[examples] RpPico with ST7789 display

examples/rp_pico/st7789/main.cpp

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+/*
+ * Copyright (c) 2022, Nikolay Semenov
+ *
+ * This file is part of the modm project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+// ----------------------------------------------------------------------------
+
+#include <modm/board.hpp>
+#include <modm/driver/display/st7789.hpp>
+#include <modm/driver/display/st7789/st7789_spi_interface.hpp>
+#include <modm/processing/timer/periodic_timer.hpp>
+#include <modm/src/modm/ui/display/image/skull_64x64.hpp>
+
+struct Display
+{
+	using Spi = SpiMaster0;
+	using Cs = modm::platform::Gpio17;
+	using Sck = modm::platform::Gpio18;
+	using Miso = modm::platform::GpioUnused;
+	using Mosi = modm::platform::Gpio19;
+	using DataCommands = modm::platform::Gpio20;
+	using Reset = modm::platform::Gpio21;
+	using Backlight = modm::platform::GpioUnused;
+
+	using Interface = modm::St7789SPIInterface<Spi, Cs, Reset, DataCommands>;
+};
+
+constexpr std::array<modm::color::Rgb565, 10> colors{
+	modm::color::html::Black,  modm::color::html::Red,  modm::color::html::Green,
+	modm::color::html::Blue,   modm::color::html::Cyan, modm::color::html::Magenta,
+	modm::color::html::Yellow, modm::color::html::Gray, modm::color::html::Orange,
+	modm::color::html::White,
+};
+
+uint32_t
+rand(uint32_t limit)
+{
+	static uint32_t rand_next = 0;
+	rand_next = rand_next * 1103515245 + 12345;
+	return (uint32_t)(rand_next / 65536) % limit;
+}
+
+int
+main()
+{
+	Board::initialize();
+
+	Uart0::connect<GpioOutput1::Rx>();
+	Uart0::initialize<Board::SystemClock, 115200_Bd>();
+
+	modm::IODeviceWrapper<Uart0, modm::IOBuffer::BlockIfFull> terminal;
+
+	Display::Spi::connect<Display::Sck::Sclk, Display::Mosi::Tx>();
+	Display::Spi::initialize<Board::SystemClock, 62_MHz>();
+
+	using LCD = modm::St7789<Display::Interface, 240, 240>;
+	LCD lcd;
+
+	lcd.initialize();
+
+	lcd.clear();
+	lcd.drawImage({88, 88}, modm::accessor::asFlash(bitmap::skull_64x64));
+
+	while (true)
+	{
+		char c = 0;
+		if (terminal.read(c))
+		{
+			if ('0' <= c && c <= '9')
+			{
+				lcd.clear(colors[c - '0'].color);
+			} else if (c == 'f')
+			{
+				for (size_t i = 0; i < 1000; ++i)
+				{
+					lcd.setColor(colors[i % colors.size()]);
+					lcd.drawCircle({rand(lcd.getWidth()), rand(lcd.getHeight())}, 16);
+				}
+			} else if (c == 'r')
+			{
+				static uint8_t orientation = 0;
+				lcd.setOrientation((LCD::Driver::Orientation)(orientation++ % 4));
+			} else if (c == 's' || c == 'S')
+			{
+				lcd.setSleep(c == 's');
+			} else if (c == 'i' || c == 'I')
+			{
+				lcd.setIdle(c == 'i');
+			} else if (c == 'o' || c == 'O')
+			{
+				c == 'o' ? lcd.turnOff() : lcd.turnOn();
+			} else if (c == 'v' || c == 'V')
+			{
+				lcd.setInversion(c == 'V');
+			} else if (c == 'b' || c == 'B')
+			{
+				lcd.setRgbBgrOrder(c == 'b' ? LCD::Driver::RgbBgrOrder::BGR
+											: LCD::Driver::RgbBgrOrder::RGB);
+			}
+		}
+	}
+
+	return 0;
+}

examples/rp_pico/st7789/project.xml

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+<library>
+  <extends>modm:rp-pico</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/rp_pico/st7789</option>
+  </options>
+  <modules>
+    <module>modm:platform:spi:0</module>
+    <module>modm:platform:uart:0</module>
+    <module>modm:processing:timer</module>
+    <module>modm:driver:st7789</module>
+    <module>modm:build:scons</module>
+  </modules>
+</library>