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Author	MatrixTSL
Version	2.0 (Release)
Category	Comms: System

DMX_512 Master component

A serial based communications protocol designed for controlling theatrical equipment such as dimmers, fog machines and intelligent lights. DMX-512 Slave devices are daisy chained together with a final 180R terminating resistor at the end of the chail. DMX requires the signal to be level shifted from VCC and GND to +2.5V and -2.5V.

Examples

DMX Master Example, reads the value of two ports using switch arrays to set the values and then transmits the data in a DMX packet.

DMX Master Example1

DMX Slave Example, captures the first DMX data channel sent from the Master and outputs the value onto a Port using the LED array component.

DMX Slave Example1

Downloadable macro reference

SetDataChannel

Sets the data byte in a data channel

Parameters

UINT Channel

BYTE DataValue

Return value

This call does not return a value

SendDataChain

Transmits the BREAK, MAB and StartCode followed by the contents of the data channels.

Parameters

BYTE StartCode

Return value

This call does not return a value

Initialise

Configures the UART serial interface.

Parameters

This macro has no parameters

Return value

This call does not return a value

Simulation macro reference

This component does not contain any simulation macros

Property reference

Channel

This property is of type Fixed list of ints and can be referenced with the variable name cal_uart::CHANNEL.

UART Channel selector

Software channels are bit banged using generic I/O pins but are not as reliable as hardware channels.

Hardware channels use the selected peripheral on-board the target microcontroller.

Baud Options

This property is of type Fixed list of ints and can be referenced with the variable name cal_uart::BAUD_LIST.

Baud rate option selector

Baud Rate

This property is of type Signed integer and can be referenced with the variable name cal_uart::BAUD.

No additional information

TX

This property is of type Single digital pin and can be referenced with the variable name cal_uart::TX.

Pin to be used for Transmit data

Data Channels

This property is of type Unsigned integer and can be referenced with the variable name DataChannels.

Number of data bytes used by the DMX chain, Max 512 bytes per transmission.

24 Bytes minimum to match minimum 1204us timing requirements, not all channels need to be used.

Scope Traces

This property is of type True or false and can be referenced with the variable name cal_uart::ScopeTraces.

Selects if the scope traces are automatically added to the data recorder window or not.

   Simulation - draws an approximation of the UART data onto the scope trace.

   ICT - sets up the scope trace for incoming data and adds UART packet decoding at the correct BAUD.

Console Data

This property is of type True or false and can be referenced with the variable name cal_uart::ConsoleData.

Selects if the console data is automatically generated or not

Console Columns

This property is of type Unsigned integer and can be referenced with the variable name cal_uart::ConsoleColumns.

Number of characters that can be displayed on a single line of the console.

Data Source

This property is of type Fixed list of ints and can be referenced with the variable name cal_uart::DataSource.

Simulation data source used to allow the component to connect to various remote devices

   Nothing - Simulation data is ignored

   COM port - Routes the communication data to and from a physical or virtual COM port 

   Injector - Routes the communication data via a data injector component on the Panel.