[example] Add blue_pill_f103/undefined_irq

examples/generic/undefined_irq/main.cpp

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+/*
+ * Copyright (c) 2019, Niklas Hauser
+ * Copyright (c) 2022, Thomas Sommer
+ *
+ * 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/architecture/interface/assert.hpp>
+#include <modm/debug/logger.hpp>
+#include <string>
+
+using namespace Board;
+using namespace std::string_literals;
+
+using PushButton = GpioInverted<GpioInputA1>;
+
+// ----------------------------------------------------------------------------
+// Set the log level
+#undef	MODM_LOG_LEVEL
+#define	MODM_LOG_LEVEL modm::log::DEBUG
+
+// Create an IODeviceWrapper around the Uart Peripheral we want to use
+modm::IODeviceWrapper< Usart2, modm::IOBuffer::BlockIfFull > loggerDevice;
+
+// Set all four logger streams to use the UART
+modm::log::Logger modm::log::debug(loggerDevice);
+modm::log::Logger modm::log::info(loggerDevice);
+modm::log::Logger modm::log::warning(loggerDevice);
+modm::log::Logger modm::log::error(loggerDevice);
+
+MODM_ISR(EXTI0)
+{ MODM_LOG_DEBUG << "EXTI0 called!" << modm::endl; }
+MODM_ISR(EXTI1)
+{ MODM_LOG_DEBUG << "EXTI1 called!" << modm::endl; }
+MODM_ISR(EXTI2)
+{ MODM_LOG_DEBUG << "EXTI2 called!" << modm::endl; }
+MODM_ISR(EXTI3)
+{ MODM_LOG_DEBUG << "EXTI3 called!" << modm::endl; }
+
+// But we forgot about EXTI4
+// MODM_ISR(EXTI4)
+// { MODM_LOG_DEBUG << "EXTI4 called!" << modm::endl; }
+
+[[maybe_unused]]
+static modm::Abandonment
+core_assertion_handler(const modm::AssertionInfo &info)
+{
+	if (info.name == "nvic.undef"s) {
+		MODM_LOG_ERROR.printf("Ignoring undefined IRQ handler %d!\n", int8_t(info.context));
+		return modm::Abandonment::Ignore;
+	}
+	return modm::Abandonment::DontCare;
+}
+// Comment this line to abandon execution
+MODM_ASSERTION_HANDLER(core_assertion_handler);
+
+int main()
+{
+	Board::initialize();
+	PushButton::setInput(Gpio::InputType::PullUp);
+
+	// initialize Uart2 for MODM_LOG_*
+	Usart2::connect<GpioOutputA2::Tx>();
+	Usart2::initialize<Board::SystemClock, 115200_Bd>();
+
+	// Enable the Interrupt handlers
+	NVIC_EnableIRQ(EXTI0_IRQn);
+	NVIC_EnableIRQ(EXTI1_IRQn);
+	NVIC_EnableIRQ(EXTI2_IRQn);
+	NVIC_EnableIRQ(EXTI3_IRQn);
+	NVIC_EnableIRQ(EXTI4_IRQn);
+	// Give them the highest priority
+	NVIC_SetPriority(EXTI0_IRQn, 0);
+	NVIC_SetPriority(EXTI1_IRQn, 0);
+	NVIC_SetPriority(EXTI2_IRQn, 0);
+	NVIC_SetPriority(EXTI3_IRQn, 0);
+	NVIC_SetPriority(EXTI4_IRQn, 0);
+
+	MODM_LOG_INFO << "Push the Button to trigger EXTI interrupts!" << modm::endl;
+	int ii{0};
+
+	while (true)
+	{
+		if(PushButton::read())
+		{
+			NVIC_SetPendingIRQ(IRQn_Type(int(EXTI0_IRQn) + ii));
+			ii = (ii + 1) % 5;
+			// wait for user reaction
+			modm::delay(500ms);
+		}
+	}
+
+	return 0;
+}

examples/generic/undefined_irq/openocd.cfg

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+# Replace this with your custom programmer
+source [find interface/stlink-v2.cfg]

examples/generic/undefined_irq/project.xml

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+<library>
+  <extends>modm:blue-pill-f103</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/blue_pill_f103/undefined_irq</option>
+    <option name="modm:build:openocd.cfg">openocd.cfg</option>
+  </options>
+  <modules>
+    <module>modm:debug</module>
+    <module>modm:build:scons</module>
+    <module>modm:platform:uart:2</module>
+  </modules>
+</library>