Keil RTX51 Manual page 43

RTX Tiny
Interpretation of the debug output:
Task ID
Start
State
Wait for Event
Signal
Timer
Stack
Indicates the task number which is used in the task definition within
the _task_ keyword of the C51 Compiler.
Indicates the start address of the task function.
Indicates the state of the task. State can be one of the following:
State Description
R The task currently being executed is in the R
UNNING
Only one task can be running at a time.
R Tasks which are waiting to be executed are in the R
EADY
S . After the currently running task has finished
TATE
processing, RTX51 Tiny starts the next task that is ready.
W Tasks which are waiting for an event are in the W
AITING
S . If the event occurs, the task is placed into the R
TATE
S .
TATE
D Tasks which are not started are in the D
ELETED
T - Tasks which were interrupted by a round-robin time-out are
IME OUT
placed in the T
R S
EADY TATE
Indicates which events the task is currently waiting for. The events
can be a combination of the following:
Event Description
T The task is in the state W
IMEOUT
value 0. This event is displayed when the os_wait function is
called with the K_TMO or K_IVL event selector.
S The task is in the state W
IGNAL
one. This event is displayed when the os_wait function is
called with the K_SIG event selector.
Indicates the state of the signal flag: 1 for signal set, 0 for signal reset.
Indicates the number of timer ticks which are required for a timeout.
It should be noted that the Timer is free running and only set to the
timeout value when the os_wait function is called with a K_TMO ar-
gument.
Indicates the start address of the local task stack in the IDATA area.
The layout of the RTX-51 tasks is described under Stack Management
earlier in this chapter.
ELETED
- S . This state is equivalent to the
IME OUT TATE
.
until the Timer reaches the
AITING
until the signal flag goes to
AITING
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State.
UNNING
EADY
AITING
EADY
S .
TATE
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