft.width(), tft.height());
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for(i=n; i>0; i-=6) {
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i2 = i / 2;
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start = micros();
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tft.fillRect(cx-i2, cy-i2, i, i, color1);
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t += micros() - start;
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// Outlines are not included in timing results
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tft.drawRect(cx-i2, cy-i2, i, i, color2);
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yield();
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}
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return t;
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}
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unsigned long testFilledCircles(uint8_t radius, uint16_t color) {
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unsigned long start;
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int x, y, w = tft.width(), h = tft.height(), r2 = radius * 2;
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tft.fillScreen(ILI9341_BLACK);
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start = micros();
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for(x=radius; x<w; x+=r2) {
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for(y=radius; y<h; y+=r2) {
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tft.fillCircle(x, y, radius, color);
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}
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}
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return micros() - start;
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}
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unsigned long testCircles(uint8_t radius, uint16_t color) {
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unsigned long start;
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int x, y, r2 = radius * 2,
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w = tft.width() + radius,
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h = tft.height() + radius;
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// Screen is not cleared for this one -- this is
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// intentional and does not affect the reported time.
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start = micros();
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for(x=0; x<w; x+=r2) {
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for(y=0; y<h; y+=r2) {
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tft.drawCircle(x, y, radius, color);
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}
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}
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return micros() - start;
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}
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unsigned long testTriangles() {
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unsigned long start;
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int n, i, cx = tft.width() / 2 - 1,
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cy = tft.height() / 2 - 1;
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tft.fillScreen(ILI9341_BLACK);
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n = min(cx, cy);
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start = micros();
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for(i=0; i<n; i+=5) {
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tft.drawTriangle(
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cx , cy - i, // peak
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cx - i, cy + i, // bottom left
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cx + i, cy + i, // bottom right
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tft.color565(i, i, i));
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}
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return micros() - start;
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}
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unsigned long testFilledTriangles() {
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unsigned long start, t = 0;
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int i, cx = tft.width() / 2 - 1,
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cy = tft.height() / 2 - 1;
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tft.fillScreen(ILI9341_BLACK);
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start = micros();
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for(i=min(cx,cy); i>10; i-=5) {
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start = micros();
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tft.fillTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,
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tft.color565(0, i*10, i*10));
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t += micros() - start;
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tft.drawTriangle(cx, cy - i, cx - i, cy + i, cx + i, cy + i,
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tft.color565(i*10, i*10, 0));
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yield();
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}
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return t;
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}
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unsigned long testRoundRects() {
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unsigned long start;
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int w, i, i2,
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cx = tft.width() / 2 - 1,
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cy = tft.height() / 2 - 1;
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tft.fillScreen(ILI9341_BLACK);
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w = min(tft.width(), tft.height());
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start = micros();
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for(i=0; i<w; i+=6) {
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i2 = i / 2;
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tft.drawRoundRect(cx-i2, cy-i2, i, i, i/8, tft.color565(i, 0, 0));
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}
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return micros() - start;
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}
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unsigned long testFilledRoundRects() {
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unsigned long start;
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int i, i2,
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cx = tft.width() / 2 - 1,
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cy = tft.height() / 2 - 1;
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tft.fillScreen(ILI9341_BLACK);
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start = micros();
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for(i=min(tft.width(), tft.height()); i>20; i-=6) {
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i2 = i / 2;
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tft.fillRoundRect(cx-i2, cy-i2, i, i, i/8, tft.color565(0, i, 0));
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yield();
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}
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return micros() - start;
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}

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