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libopencm3 with PX4 specific minor tweaks. Upstream: git://libopencm3.git.sourceforge.net/gitroot/libopencm3/libopencm3
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hechan/libopencm3
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------------------------------------------------------------------------------ README ------------------------------------------------------------------------------ The libopencm3 project aims to create an open-source firmware library for various ARM Cortex-M3 microcontrollers. Currently (at least partly) supported microcontrollers: - ST STM32F1 series - ST STM32F2 series - ST STM32F4 series - NXP LPC1311/13/42/43 The library is written completely from scratch based on the vendor datasheets, programming manuals, and application notes. The code is meant to be used with a GCC toolchain for ARM (arm-elf or arm-none-eabi), flashing of the code to a microcontroller can be done using the OpenOCD ARM JTAG software. Status and API -------------- The libopencm3 project is currently work in progress. Not all subsystems of the microcontrollers are supported, yet. IMPORTANT: The API of the library is NOT yet considered stable! Please do not rely on it, yet! Changes to function names, macro names etc. can happen at any time without prior notice! Building -------- $ make You may want to override the toolchain (e.g., arm-elf or arm-none-eabi): $ PREFIX=arm-none-eabi make For a more verbose build you can use $ make V=1 Example projects ---------------- The library ships with a few small example projects which illustrate how individual subsystems of the microcontrollers can be configured and used with libopencm3. For flashing the 'miniblink' example (after you built libopencm3 and the examples by typing 'make' at the top-level directory) onto the Olimex STM32-H103 eval board (ST STM32F1 series microcontroller), you can execute: $ cd examples/stm32/f1/stm32-h103/miniblink $ make flash The Makefiles of the examples are configured to use a certain OpenOCD flash programmer, you might need to change some of the variables in the Makefile if you use a different one. You can also flash manually like this: $ openocd -f interface/jtagkey-tiny.cfg -f target/stm32f1x.cfg $ telnet localhost 4444 > reset halt > flash write_image erase foobar.hex > reset Replace the "jtagkey-tiny.cfg" with whatever JTAG device you are using, and/or replace "stm32f1x.cfg" with your respective config file. Replace "foobar.hex" with the file name of the image you want to flash. Installation ------------ $ make install This will install the library in /usr/local. If you want to install it elsewhere, use the following syntax: $ DESTDIR=/opt make install The recommended location is to install into your toolchain directory, e.g. /home/someuser/sat for a toolchain built using the summon-arm-toolchain script from https://github.com/esden/summon-arm-toolchain. $ DESTDIR=~/sat make install Coding style and development guidelines --------------------------------------- See HACKING. License ------- The libopencm3 code is released under the terms of the GNU Lesser General Public License (LGPL), version 3 or later. See COPYING.GPL3 and COPYING.LGPL3 for details. Mailing lists ------------- * Developer mailing list (for patches and discussions): https://lists.sourceforge.net/lists/listinfo/libopencm3-devel * Commits mailing list (receives one mail per 'git push'): https://lists.sourceforge.net/lists/listinfo/libopencm3-commits Website ------- http://libopencm3.org http://sourceforge.net/projects/libopencm3/
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libopencm3 with PX4 specific minor tweaks. Upstream: git://libopencm3.git.sourceforge.net/gitroot/libopencm3/libopencm3
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