[examples] Add Nucleo-L452RE graphics_touch example

with Ili9341 display and 2046 touch controller

examples/nucleo_l452re/graphics_touch/main.cpp

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+/*
+ * Copyright (c) 2021, Henrik Hose
+ * Copyright (c) 2021, Raphael Lehmann
+ *
+ * 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/ili9341_spi.hpp>
+
+#include <modm/driver/touch/touch2046.hpp>
+
+using namespace Board;
+
+namespace tft
+{
+	using DmaRx = Dma1::Channel2;
+	using DmaTx = Dma1::Channel3;
+	using Spi = SpiMaster1_Dma<DmaRx, DmaTx>;
+	//using Spi = SpiMaster1;
+	using Cs = modm::platform::GpioC8;
+	using Sck = modm::platform::GpioA5;
+	using Miso = modm::platform::GpioA6;
+	using Mosi = modm::platform::GpioA7;
+	using DataCommands = modm::platform::GpioC5;
+	using Reset = modm::platform::GpioC6;
+	using Backlight = modm::platform::GpioC9;
+}
+
+modm::Ili9341Spi<
+	tft::Spi,
+	tft::Cs,
+	tft::DataCommands,
+	tft::Reset,
+	tft::Backlight
+> tftController;
+
+namespace touch
+{
+	using Spi = SpiMaster2;
+	using Cs = modm::platform::GpioB3;
+	using Sck = modm::platform::GpioB13;
+	using Miso = modm::platform::GpioB14;
+	using Mosi = modm::platform::GpioB15;
+	//using Interrupt = modm::platform::GpioA10;
+}
+
+modm::Touch2046<touch::Spi, touch::Cs> touchController;
+
+
+int
+main()
+{
+	using namespace modm::literals;
+	Board::initialize();
+    Dma1::enable();
+
+	tft::Spi::connect<
+		tft::Sck::Sck,
+		tft::Miso::Miso,
+		tft::Mosi::Mosi>();
+	tft::Spi::initialize<SystemClock, 40_MHz>();
+	tftController.initialize();
+	tftController.enableBacklight(true);
+
+	touch::Spi::connect<
+		touch::Sck::Sck,
+		touch::Miso::Miso,
+		touch::Mosi::Mosi>();
+	touch::Spi::initialize<SystemClock, 2500_kHz>();
+	modm::touch2046::Calibration cal{
+		.OffsetX = -11,
+		.OffsetY = 335,
+		.FactorX = 22018,
+		.FactorY = -29358,
+		.MaxX = 240,
+		.MaxY = 320,
+		.ThresholdZ = 500,
+	};
+	touchController.setCalibration(cal);
+
+	LedGreen::set();
+
+	tftController.setColor(modm::glcd::Color::black());
+	tftController.setBackgroundColor(modm::glcd::Color::red());
+	tftController.clear();
+
+	tftController.setFont(modm::font::ArcadeClassic);
+	tftController.setColor(modm::glcd::Color::white());
+	tftController.setCursor(10,12);
+	tftController << "(10,10)";
+	tftController.setCursor(150,202);
+	tftController << "(150,200)";
+	tftController.drawLine(5, 10, 15, 10);
+	tftController.drawLine(10, 5, 10, 15);
+	tftController.drawLine(145, 200, 155, 200);
+	tftController.drawLine(150, 195, 150, 205);
+
+	tftController.setColor(modm::glcd::Color::black());
+	tftController.setFont(modm::font::Ubuntu_36);
+
+	int16_t X = 0;
+	int16_t Y = 0;
+	int16_t Z = 0;
+
+	while (true)
+	{
+		LedGreen::set();
+
+		std::tie(X, Y, Z) = RF_CALL_BLOCKING(touchController.getRawValues());
+		tftController.setColor(modm::glcd::Color::red());
+		tftController.fillRectangle({30, 50}, 90, 115);
+		tftController.setColor(modm::glcd::Color::black());
+		tftController.setCursor(0, 50);
+		tftController << "X=" << X;
+		tftController.setCursor(0, 90);
+		tftController << "Y=" << Y;
+		tftController.setCursor(0, 130);
+		tftController << "Z=" << Z;
+
+		tftController.setColor(modm::glcd::Color::red());
+		tftController.fillRectangle({30, 220}, 120, 35);
+		tftController.setColor(modm::glcd::Color::black());
+		if(RF_CALL_BLOCKING(touchController.isTouched())) {
+			std::tie(X, Y) = RF_CALL_BLOCKING(touchController.getTouchPosition());
+			tftController.setCursor(5, 220);
+			tftController << "> (" << X << "," << Y << ")";
+		}
+
+		LedGreen::reset();
+		modm::delay(300ms);
+	}
+
+	return 0;
+}

examples/nucleo_l452re/graphics_touch/project.xml

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+<library>
+  <extends>modm:nucleo-l452re</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/nucleo_l452re/graphics_touch</option>
+  </options>
+  <modules>
+    <module>modm:build:scons</module>
+    <module>modm:driver:ili9341</module>
+    <module>modm:driver:touch2046</module>
+    <module>modm:platform:spi:1</module>
+    <module>modm:platform:spi:2</module>
+    <module>modm:platform:dma</module>
+    <module>modm:docs</module>
+  </modules>
+</library>