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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/protothreads/pt-1.4/README b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/protothreads/pt-1.4/README new file mode 100644 index 0000000..eeace5d --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/protothreads/pt-1.4/README @@ -0,0 +1,51 @@ +Protothreads are extremely lightweight stackless threads designed for +severely memory constrained systems such as small embedded systems or +sensor network nodes. Protothreads can be used with or without an +underlying operating system. + +Protothreads provides a blocking context on top of an event-driven +system, without the overhead of per-thread stacks. The purpose of +protothreads is to implement sequential flow of control without +complex state machines or full multi-threading. + +Main features: + + * No machine specific code - the protothreads library is pure C + * Does not use error-prone functions such as longjmp() + * Very small RAM overhead - only two bytes per protothread + * Can be used with or without an OS + * Provides blocking wait without full multi-threading or + stack-switching + * Freely available under a BSD-like open source license + +Example applications: + + * Memory constrained systems + * Event-driven protocol stacks + * Small embedded systems + * Sensor network nodes + +The protothreads library is released under an open source BSD-style +license that allows for both non-commercial and commercial usage. The +only requirement is that credit is given. + +The protothreads library was written by Adam Dunkels <adam@sics.se> +with support from Oliver Schmidt <ol.sc@web.de>. + +More information and new versions can be found at the protothreads +homepage: + http://www.sics.se/~adam/pt/ + +Documentation can be found in the doc/ subdirectory. + +Two example programs illustrating the use of protothreads can be found +in this directory: + + example-small.c A small example showing how to use protothreads + example-buffer.c The bounded buffer problem with protothreads + example-codelock.c A code lock with simulated key input + +To compile the examples, simply run "make". + + +Adam Dunkels, 3 June 2006 |