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Micro-Controller Operating Systems
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Micro-Controller Operating Systems
Micro-Controller Operating Systems (MicroC/OS, stylized as μC/OS, or Micrium OS) is a real-time operating system (RTOS) designed by Jean J. Labrosse in 1991. It is a priority-based preemptive real-time kernel for microprocessors, written mostly in the programming language C. It is intended for use in embedded systems.
MicroC/OS allows defining several functions in C, each of which can execute as an independent thread or task. Each task runs at a different priority, and runs as if it owns the central processing unit (CPU). Lower priority tasks can be preempted by higher priority tasks at any time. Higher priority tasks use operating system (OS) services (such as a delay or event) to allow lower priority tasks to execute. OS services are provided for managing tasks and memory, communicating between tasks, and timing.
The MicroC/OS kernel was published originally in a three-part article in Embedded Systems Programming magazine and the book μC/OS The Real-Time Kernel by Labrosse. He intended at first to simply describe the internals of a portable OS he had developed for his own use, but later developed it as a commercial product in his own company Micrium, Inc. in versions II and III.
In 2016 Micrium, Inc. was acquired by Silicon Laboratories and it was subsequently released as open-source under the Apache license.
Silicon Labs continues to maintain an open-source product named Micrium OS for use on their own silicon and a group of former Micrium, Inc. employees (including Labrosse) provides consultancy and support for both μC/OS and Cesium RTOS, a proprietary fork made just after the open-source release.
Based on the source code written for μC/OS, and introduced as a commercial product in 1998, μC/OS-II is a portable, ROM-able, scalable, preemptive, real-time, deterministic, multitasking kernel for microprocessors, and digital signal processors (DSPs). It manages up to 64 tasks. Its size can be scaled (between 5 and 24 Kbytes) to only contain the features needed for a given use.
Most of μC/OS-II is written in highly portable ANSI C, with target microprocessor-specific code written in assembly language. Use of the latter is minimized to ease porting to other processors.
μC/OS-II was designed for embedded uses. If the producer has the proper toolchain (i.e., C compiler, assembler, and linker-locator[clarification needed]), μC/OS-II can be embedded as part of a product.
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Micro-Controller Operating Systems
Micro-Controller Operating Systems (MicroC/OS, stylized as μC/OS, or Micrium OS) is a real-time operating system (RTOS) designed by Jean J. Labrosse in 1991. It is a priority-based preemptive real-time kernel for microprocessors, written mostly in the programming language C. It is intended for use in embedded systems.
MicroC/OS allows defining several functions in C, each of which can execute as an independent thread or task. Each task runs at a different priority, and runs as if it owns the central processing unit (CPU). Lower priority tasks can be preempted by higher priority tasks at any time. Higher priority tasks use operating system (OS) services (such as a delay or event) to allow lower priority tasks to execute. OS services are provided for managing tasks and memory, communicating between tasks, and timing.
The MicroC/OS kernel was published originally in a three-part article in Embedded Systems Programming magazine and the book μC/OS The Real-Time Kernel by Labrosse. He intended at first to simply describe the internals of a portable OS he had developed for his own use, but later developed it as a commercial product in his own company Micrium, Inc. in versions II and III.
In 2016 Micrium, Inc. was acquired by Silicon Laboratories and it was subsequently released as open-source under the Apache license.
Silicon Labs continues to maintain an open-source product named Micrium OS for use on their own silicon and a group of former Micrium, Inc. employees (including Labrosse) provides consultancy and support for both μC/OS and Cesium RTOS, a proprietary fork made just after the open-source release.
Based on the source code written for μC/OS, and introduced as a commercial product in 1998, μC/OS-II is a portable, ROM-able, scalable, preemptive, real-time, deterministic, multitasking kernel for microprocessors, and digital signal processors (DSPs). It manages up to 64 tasks. Its size can be scaled (between 5 and 24 Kbytes) to only contain the features needed for a given use.
Most of μC/OS-II is written in highly portable ANSI C, with target microprocessor-specific code written in assembly language. Use of the latter is minimized to ease porting to other processors.
μC/OS-II was designed for embedded uses. If the producer has the proper toolchain (i.e., C compiler, assembler, and linker-locator[clarification needed]), μC/OS-II can be embedded as part of a product.