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Applications
Available LED states
State
Solid on
Off
Flash
Use Python to set the state of LEDs
The following example uses an interactive Python session to set the state of all LEDs to flashing:
1. At the shell prompt, use the python command with no parameters to enter an interactive
Python session:
# python
Python 3.10.1 (main, Mar 30 2023, 23:47:13) [GCC 11.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
2. Import the led submodule:
>>> from digidevice import led
3. Import the Led and State objects from the led submodule:
>>> from digidevice.led import Led, State
4. Use led.acquire() to gain control of the all LEDs:
>>> led.acquire(Led.ALL)
5. Use led.set() to set the state of the LEDs:
>>> led.set(Led.ALL, State.FLASH)
6. (Optional) Use led.release() to release the LEDs to system control:
>>> led.release(Led.ALL)
7. Use Ctrl-D to exit the Python session. You can also exit the session using exit() or quit().
The use(led) function
The use(led) function can be used to acquire control of LEDs and then release them back to system
control.
To create a function that acquires control of the power LED, sets it to a state of fast flashing, and then
releases control when the function has completed, use the following code in a python application:
with use(Led.POWER) as pwr:
pwr(State.FLASH)
IX20 User Guide
Attribute name
State.ON
State.OFF
State.FLASH
The use(led) function
830
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