Legacy Serial Read

Read input data for baseboard serial communications

Since R2020b

• 

Libraries:
Simulink Real-Time / RS232 / Mainboard

Description

The Legacy Serial Read block reads input data for baseboard serial communications on the Speedgoat^® target computer.

For more information, see RS-232 Serial Communication and RS-232 Legacy Drivers.

Examples

ASCII Encoding/Decoding Loopback Test

Send ASCII data over a serial link.

• Open Script

ASCII Encoding/Decoding Resync Loopback Test

Use the ability of the FIFO Read HDRS block to resynchronize after being repeatedly disabled and apply this ability to resolve errors such as when a message is only partially complete at the time the read is attempted.

• Open Script

Binary Encoding/Decoding Loopback Test

Send Binary data over a serial link.

• Open Script

Binary Encoding/Decoding Resync Loopback Test

Use the ability of the FIFO Read BINARY block to handle messages that are interrupted and only partially complete.

• Open Script

Simple ASCII Encoding/Decoding Loopback Test (with Baseboard Blocks)

Convert a single floating point number to ASCII and transmit the value over a serial link.

• Open Script

ASCII Encoding/Decoding Loopback Test (with Baseboard Blocks)

Send ASCII data over a serial link.

• Open Model

ASCII Encoding/Decoding Resync Loopback Test (with Baseboard Blocks)

Use the ability of the FIFO Read HDRS block to resynchronize after being repeatedly disabled and apply this ability to resolve errors such as when a message is only partially complete at the time the read is attempted.

• Open Script

Binary Encoding/Decoding Loopback Test (with Baseboard Blocks)

Send Binary data over a serial link.

• Open Script

Binary Encoding/Decoding Resync Loopback Test (with Baseboard Blocks)

Use the ability of the FIFO Read BINARY block to handle messages that are interrupted and only partially complete.

• Open Script

Ports

Output

Output — Data from serial port read

serial data

The Output port provides the data from the serial port read.

Parameters

Serial port — Port that is being accessed

Legacy Serial Port 1 (default) | .. | Legacy Serial Port 8 | USB Serial Port 1 | .. | USB Serial Port 8

Specify the serial port for communications.

If using USB-to-serial adapters, the target computer detects these adapters as serusb1, serusb2, and so on in the order that the adapters are connected to the serial devices.

The order of port assignment is retained through the power cycle of the target computer or serial device if there is no change in the connections to the ports.

Programmatic Use

Block Parameter: port

Max Read Count — Select maximum word read count

51 (default) | int

Use this value to select the maximum word read count.

Programmatic Use

count

Output Datatype — Select output data type

8 bit uint null terminated (default) | 8 bit int null terminated | count+16 bit uint | count+16 bit int | count+32 bit uint | count+32 bit int

Use this value to select the output data type.

Programmatic Use

dtype

SampleTime — Select sample time in seconds

.01 (default) | double

Use this value to select the sample time in seconds.

Programmatic Use

sampletime

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2020b

R2021b: USB to Serial for RS232 Blocks

The RS232 mainboard blocks support connecting USB serial adapter ports. The Serial port parameter of the Legacy Serial Read block, Legacy Serial Write block, Legacy Serial Setup block, Legacy Serial Port block, and Legacy Serial Port F block means that you can select a USB Serial Port or a Legacy Serial Port.