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https://github.com/billthefarmer/sig-gen
Android Signal Generator
https://github.com/billthefarmer/sig-gen
android signal-generator
Last synced: 5 days ago
JSON representation
Android Signal Generator
- Host: GitHub
- URL: https://github.com/billthefarmer/sig-gen
- Owner: billthefarmer
- Created: 2013-06-01T19:05:45.000Z (over 11 years ago)
- Default Branch: master
- Last Pushed: 2024-07-17T10:11:04.000Z (4 months ago)
- Last Synced: 2024-08-02T16:37:16.937Z (3 months ago)
- Topics: android, signal-generator
- Language: Java
- Homepage:
- Size: 1.59 MB
- Stars: 113
- Watchers: 9
- Forks: 24
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
#  Signal Generator [](https://github.com/billthefarmer/sig-gen/actions) [](https://github.com/billthefarmer/sig-gen/releases)
[
](https://f-droid.org/packages/org.billthefarmer.siggen)
A signal generator for Android. The app can be downloaded from [F-Droid](https://f-droid.org/packages/org.billthefarmer.siggen)
and [here](https://github.com/billthefarmer/sig-gen/releases).
* Frequency range 0.1Hz - 25KHz
* Level range 0dB - -80dB
* Set exact frequency
* Frequency bookmarks
* Square wave duty cycle
* Shortcut
* External control
### Using
The frequency knob responds to finger twirling. The duty cycle, fine
frequency and level sliders allow for adjustments of square wave duty
cycle, fine frequency and output level. The frequency knob is also
adjustable using the left and right arrow buttons above. The two
bookmark buttons below the frequency knob show if there are bookmarks,
and will go to the next lower or higher bookmark if it exists.
The toolbar items are, from left to right:
* **Exact** - Prompt for an exact frequency
* **Bookmark** - Save the current frequency as a bookmark
* **Sleep** - Prevent the device from sleeping
To remove a bookmark, go to it and touch the toolbar bookmark button.
### Shortcut
A shortcut may be created to set the parameters shown below. Empty
frequency, duty cycle and level values and unchecked waveform values
will not be included. The mute value will always be included. The name
of the shortcut will be composed from the set values if the name field
is empty.
### External Control
The app may be started, the frequency, level, duty cycle, waveform and
mute set externally by sending a suitable
[Intent](https://developer.android.com/reference/android/content/Intent)
from an automation app. The app package/activity is
`org.billthefarmer.siggen/org.billthefarmer.siggen.Main`. The
parameters may be:
| Parameter | Action/Category/Extra | Type | Value |
| --------- | --------------------- | ---- | ----- |
| Action | android.intent.action.MAIN |
| | android.intent.action.DEFAULT |
| Category | android.intent.category.LAUNCHER |
| | android.intent.category.DEFAULT |
| Extras | org.billthefarmer.siggen.SET_FREQ | int, float | 0.1 – 25000 |
| | org.billthefarmer.siggen.SET_LEVEL | int, float | -80 – 0 |
| | org.billthefarmer.siggen.SET_DUTY | int, float | 0 – 100 |
| | org.billthefarmer.siggen.SET_WAVE | int | 0 = Sine |
| | | | 1 = Square |
| | | | 2 = Sawtooth |
| | org.billthefarmer.siggen.SET_MUTE | boolean | true, false |
Any combination of extras or none may be sent. Subsequent intents sent
will update the values from the included extras.
This may be tested using the [Android Debug
Bridge](https://developer.android.com/studio/command-line/adb#am).
```shell
$ adb shell am start --ef org.billthefarmer.siggen.SET_FREQ 257.3 --ef org.billthefarmer.siggen.SET_LEVEL -25.2 org.billthefarmer.siggen/.Main
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=org.billthefarmer.siggen/.Main (has extras) }
$ adb shell am start --ez org.billthefarmer.siggen.SET_MUTE true org.billthefarmer.siggen/.Main
Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=org.billthefarmer.siggen/.Main (has extras) }
Warning: Activity not started, its current task has been brought to the front
```