directory move

2025-04-10 23:12:01 -07:00
parent 25199750cf
commit 8ecbfeab1e
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--- a/picocalc/libraries/TFT_eSPI/examples/Test
+++ b/picocalc/libraries/TFT_eSPI/examples/Test
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+
+//   Diagnostic test for the displayed colour order
+//
+// Written by Bodmer 17/2/19 for the TFT_eSPI library:
+// https://github.com/Bodmer/TFT_eSPI
+
+/* 
+ Different hardware manufacturers use different colour order
+ configurations at the hardware level.  This may result in
+ incorrect colours being displayed.
+
+ Incorrectly displayed colours could also be the result of
+ using the wrong display driver in the library setup file.
+
+ Typically displays have a control register (MADCTL) that can
+ be used to set the Red Green Blue (RGB) colour order to RGB
+ or BRG so that red and blue are swapped on the display.
+
+ This control register is also used to manage the display
+ rotation and coordinate mirroring. The control register
+ typically has 8 bits, for the ILI9341 these are:
+
+ Bit Function
+ 7   Mirror Y coordinate (row address order)
+ 6   Mirror X coordinate (column address order)
+ 5   Row/column exchange (for rotation)
+ 4   Refresh direction (top to bottom or bottom to top in portrait orientation)
+ 3   RGB order (swaps red and blue)
+ 2   Refresh direction (top to bottom or bottom to top in landscape orientation)
+ 1   Not used
+ 0   Not used
+
+ The control register bits can be written with this example command sequence:
+ 
+    tft.writecommand(TFT_MADCTL);
+    tft.writedata(0x48);          // Bits 6 and 3 set
+    
+ 0x48 is the default value for ILI9341 (0xA8 for ESP32 M5STACK)
+ in rotation 0 orientation.
+ 
+ Another control register can be used to "invert" colours,
+ this swaps black and white as well as other colours (e.g.
+ green to magenta, red to cyan, blue to yellow).
+ 
+ To invert colours insert this line after tft.init() or tft.begin():
+
+    tft.invertDisplay( invert ); // Where invert is true or false
+
+*/
+
+#include <SPI.h>
+
+#include <TFT_eSPI.h>       // Hardware-specific library
+
+TFT_eSPI tft = TFT_eSPI();  // Invoke custom library
+
+void setup(void) {
+  tft.init();
+
+  tft.fillScreen(TFT_BLACK);
+  tft.drawRect(0, 0, tft.width(), tft.height(), TFT_GREEN);
+
+  // Set "cursor" at top left corner of display (0,0) and select font 4
+  tft.setCursor(0, 4, 4);
+
+  // Set the font colour to be white with a black background
+  tft.setTextColor(TFT_WHITE);
+
+  // We can now plot text on screen using the "print" class
+  tft.println(" Initialised default\n");
+  tft.println(" White text");
+  
+  tft.setTextColor(TFT_RED);
+  tft.println(" Red text");
+  
+  tft.setTextColor(TFT_GREEN);
+  tft.println(" Green text");
+  
+  tft.setTextColor(TFT_BLUE);
+  tft.println(" Blue text");
+
+  delay(5000);
+
+}
+
+void loop() {
+
+  tft.invertDisplay( false ); // Where i is true or false
+ 
+  tft.fillScreen(TFT_BLACK);
+  tft.drawRect(0, 0, tft.width(), tft.height(), TFT_GREEN);
+
+  tft.setCursor(0, 4, 4);
+
+  tft.setTextColor(TFT_WHITE);
+  tft.println(" Invert OFF\n");
+
+  tft.println(" White text");
+  
+  tft.setTextColor(TFT_RED);
+  tft.println(" Red text");
+  
+  tft.setTextColor(TFT_GREEN);
+  tft.println(" Green text");
+  
+  tft.setTextColor(TFT_BLUE);
+  tft.println(" Blue text");
+
+  delay(5000);
+
+
+  // Binary inversion of colours
+  tft.invertDisplay( true ); // Where i is true or false
+ 
+  tft.fillScreen(TFT_BLACK);
+  tft.drawRect(0, 0, tft.width(), tft.height(), TFT_GREEN);
+
+  tft.setCursor(0, 4, 4);
+
+  tft.setTextColor(TFT_WHITE);
+  tft.println(" Invert ON\n");
+
+  tft.println(" White text");
+  
+  tft.setTextColor(TFT_RED);
+  tft.println(" Red text");
+  
+  tft.setTextColor(TFT_GREEN);
+  tft.println(" Green text");
+  
+  tft.setTextColor(TFT_BLUE);
+  tft.println(" Blue text");
+
+  delay(5000);
+}