threadx Snapshot

Small-footprint (small as 2KB, automatic scaling)
Fast execution (sub microsecond context switch)
Supports all popular processors and tools (see below)
TraceX system analysis support
Advanced Technology:

Preemption-Threshold™
Event Chaining™
Performance Metrics
Execution Profiling
Run-time and Static Stack Analysis
Multicore Support (SMP and AMP)
Downloadable Application Modules
Memory Protection for Downloadable Application Modules

Extensive ThreadX ecosystem
Safety Certifications (DO-178B, FDA510(k), IEC61508, etc)
Deployed in over 1,000,000,000 devices
Full Source Code
Royalty-Free

threadx Processor Support

News

Express Logic Brings High Performance to Cortex-M4 with ThreadX® RTOS and NetX Duo™ TCP/IP Stack

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PolyCore Software And Express Logic Expand Cooperation to Ease Multicore Software Development

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ThreadX® RTOS Adds Support for Xilinx Zynq™-7000 Extensible Processing Platform

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IAR Systems Offers Express Logic’s ThreadX® RTOS with IAR Embedded Workbench® IDE

Best-in-class tools and RTOS tightly integrated to create blended embedded… [+]

Microchip PIC24/dsPIC

ThreadX/MCU Edition for Microchip PIC24/dsPIC

Highlights

Complete Microchip PIC/dsPIC support, including PIC24H, 24F, dsPIC30, dsPIC33 architectures

Fully Integrated with the MPLAB(r) Tools

Reasonable pricing

No Royalties

Easy to use and powerful services

Responsive Technical Support

Up to 10 Threads, Queues, Event Flags, Timers, Semaphores, Mutexes, Block Pools, and Byte Pools

Flexible memory usage

Timeout available on all thread suspension

Low-overhead Application Timers

Size scales automatically

Picokernel architecture for size and speed

Small footprint (as low as 1.6 Kbytes)

Fast Execution (6.6us context switch@20MHz)

Improve Your PIC24/dsPIC Development

Let our extensive experience with real-time operating systems help your product development. ThreadX/MCU, our high-performance real-time kernel, optimized for microcontrollers and digital signal controllers, helps improve your product's quality and its time-to-market. In addition, using ThreadX/MCU makes it easier to enhance your product in the future.

PIC Optimizations

ThreadX/MCU optimizes context switching on the PIC24/dsPIC. When context switching occurs inside of a ThreadX service call, only the registers preserved across function calls are saved as part of the thread's context, i.e. registers w8-w14.

A similar technique is used in interrupt handling. On the front end of interrupt service routines, only the compiler's scratch registers are saved initially (registers w0-w7, RCOUNT, and PSVPAG). The full register set is saved only if thread preemption is required.

Flexible Interrupt Model

All interrupt processing uses a separate system stack and as mentioned previously, full context saving/restoring is performed only when thread preemption is necessary.