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+/*
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+ * Copyright (c) 2006-2023, RT-Thread Development Team
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+ *
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+ * SPDX-License-Identifier: Apache-2.0
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+ *
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+ * Change Logs:
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+ * Date Author Notes
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+ * 2023-05-29 Meco Man port to RTduino
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+ */
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+
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+/*
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+ * Interfacing Arduino with ST7789 TFT display (240x240 pixel).
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+ * Graphics test example.
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+ * This is a free software with NO WARRANTY.
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+ * https://simple-circuit.com/
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+ */
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+
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+/**************************************************************************
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+ This is a library for several Adafruit displays based on ST77* drivers.
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+
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+ Works with the Adafruit 1.8" TFT Breakout w/SD card
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+ ----> http://www.adafruit.com/products/358
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+ The 1.8" TFT shield
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+ ----> https://www.adafruit.com/product/802
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+ The 1.44" TFT breakout
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+ ----> https://www.adafruit.com/product/2088
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+ as well as Adafruit raw 1.8" TFT display
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+ ----> http://www.adafruit.com/products/618
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+
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+ Check out the links above for our tutorials and wiring diagrams.
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+ These displays use SPI to communicate, 4 or 5 pins are required to
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+ interface (RST is optional).
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+
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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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+
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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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+
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+#include <RTduino.h>
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+#include <Adafruit_GFX.h> // Core graphics library
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+#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
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+#include <SPI.h> // Arduino SPI library
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+
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+// ST7789 TFT module connections
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+#define TFT_CS D36 // define chip select pin
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+#define TFT_DC D38 // define data/command pin
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+#define TFT_RST D37 // define reset pin, or set to -1 and connect to Arduino RESET pin
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+#define TFT_PWR D39 // LCD screen power with PWM control
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+
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+// Initialize Adafruit ST7789 TFT library
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+static Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
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+
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+void testlines(uint16_t color)
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+{
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t x=0; x < tft.width(); x+=6)
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+ {
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+ tft.drawLine(0, 0, x, tft.height()-1, color);
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+ }
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+ for (int16_t y=0; y < tft.height(); y+=6)
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+ {
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+ tft.drawLine(0, 0, tft.width()-1, y, color);
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+ }
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+
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t x=0; x < tft.width(); x+=6)
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+ {
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+ tft.drawLine(tft.width()-1, 0, x, tft.height()-1, color);
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+ }
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+ for (int16_t y=0; y < tft.height(); y+=6)
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+ {
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+ tft.drawLine(tft.width()-1, 0, 0, y, color);
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+ }
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+
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t x=0; x < tft.width(); x+=6)
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+ {
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+ tft.drawLine(0, tft.height()-1, x, 0, color);
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+ }
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+ for (int16_t y=0; y < tft.height(); y+=6)
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+ {
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+ tft.drawLine(0, tft.height()-1, tft.width()-1, y, color);
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+ }
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+
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t x=0; x < tft.width(); x+=6)
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+ {
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+ tft.drawLine(tft.width()-1, tft.height()-1, x, 0, color);
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+ }
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+ for (int16_t y=0; y < tft.height(); y+=6)
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+ {
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+ tft.drawLine(tft.width()-1, tft.height()-1, 0, y, color);
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+ }
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+}
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+
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+void testdrawtext(char *text, uint16_t color)
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+{
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+ tft.setCursor(0, 0);
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+ tft.setTextSize(2);
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+ tft.setTextColor(color);
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+ tft.setTextWrap(true);
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+ tft.print(text);
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+}
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+
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+void testfastlines(uint16_t color1, uint16_t color2)
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+{
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t y=0; y < tft.height(); y+=5)
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+ {
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+ tft.drawFastHLine(0, y, tft.width(), color1);
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+ }
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+ for (int16_t x=0; x < tft.width(); x+=5)
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+ {
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+ tft.drawFastVLine(x, 0, tft.height(), color2);
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+ }
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+}
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+
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+void testdrawrects(uint16_t color)
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+{
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t x=0; x < tft.width(); x+=6)
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+ {
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+ tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color);
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+ }
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+}
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+
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+void testfillrects(uint16_t color1, uint16_t color2)
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+{
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+ tft.fillScreen(ST77XX_BLACK);
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+ for (int16_t x=tft.width()-1; x > 6; x-=6)
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+ {
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+ tft.fillRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color1);
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+ tft.drawRect(tft.width()/2 -x/2, tft.height()/2 -x/2 , x, x, color2);
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+ }
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+}
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+
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+void testfillcircles(uint8_t radius, uint16_t color)
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+{
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+ for (int16_t x=radius; x < tft.width(); x+=radius*2)
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+ {
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+ for (int16_t y=radius; y < tft.height(); y+=radius*2)
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+ {
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+ tft.fillCircle(x, y, radius, color);
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+ }
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+ }
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+}
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+
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+void testdrawcircles(uint8_t radius, uint16_t color)
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+{
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+ for (int16_t x=0; x < tft.width()+radius; x+=radius*2)
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+ {
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+ for (int16_t y=0; y < tft.height()+radius; y+=radius*2)
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+ {
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+ tft.drawCircle(x, y, radius, color);
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+ }
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+ }
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+}
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+
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+void testtriangles(void)
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+{
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+ tft.fillScreen(ST77XX_BLACK);
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+ int color = 0xF800;
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+ int t;
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+ int w = tft.width()/2;
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+ int x = tft.height()-1;
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+ int y = 0;
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+ int z = tft.width();
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+ for(t = 0 ; t <= 15; t++)
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+ {
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+ tft.drawTriangle(w, y, y, x, z, x, color);
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+ x-=4;
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+ y+=4;
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+ z-=4;
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+ color+=100;
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+ }
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+}
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+
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+void testroundrects(void)
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+{
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+ tft.fillScreen(ST77XX_BLACK);
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+ int color = 100;
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+ int i;
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+ int t;
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+ for(t = 0 ; t <= 4; t+=1)
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+ {
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+ int x = 0;
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+ int y = 0;
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+ int w = tft.width()-2;
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+ int h = tft.height()-2;
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+ for(i = 0 ; i <= 16; i+=1)
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+ {
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+ tft.drawRoundRect(x, y, w, h, 5, color);
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+ x+=2;
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+ y+=3;
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+ w-=4;
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+ h-=6;
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+ color+=1100;
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+ }
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+ color+=100;
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+ }
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+}
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+
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+void tftPrintTest(void)
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+{
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+ tft.setTextWrap(false);
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+ tft.fillScreen(ST77XX_BLACK);
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+ tft.setCursor(0, 30);
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+ tft.setTextColor(ST77XX_RED);
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+ tft.setTextSize(1);
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+ tft.println("Hello World!");
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+ tft.setTextColor(ST77XX_YELLOW);
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+ tft.setTextSize(2);
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+ tft.println("Hello RT-Thread!");
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+ tft.setTextColor(ST77XX_GREEN);
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+ tft.setTextSize(3);
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+ tft.println("Hello RTduino!");
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+ tft.setTextColor(ST77XX_BLUE);
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+ tft.setTextSize(4);
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+ tft.print(1234.567);
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+ delay(1500);
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+ tft.setCursor(0, 0);
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+ tft.fillScreen(ST77XX_BLACK);
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+ tft.setTextColor(ST77XX_WHITE);
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+ tft.setTextSize(0);
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+ tft.println("Hello World!");
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+ tft.setTextSize(1);
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+ tft.setTextColor(ST77XX_GREEN);
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+ tft.print(PI, 6);
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+ tft.println(" Want pi?");
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+ tft.println(" ");
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+ tft.print(8675309, HEX); // print 8,675,309 out in HEX!
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+ tft.println(" Print HEX!");
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+ tft.println(" ");
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+ tft.setTextColor(ST77XX_WHITE);
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+ tft.println("Sketch has been");
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+ tft.println("running for: ");
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+ tft.setTextColor(ST77XX_MAGENTA);
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+ tft.print(millis() / 1000);
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+ tft.setTextColor(ST77XX_WHITE);
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+ tft.print(" seconds.");
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+}
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+
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+void mediabuttons(void)
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+{
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+ // play
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+ tft.fillScreen(ST77XX_BLACK);
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+ tft.fillRoundRect(25, 10, 78, 60, 8, ST77XX_WHITE);
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+ tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_RED);
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+ delay(500);
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+ // pause
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+ tft.fillRoundRect(25, 90, 78, 60, 8, ST77XX_WHITE);
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+ tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_GREEN);
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+ tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_GREEN);
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+ delay(500);
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+ // play color
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+ tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_BLUE);
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+ delay(50);
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+ // pause color
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+ tft.fillRoundRect(39, 98, 20, 45, 5, ST77XX_RED);
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+ tft.fillRoundRect(69, 98, 20, 45, 5, ST77XX_RED);
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+ // play color
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+ tft.fillTriangle(42, 20, 42, 60, 90, 40, ST77XX_GREEN);
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+}
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+
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+static void st7789_setup(void)
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+{
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+ Serial.begin();
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+ Serial.println(F("Hello! ST77xx TFT Test"));
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+
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+ // if the display has CS pin try with SPI_MODE0
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+ tft.init(240, 240, SPI_MODE0); // Init ST7789 display 240x240 pixel
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+ analogWrite(TFT_PWR, 255); // set the PWM background LED as max
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+
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+ // if the screen is flipped, remove this command
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+ tft.setRotation(2);
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+
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+ Serial.println(F("Initialized"));
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+
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+ uint16_t time = millis();
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+ tft.fillScreen(ST77XX_BLACK);
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+ time = millis() - time;
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+
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+ Serial.print("Fill the screen spend: ");
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+ Serial.print(time, DEC);
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+ Serial.print(" ms");
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+
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+ testdrawtext((char *)"RTduino is an open source project which is compatible with Arduino APIs so that RT-Thread beginners can easily get start to use RT-Thread through Arduino APIs, which significantly reduces the difficulty of learning RT-Thread.", ST77XX_WHITE);
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+ delay(1500);
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+
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+ // tft print function!
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+ tftPrintTest();
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+ delay(4000);
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+
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+ // a single pixel
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+ tft.drawPixel(tft.width()/2, tft.height()/2, ST77XX_GREEN);
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+ delay(500);
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+
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+ // line draw test
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+ testlines(ST77XX_YELLOW);
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+ delay(500);
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+
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+ // optimized lines
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+ testfastlines(ST77XX_RED, ST77XX_BLUE);
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+ delay(500);
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+
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+ testdrawrects(ST77XX_GREEN);
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+ delay(500);
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+
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+ testfillrects(ST77XX_YELLOW, ST77XX_MAGENTA);
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+ delay(500);
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+
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+ tft.fillScreen(ST77XX_BLACK);
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+ testfillcircles(10, ST77XX_BLUE);
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+ testdrawcircles(10, ST77XX_WHITE);
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+ delay(500);
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+
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+ testroundrects();
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+ delay(500);
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+
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+ testtriangles();
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+ delay(500);
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+
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+ mediabuttons();
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+ delay(500);
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+
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+ Serial.println("done");
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+ delay(1000);
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+}
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+
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+static void st7789_loop(void)
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+{
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+ tft.invertDisplay(true);
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+ delay(500);
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+ tft.invertDisplay(false);
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+ delay(500);
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+}
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+RTDUINO_SKETCH_LOADER("ST7789", st7789_setup, st7789_loop);
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