[example] Add IS31FL3733 driver on STM32G071

examples/nucleo_g071rb/matrix/main.cpp

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+/*
+ * Copyright (c) 2019, Niklas Hauser
+ *
+ * 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/processing.hpp>
+#include <modm/driver/display/is31fl3733.hpp>
+
+using namespace Board;
+
+using PinReset = GpioC8;
+using PinSda = GpioA11;
+using PinScl = GpioA12;
+
+using I2cInstance = BitBangI2cMaster<PinScl, PinSda>;
+static modm::Is31fl3733<I2cInstance> driver(modm::is31fl3733::addr());
+
+// ----------------------------------------------------------------------------
+int
+main()
+{
+	Board::initialize();
+	LedD13::setOutput(modm::Gpio::Low);
+
+	MODM_LOG_ERROR   << "error"   << modm::endl;
+
+	// Reset the I2C interface of the chip
+	PinReset::setOutput(modm::Gpio::High);
+	modm::delay(20ms);
+	PinReset::setOutput(modm::Gpio::Low);
+
+	I2cInstance::initialize<SystemClock, 400_kHz>();
+	I2cInstance::connect<PinScl::BitBang, PinSda::BitBang>();
+
+	RF_CALL_BLOCKING(driver.reset());
+	RF_CALL_BLOCKING(driver.clearSoftwareShutdown());
+	RF_CALL_BLOCKING(driver.setGlobalCurrent(1));
+
+	driver.enableAll();
+	RF_CALL_BLOCKING(driver.writeOnOff());
+
+	uint8_t pwm{0};
+	while (true)
+	{
+		for (uint8_t y=0, pi=pwm; y<16; y++) {
+			for (uint8_t x=0; x<12; x++) {
+				driver.setPwm(x, y, pi++);
+			}
+		}
+		RF_CALL_BLOCKING(driver.writePwm());
+		modm::delay(10ms);
+		pwm++;
+	}
+
+	return 0;
+}

examples/nucleo_g071rb/matrix/project.xml

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+<library>
+  <extends>modm:nucleo-g071rb</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/nucleo_g071rb/matrix</option>
+  </options>
+  <modules>
+    <module>modm:platform:gpio</module>
+    <module>modm:platform:i2c.bitbang</module>
+    <module>modm:driver:is31fl3733</module>
+    <module>modm:build:scons</module>
+  </modules>
+</library>