freeRTOS traceMOVED_TASK_TO_DELAYED_LIST vs traceMOVED_TASK_TO_OVERFLOW_DELAYED_LIST() vs traceMOVED_TASK_TO_SUSPENDED_LIST(pxTCB)

Lukasz Antczak · Sep 15th 2016, 11:38am

Hi,

First I would like to thank you for great free tool. You make world better place to live

I'm using SystemView with FreeRTOS 9.0.0.
I have a question regarding following trace macros:

#define traceMOVED_TASK_TO_DELAYED_LIST() SEGGER_SYSVIEW_OnTaskStopReady((U32)pxCurrentTCB, (1u << 2))
#define traceMOVED_TASK_TO_OVERFLOW_DELAYED_LIST() SEGGER_SYSVIEW_OnTaskStopReady((U32)pxCurrentTCB, (1u << 2))
#define traceMOVED_TASK_TO_SUSPENDED_LIST(pxTCB) SEGGER_SYSVIEW_OnTaskStopReady((U32)pxTCB, ((3u << 3) | 3))

1) How SystemView interprets cause of stop (second parameter)?
2) What are possible values?
3) Why traceMOVED_TASK_TO_DELAYED_LIST() and traceMOVED_TASK_TO_OVERFLOW_DELAYED_LIST() are using the same cause. As I understand the traceMOVED_TASK_TO_OVERFLOW_DELAYED_LIST() means that task suspend time expired. Would be nice to mark it in SystemView APP.
4) Is there possibility to redefine eventsID 0-31 in SystemView APP (description file) to print additional information (e.g I would like to add to traceMOVED_TASK_TO_DELAYED_LIST() the ticksToWait)

Best Regards
Lukasz Antczak

SEGGER - Johannes · Sep 16th 2016, 2:38pm

Hi,

Thanks for the "flowers"

The definition of task states can be configured in the description file, i.e. SYSVIEW_FreeRTOS.txt in the SystemView installation directory.

If no task states are configured SystemView uses following default states, derived from the embOS task states:

Source Code

Cause = (State & 0xF8):
0 << 3: Ready
1 << 3: Wait for event
2 << 3: Wait for sema zero
3 << 3: Waiting
4 << 3: Wait for sema not zero
6 << 3: Wait for Queue not empty
7 << 3: Wait for mailbox not full
8 << 3: Wait for mailbox not empty
9 << 3: Wait for event object
10 << 3: Wait for Queue not full
20 << 3: Wait for Memory pool
if (state & 4): with Timeout
if (State & 3): suspended

Display All

For the Task State description have a look at the SystemView manual, chapter 10.1.5.2

Best regards
Johannes

Source Code

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