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esp32: SEGGER SystemView Tracing Support

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Implements support for system level traces compatible with SEGGER
SystemView tool on top of ESP32 application tracing module.
That kind of traces can help to analyse program's behaviour.
SystemView can show timeline of tasks/ISRs execution, context switches,
statistics related to the CPUs' load distribution etc.

Also this commit adds useful feature to ESP32 application tracing module:
 - Trace data buffering is implemented to handle temporary peaks of events load
This commit is contained in:
Alexey Gerenkov
2017-03-22 06:07:37 +03:00
parent 8eeaef6eb6
commit 8d43859b6a
51 changed files with 7769 additions and 600 deletions
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4
components/freertos/timers.c
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@@ -780,9 +780,9 @@ static void prvCheckForValidListAndQueue( void )
/* Check that the list from which active timers are referenced, and the
queue used to communicate with the timer service, have been
initialised. */
/* Erm, yes, this is a problem. We can't lock until the lock is initialized, and we can't initialize the lock
atomically because we don't have a lock yet... I'm pretty sure doubly-initializing a lock on 2 cpus
atomically because we don't have a lock yet... I'm pretty sure doubly-initializing a lock on 2 cpus
is no problem in the current implementation, but this is not a nice way to solve things. ToDo - improve. */
if( xTimerQueue == NULL ) vPortCPUInitializeMutex( &xTimerMux );