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pierre drezet edited this page Aug 20, 2025 · 1 revision

Detects when a key is pressed and asserts the character represented by the key and the ASCII or extended key code of the key.

When a non-control key is pressed the [Out]key event fires and asserts the ASCII or extended key code to the [Out]ascii port and asserts the character represented by the key to the [Out]char port.

The ASCII key codes asserted range from 32 (space) to 126 (~) inclusive. Please refer to http://www.asciitable.com/ for the full table of codes.

Control keys are also detected by this Function Block and integer codes are asserted on [Out]control [Out]id ports.

The control key IDs are listed below:

ID Control Key
1 Enter
3 Backspace
2 exit/Escape
4 Forward tab
5 Back tab (Not yet implemented)
10 Cursor key up
11 Cursor key down
12 Cursor key left
13 Cursor key right
14 Page up
15 Page Down
16 Rnd
17 Home
18 Menu
101 F1
102 F2
103 F3
104 F4
105 F5
106 F6
107 F7
108 F8
109 F9
110 F10
111 F11
112 F12
111 Left Shift
20 Right Shift
21 Left Ctrl
22 Right Ctrl
23 Alt (left)
24 Alt (right)
name type default min. max. description
In Ev.
Data In
Data Out
ascii

Data Output, ASCII code of key pressed.

char

Data Output, character represented by key pressed.

id

Data Output, ID of the control key pressed.

Out Ev.
key

Output Event, fires when a non-control key is pressed.

control

Output Event, fires when a control key is pressed.

State Machine Stateless.
Toolbox GUI/Level1. Version v2.1.
Licence Type MPL2.0 Component Supplier inx ltd.
Minumum DCC A0000 Profiles None.

copyright inx limited, UK, 2025 - join the inxware community @appland

Core Components

Events & Triggers

State Management

  • STATE - Represents a State in Lucid
  • state_condition - Event driven state condition --> transition and actions
  • state_debug - To debug state machines this function block is required.
  • state_manager - Each state machine is defined by a State Manager

Array & Data Structures

Buffers & Queues

Primitive Data Constants

Data Converters

Boolean Logic

Mathematics

Alebraic Evaluation

Mathematical Operators

Inequalities

Trigonometry

Other Functions

Data Selection

  • indexed_mux_int - Indexed Mux Int
  • indexed_mux_str - Indexed Mux String
  • map_int - Map Int
  • mux_1b - mux_1b
  • mux_1i - mux_1i
  • mux_1r - mux_1r
  • mux_1s - mux_1s
  • mux_2b - MultiplexTwo Input Bool
  • mux_2i - MultiplexTwo Input Int
  • mux_2r - MultiplexTwo Input Real
  • mux_2s - MultiplexTwo Input String
  • mux_3b - MultiplexThree Input Bool
  • mux_3i - MultiplexThree Input Int
  • mux_3r - MultiplexThree Input Real
  • mux_3s - MultiplexThree Input String
  • mux_4b - MultiplexFour Input Bool
  • mux_4i - MultiplexFour Input Int
  • mux_4r - MultiplexFour Input Real
  • mux_4s - MultiplexFour Input String
  • mux_8b - 8-Input Indexed Boolean Multiplexer Function Block
  • mux_8i - 8-Input Indexed Integer Multiplexer Function Block
  • mux_8r - 8-Input Real Number Multiplexer Function Block
  • mux_8s - Number Multiplexer Function Block
  • num_mux - Numeric Multiplexer Function Block

Data Processing & Parsers

Database & Storage

Demultiplexers

String Functions

File Operations

Basic IO Components

GPIO & Hardware I/O

Graphics and UI Components

GUI & User Interface

User Input

  • keypress - Reads key presses & control keys

Unity & Web Integration

  • inx-unity - Provides media and animation widget interface
  • unity2 - Unity 3D
  • webkit - JavaScript/WebKit Interface (Obsolete)

Language & Localization

Media Components

Audio & Media

Digital TV & Media Control

Communications Components

TCPIP Network & Communication

Wireless & LPWAN Networks

Fieldbus Comms

Digital Signal Processing

  • ADC Polled Analogue to Digital converter.
  • ADC_continuous Advanced ADC supporting clocked ISR modes and advanced signal averaging.
  • FFT8 Fast Fourier Transform of 8 bit binary input data
  • FIR8 Finite Impulse Response filter for 8 bit binary data.
  • IIR8 Infinite Impulse Response filter for 8 bit binary data.
  • [calibrate](ADC calibrate) - Calibrates the ADCs

Control Systems Components

PID Controllers

Machine Learning & Machine Vision

  • mv_camera - Provides access to camera input data image streams
  • mv_idsplay - Renders camera image streams.
  • mv_resize - Resizes an image using given interpolation method
  • mv_crop - Crops and image width and height at a give offset
  • mv_apriltag_reader Plain Old Prgramming AprilTag Reader
  • ml_tflite_inference Machine learning model inference.
  • ml_osvm Online iterative machine learning (training& inference).

Platform Components

System Utilities

  • reboot - Reboot the device
  • rtc - RealTimeClock - provdes date/time from RTC device or OS.
  • rtinfo - RuntimeInfo (e.g. MAC/IP address, memory,... )
  • scheduler - Weekly Scheduler
  • system_exec - Executes linux shell commands
  • rng - Random Number Generator (may use hardware RNG)

Time Components

Application Management

Over the Air Update (OTA)

  • ota - OTA Function Block for updating firmware
  • ota_data_parser - Assembles OTA data files from Devman.

Non-functional Components

Some function blocks that can be used Lucid app are for visual/organisation purposes only and do not translate into any executable ert-components.

Sub System Input/Output Ports

-Note this file is autogenerated from ert-config help files and may not currently be complete or properly categorised!

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