directory move

picocalc/libraries/TFT_eSPI/examples/480 x 320/TFT_Rainbow480/TFT_Rainbow480.ino

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+/*
+ An example showing rainbow colours on a 3.0 or 3.2" TFT LCD screen
+ and to show basic examples of font use.
+
+ This sketch uses the GLCD, 2, 4, 6 fonts only.
+
+ Make sure all the required fonts are loaded by editing the
+ User_Setup.h file in the TFT_eSPI library folder.
+
+
+  #########################################################################
+  ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
+  ######           TO SELECT THE FONTS AND PINS YOU USE              ######
+  #########################################################################
+ */
+
+#include <SPI.h>
+
+#include <TFT_eSPI.h> // Hardware-specific library
+
+TFT_eSPI tft = TFT_eSPI();       // Invoke custom library
+
+unsigned long targetTime = 0;
+byte red = 31;
+byte green = 0;
+byte blue = 0;
+byte state = 0;
+unsigned int colour = red << 11; // Colour order is RGB 5+6+5 bits each
+
+void setup(void) {
+  tft.init();
+  tft.setRotation(2);
+  tft.fillScreen(TFT_BLACK);
+
+  targetTime = millis() + 1000;
+}
+
+void loop() {
+
+  if (targetTime < millis()) {
+    targetTime = millis() + 10000;
+
+    rainbow_fill(); // Fill the screen with rainbow colours
+
+    // The standard AdaFruit font still works as before
+    tft.setTextColor(TFT_BLACK); // Background is not defined so it is transparent
+    tft.setCursor (100, 5);
+    tft.setTextFont(1);        // Select font 1 which is the Adafruit GLCD font
+    tft.print("Original Adafruit font!");
+
+    // The new larger fonts do not need to use the .setCursor call, coords are embedded
+    tft.setTextColor(TFT_BLACK); // Do not plot the background colour
+    // Overlay the black text on top of the rainbow plot (the advantage of not drawing the backgorund colour!)
+    tft.drawCentreString("Font size 2", 160, 14, 2); // Draw text centre at position 120, 14 using font 2
+    tft.drawCentreString("Font size 4", 160, 30, 4); // Draw text centre at position 120, 30 using font 4
+    tft.drawCentreString("12.34", 160, 54, 6);       // Draw text centre at position 120, 54 using font 6
+    tft.drawCentreString("12.34 is in font 6", 160, 92, 2); // Draw text centre at position 120, 92 using font 2
+    // Note the x, y position is the top left corner of the first character printed!
+
+    // draw a floating point number
+    float pi = 3.14159; // Value to print
+    int precision = 3;  // Number of digits after decimal point
+    int xpos = 130;     // x position
+    int ypos = 110;     // y position
+    int font = 2;       // font number 2
+    xpos += tft.drawFloat(pi, precision, xpos, ypos, font); // Draw rounded number and return new xpos delta for next print position
+    tft.drawString(" is pi", xpos, ypos, font);             // Continue printing from new x position
+
+    tft.setTextSize(1);           // We are using a text size multiplier of 1
+
+    tft.setTextColor(TFT_BLACK);  // Set text colour to black, no background (so transparent)
+    tft.setCursor(76, 150, 4);    // Set cursor to x = 76, y = 150 and use font 4
+    tft.println("Transparent...");  // As we use println, the cursor moves to the next line
+
+    tft.setCursor(70, 175);    // Set cursor to x = 70, y = 175
+    tft.setTextColor(TFT_WHITE, TFT_BLACK);  // Set text colour to white and background to black
+    tft.println("White on black");
+
+    tft.setTextFont(4);        // Select font 4 without moving cursor
+    tft.setCursor(00, 210);    // Set cursor to x = 90, y = 210 without changing the font
+    tft.setTextColor(TFT_WHITE);
+    
+    // By using the print class we can use all the formatting features like printing HEX
+    tft.print(57005, HEX);    // Cursor does no move to next line
+    tft.println(48879, HEX);  // print and move cursor to next line
+
+    tft.setTextColor(TFT_GREEN, TFT_BLACK); // This time we will use green text on a black background
+    tft.setTextFont(2); // Select font 2
+    //Text will wrap to the next line if needed, by luck it breaks the lines at a space..
+    tft.println(" Ode to a Small Lump of Green Putty I Found in My Armpit One Midsummer Morning ");
+
+    tft.drawCentreString("34.56", 160, 300, 7);       // Draw text centre at position 120, 54 using font 6
+    tft.drawCentreString("34.56 is in font 7", 160, 350, 2); // Draw text centre at position 120, 92 using font 2
+
+    tft.drawCentreString("78.90", 160, 370, 8);       // Draw text centre at position 120, 54 using font 6
+    tft.drawCentreString("78.90 is in font 8", 160, 450, 2); // Draw text centre at position 120, 92 using font 2
+  }
+}
+
+// Fill screen with a rainbow pattern
+void rainbow_fill()
+{
+  // The colours and state are not initialised so the start colour changes each time the funtion is called
+  
+  for (int i = 479; i > 0; i--) {
+    // Draw a vertical line 1 pixel wide in the selected colour
+    tft.drawFastHLine(0, i, tft.width(), colour); // in this example tft.width() returns the pixel width of the display
+    // This is a "state machine" that ramps up/down the colour brightnesses in sequence
+    switch (state) {
+      case 0:
+        green ++;
+        if (green == 64) {
+          green = 63;
+          state = 1;
+        }
+        break;
+      case 1:
+        red--;
+        if (red == 255) {
+          red = 0;
+          state = 2;
+        }
+        break;
+      case 2:
+        blue ++;
+        if (blue == 32) {
+          blue = 31;
+          state = 3;
+        }
+        break;
+      case 3:
+        green --;
+        if (green == 255) {
+          green = 0;
+          state = 4;
+        }
+        break;
+      case 4:
+        red ++;
+        if (red == 32) {
+          red = 31;
+          state = 5;
+        }
+        break;
+      case 5:
+        blue --;
+        if (blue == 255) {
+          blue = 0;
+          state = 0;
+        }
+        break;
+    }
+    colour = red << 11 | green << 5 | blue;
+  }
+}
+
+
+