altimeter - AVR code for an in-progress pressure altimeter

	Commit message (Collapse)	Author	Age
*	Move test runner to build/native	David Phillips	2021-02-13
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*	Add dep files to Makefile	David Phillips	2021-02-13
\| \| \| \|	Also includes WIP data manager code.
*	Add test runner	David Phillips	2021-02-13
\| \| \| \| \| \| \| \| \| \| \| \| \| \|	This patch adds a "magic" test runner which discovers all test cases in the executable into which it is linked. This is achieved through the use of a special macro used to declare tests, so that they are added onto a linker- generated list. The linker list logic is largely taken from U-Boot source code, with minor some tweaks made. This linker-generated list is then used at runtime in order to pick out every test case which can be run, resulting in a cross-file "suite" of unity unit tests, rather than separate test executables per module. A sample test module, test_test.c is provided to illustrate the test runner's ability to correctly discover tests across multiple translation units.
*	Print MCU fill as well as section size	David Phillips	2021-02-08
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*	Print cross ELF section size on make	David Phillips	2021-02-08
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*	Add basic unit testing for util.c	David Phillips	2021-02-08
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*	Add documentation to Makefile	David Phillips	2021-02-08
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*	Use float-enabled printf implementation	David Phillips	2020-12-20
\| \| \| \| \|	I hadn't realised there is a float-enabled printf implementation in AVR libc, so let's use that instead of our own hack.
*	Remove unneeded variables	David Phillips	2020-12-13
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*	Set a 2 second watchdog timer	David Phillips	2020-12-13
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*	Initial prototype	David Phillips	2020-12-13
	This patch adds a skeleton of AVR code for a "simulator" target (atmega2560) and for the real intended hardware target (atmega32u4). The simulator target is one that is supported by the QEMU AVR emulator, while the 32u4 is currently not.