72 lines
2.0 KiB
Plaintext
72 lines
2.0 KiB
Plaintext
Chopstx - Threads and only Threads
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Version 2.2
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2020-02-26
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Niibe Yutaka
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Flying Stone Technology
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What's Chopstx?
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===============
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Chopstx is an RT thread library for STM32F103 and GD32F103 (ARM
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Cortex-M3), STM32F030 (ARM Cortex-M0), MKL27Z (ARM Cortex-M0plus),
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STM32L432 (ARM Cortex-M4), GD32VF103 (RISC-V Bumblebee) and emulation
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on GNU/Linux.
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While most RTOSes come with many features, drivers, and protocol
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stacks, Chopstx just offers a simple RT thread library.
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With Chopstx, interrupt handling is also done by a thread. This
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enables coherent code for ease of maintenance.
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While threads are important, we don't need more threads than
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necessary. Chopstx provides a feature of poll, so that we can
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handle multiple events by a single thread.
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Note that this library is _not_ related to the hand game:
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https://en.wikipedia.org/wiki/Chopsticks_(hand_game)
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Thanks to Yao Wei and Enrico Zini for giving me an opportunity
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visiting the wiki page above, when my children were playing the game.
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License
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=======
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It is distributed under GNU General Public Licence version 3 or later
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(GPLv3+), with additional permission. Please see COPYING and
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EXCEPTION.
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Example code
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============
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We have some examples in this distribution; Useful ones are LED
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blinker and USB CDC-ACM device. For STM32F103, you can build it USB
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CDC-ACM demo by:
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$ cd example-cdc
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$ ln -sf ../board/board-olimex-stm32-h103.h board.h
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$ make
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If you want to try GD32F103, Add -DMHZ=96 to DEFS in Makefile.
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For a specific board named FSM-55, an example of LED matrix dynamic
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driver is provided. See the directory: example-fsm-55.
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For STM32 Primer2, see the directory: example-primer2.
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Future Works
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============
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Convenience function to determine the bottom of thread stack,
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configuration of thread size by compiler's output would be next things
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to be done.
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Experimental SMP port for Cortex-A7 is under development. For SMP,
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more careful considerations for shared access to objects of struct
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chx_pq is needed. So, modifications required will not be small.
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--
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