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Couldn't find the right Lua function? Ask Screvle to develop it for you or purchase the source code and create your own functions.
Screvle provides the following non-standard Lua API:
| General | Description |
|---|---|
System related functions. | |
Schedule related functions. | |
| settings | Create/Read/Write Application Settings stored on the SD-card. |
| gpio | Modify GPIO values and configuration. |
| io, lfs | Filesystem access. |
| timer | Software timers. |
| led | Control backlight and RGB LED brightness. |
| math | Mathematical functions. |
| bit | Bitwise operations for number manipulation. |
| log | Logging messages to files. |
| exti | Extended interrupt configuration. |
| timeout | Timeout API |
| buzzer | Buzzer API |
| hwbutton | Hardware Button |
| Connectivity | Description |
|---|---|
| net | Check and modify network settings. |
| http | Execute HTTP Client requests. |
| json | Convert JSON strings into Lua tables and vice-versa. |
| base64 | Encode/decode base64 strings. |
| mqttclient | MQTT Pub/Sub client. |
| smtp | Send emails. |
| TCP/IP | TCP/IP Connection. |
| UDP | UDP Connection. |
| AES | Advanced Encryption Standard |
| MD5 | calculate the cryptographic hashfunctions |
| wifi | Wifi connection. |
| GUI | Description |
|---|---|
microGraphics Framework module to used create all the GUI widgets. | |
| graphics | 2D Drawing functions for custom widgets. |
| Widget | Generic widget. All other widgets are derived from Widget. |
| Button | Enables user-actions via touchscreen or physical buttons. |
| Label | Single line text field. |
| TextArea | Multi-line text field. |
| Slider | Slider to enter or display a numeric value. |
| Switch | On/Off switch. |
| ItemView | Displays a list of Items |
| Item | Single entry in an ItemView |
| Image | Displays a TGA image stored on the SD-Card |
| Panel | Collection of sub-widgets. |
| Dialog | Dialog style Panel with title, border, and buttons. |
| ListEditor | Allows picking a value from a list of values. |
| NumberEditor | Allows entering a numeric value. |
| IPEditor | Allows entering a IP address. |
| IconBar | Display Icons on the screen. |
| Peripheral | Description |
|---|---|
| Peripheral | Open, read from, write to, and configure various IO interfaces. |
| adc | Analog to Digital Converter |
| dac | Digital to Analog Converter |
| uart | Universal Asynchronous Receiver/Transmitter (Serial Port) |
| i2c | Inter-Integrated Circuit Interface |
| spi | Serial Peripheral Interface |
| can | Controller Area Network Interface |
| pwm | Pulse-Width Modulation Output |
| counter | Counter input |
| qe | Quadrature Encoder |