The ThreadX Execution Profile Kit (EPK) provides an infrastructure for applications to dynamically track execution time for threads, Interrupt Service Routines (ISRs), and idle system conditions. This is especially useful for optimization and tuning the application for maximum performance. However, it is also a valuable debug aid. The EPK relies on "hooks" built into the ThreadX scheduling logic in assembly code that are called on thread entry, thread exit, ISR entry, and ISR exit. The EPK routines calculate the time in between such events and store the delta time in global variables as well as members of the TX_THREAD control block. Click here to download a free copy of the EPK User Guide and obtain more information.

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Bring Big System Features to Small RTOS
Devices with Downloadable App Modules
EE Times Article by John Carbone

With a small footprint RTOS, the trick is getting dynamically downloadable applications to efficiently call for RTOS services embodied in a distinct, separately linked piece of code. What’s needed is an interface that delivers services efficiently to applications, while also offering the advantages of dynamic downloading. To provide such an architecture for small RTOS systems, you need an “application module” structure (Figure 4, below). Application modules are collections of one or more application threads, not linked with the kernel, but instead built as a separate executable that is loaded into target memory when needed.



Click here to read the entire article.
 

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Embedded Systems Conference
May 2011 -- Partner Exhibit

Express Logic demonstrated its products during the 3-day exhibit at the Embedded Systems Conference. One of our partner companies, Real-Time Logic, also demonstrated several products that run with ThreadX and NetX, notably a web server (Barracuda) and a “virtual machine” (LUA).



Click here to view our partner website and a summary of their products.

AMD Posts New Profile for Express Logic

The new AMD profile for Express Logic contains a snapshot of the ThreadX Real-Time Operating and a ThreadX demo package that is intended for use with Sage EDK/SmartProbe, and provides a foundation that can be modified to add application-relevant routines and learn about RTOS scheduling. Click here to view the new profile. 

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