ASCII Encode

R2026b

Convert Simulink values into uint8 character vector

• 

ASCII Encode block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simulink Real-Time / RS232

Description

The ASCII Encode block generates a uint8 output vector that contains a NULL-terminated character vector based on a printf like format string. The data comes from the input ports.

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

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 Script

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

Ports

Input

1 — Numbered ports that receive values to encode

numeric

Values that the block encodes as a null-terminated character vector.

Data Types: double | int8 | uint8 | int16 | uint16 | int32 | uint32

Output

D — Null-terminated character vector

character vector

Generated uint8 output vector that contains a NULL-terminated character vector.

Parameters

Format string — Format specifiers for converting values to ASCII

%d\r (default) | %c | %i | %o | %u | %x | %e | %f | %g

Enter a printf like format string. For each format specifier such as %d, the block replaces the format specifier by the converted value in the corresponding input variable. The format specifiers follow the normal description for printf.

Programmatic Use

Block Parameter: format

Number of variables — Number of block inputs

1 (default) | integer

The value on each port is inserted into the output character vector with the format specified in Format string.

Programmatic Use

Block Parameter: nvars

Max output string length — Maximum length of converted character vector, in bytes

128 (default) | integer

The block allocates enough memory to support this length for the output port. When specifying this length, include the NULL termination on the character vector.

If the converted character vector exceeds this length, the block returns an error and does not write that character vector to the output port.

Programmatic Use

Block Parameter: maxlength

Variable types — Simulink^® data types allowed for input ports

{'double'} (default) | {'int8'} | {'uint8'} | {'int16} | {'uint16'} | {'int32'} | {'uint32'}

A cell vector with the same number of elements as specified in Number of variables can specify a different data type for each input port. A single element is replicated. For example:

nvars=3

{ } — The three inputs are doubles.

{'uint8'} — The three inputs are uint8.

{'uint16', 'double', 'uint8'} — The first input is a uint16, the second input is a double, and the third input is a uint8.

Programmatic Use

Block Parameter: vartypes

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"slrealtimeseriallib/ASCII Encode"

Example: add_block("slrealtimeseriallib/ASCII Encode","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

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

Version History

Introduced in R2020b