By default the mutexes that are used by the framework do not use the Priority Inheritance method. When the access to the bus is started, the first caller will lock the bus by obtaining the mutex and will relinquish it after the bus access is complete. This might cause the higher priority thread to be held off until the lower priority access is done. This in itself will not cause a deadlock in your system. You can include the ThreadX source and enable Event Trace to use TraceX to analyze what is going on event wise in you system. Also, what version of SSP are you using? There are issues in SSP 1.1.3 and earlier that have been fixed with SSP 1.2.0 which will be availabe in March. (The beta version of 1.2 also has these issues.) -Gary
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