71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
/*
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Test the tft.print() viz embedded tft.write() function
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This sketch used font 2, 4, 7
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Make sure all the display driver and pin comnenctions are correct by
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editting the User_Setup.h file in the TFT_eSPI library folder.
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Note that yield() or delay(0) must be called in long duration for/while
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loops to stop the ESP8266 watchdog triggering.
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#########################################################################
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###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
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#########################################################################
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*/
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#include <TFT_eSPI.h> // Graphics and font library for ST7735 driver chip
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#include <SPI.h>
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TFT_eSPI tft = TFT_eSPI(); // Invoke library, pins defined in User_Setup.h
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#define TFT_GREY 0x5AEB // New colour
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void setup(void) {
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tft.init();
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tft.setRotation(1);
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}
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void loop() {
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// Fill screen with grey so we can see the effect of printing with and without
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// a background colour defined
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tft.fillScreen(TFT_GREY);
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// Set "cursor" at top left corner of display (0,0) and select font 2
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// (cursor will move to next line automatically during printing with 'tft.println'
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// or stay on the line is there is room for the text with tft.print)
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tft.setCursor(0, 0, 2);
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// Set the font colour to be white with a black background, set text size multiplier to 1
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tft.setTextColor(TFT_WHITE,TFT_BLACK); tft.setTextSize(1);
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// We can now plot text on screen using the "print" class
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tft.println("Hello World!");
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// Set the font colour to be yellow with no background, set to font 7
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tft.setTextColor(TFT_YELLOW); tft.setTextFont(2);
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tft.println(1234.56);
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// Set the font colour to be red with black background, set to font 4
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tft.setTextColor(TFT_RED,TFT_BLACK); tft.setTextFont(4);
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tft.println((long)3735928559, HEX); // Should print DEADBEEF
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// Set the font colour to be green with black background, set to font 2
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tft.setTextColor(TFT_GREEN,TFT_BLACK);
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tft.setTextFont(2);
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tft.println("Groop");
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// Test some print formatting functions
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float fnumber = 123.45;
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// Set the font colour to be blue with no background, set to font 2
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tft.setTextColor(TFT_BLUE); tft.setTextFont(2);
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tft.print("Float = "); tft.println(fnumber); // Print floating point number
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tft.print("Binary = "); tft.println((int)fnumber, BIN); // Print as integer value in binary
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tft.print("Hexadecimal = "); tft.println((int)fnumber, HEX); // Print as integer number in Hexadecimal
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while(1) yield(); // We must yield() to stop a watchdog timeout.
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}
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