[examples] Adapt for new fault reporter module

examples/README.md

@@ -94,7 +94,7 @@ make gdb
 
 ## Interesting Examples
 
-We have a lot of examples, <!--examplecount-->175<!--/examplecount--> to be
+We have a lot of examples, <!--examplecount-->176<!--/examplecount--> to be
 exact, but here are some of our favorite examples for our supported development
 boards:
 

examples/stm32f469_discovery/hard_fault/main.cpp

@@ -0,0 +1,83 @@
+/*
+ * 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>
+using namespace Board;
+
+__attribute__((noinline))
+void function1(uint32_t bla)
+{
+	static_cast<void>(bla);
+
+	if (Button::read()) {
+		// execute undefined instructed
+		// the hard fault handler will blink the blue LED
+		// or, if the debugger is connected, will trigger a breakpoint
+		asm volatile (".short 0xde00");
+	}
+}
+
+__attribute__((noinline))
+void function2(uint32_t bla, uint8_t blub)
+{
+	static_cast<void>(blub);
+	function1(bla);
+}
+
+void modm_hardfault_entry()
+{
+	// Put hardware in safe mode here
+	Board::Leds::set();
+	// But do not wait forever
+	modm::delayMilliseconds(100);
+	// Do not depend on interrupts in this function (buffered UART etc!)
+}
+
+// ----------------------------------------------------------------------------
+int
+main()
+{
+	Board::initialize();
+	LedOrange::set();
+
+	uint32_t *const ptr = new uint32_t[20*1024];
+	MODM_LOG_INFO << "Can I allocate 20kB? answer: " << ptr << modm::endl;
+
+	if (FaultReporter::hasReport())
+	{
+		MODM_LOG_ERROR << "\n\n=== CrashCatcher === HardFault === CoreDump ===\n\n";
+		for (const uint8_t data : FaultReporter())
+		{
+			MODM_LOG_ERROR << modm::hex << data << modm::flush;
+		}
+		MODM_LOG_ERROR << "\n\n\n" << modm::flush;
+	}
+
+	MODM_LOG_INFO << "Hold Button to cause a Hardfault!" << modm::endl;
+
+	if (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) {
+		// if this LED is on, the debugger is connected
+		LedRed::set();
+		MODM_LOG_INFO << "Debugger connected!" << modm::endl;
+	}
+
+	while (1)
+	{
+		LedGreen::toggle();
+		LedOrange::toggle();
+
+		function2(23, 43);
+
+		modm::delayMilliseconds(250);
+	}
+
+	return 0;
+}

examples/stm32f469_discovery/hard_fault/project.xml

@@ -0,0 +1,10 @@
+<library>
+  <extends>modm:disco-f469ni</extends>
+  <options>
+    <option name=":build:build.path">../../../build/stm32f469_discovery/hard_fault</option>
+  </options>
+  <modules>
+    <module>:platform:fault</module>
+    <module>:build:scons</module>
+  </modules>
+</library>