harmony 鸿蒙swtmr

2022-08-09
浏览 (721)

swtmr

Command Function

This command is used to query information about system software timers.

Syntax

swtmr [ID]

Parameters

Table 1 Parameter description

Parameter	Description	Value Range
ID	Specifies the ID of a software timer.	[0, 0xFFFFFFFF]

Usage Guidelines

If no parameter is specified, information about all software timers is displayed.
If the ID parameter is specified, information about the specified software timer is displayed.

Example

Run the following commands:

swtmr
swtmr 1

Output

Example 1: information about all software timers

OHOS # swtmr
SwTmrID     State    Mode    Interval  Count   Arg         handlerAddr
----------  -------  ------- --------- ------- ----------  --------
0x00000000  Ticking  Period   100      77      0x40802a50  0x4037b8a0
SwTmrID     State    Mode    Interval  Count   Arg         handlerAddr
----------  -------  ------- --------- ------- ----------  --------
0x00000001  Ticking  Period   1000     876     0x00000000  0x4037fc04
SwTmrID     State    Mode    Interval  Count   Arg         handlerAddr
----------  -------  ------- --------- ------- ----------  --------
0x00000002  Ticking  Period   100      76      0x00000000  0x403727f4
SwTmrID     State    Mode    Interval  Count   Arg         handlerAddr
----------  -------  ------- --------- ------- ----------  --------
0x00000016  Ticking  NSD      10       6       0x8021e000  0x401fe7d8
SwTmrID     State    Mode    Interval  Count   Arg         handlerAddr
----------  -------  ------- --------- ------- ----------  --------
0x00000079  Ticking  NSD      30000    1749    0x406189d8  0x40160e1c

Example 2: information about software timer 1

OHOS # swtmr 1
SwTmrID     State    Mode    Interval  Count   Arg         handlerAddr
----------  -------  ------- --------- ------- ----------  --------
0x00000001  Ticking  Period   1000     841     0x00000000  0x4037fc04

Table 2 Output description

Parameter	Description
SwTmrID	ID of the software timer.
State	Status of the software timer. The status may be UnUsed, Created, or Ticking.
Mode	Mode of the software timer. The value can be Once, Period, or NSD (one-shot timer that will not be automatically deleted after the timer has expired).
Interval	Number of ticks for the software timer.
Count	Number of times that the software timer has been used.
Arg	Input parameter.
handlerAddr	Address of the callback.

NOTE
- The ID value can be in decimal or hexadecimal format.

If the ID value is within the range of [0, Number of current software timers - 1], the status of the specified software timer is returned. Otherwise, an error code is returned.