Comparator

R2026b

Compare two analog inputs on peripheral and provide results

Since R2023b

• 

Comparator 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:
STM32 Microcontroller Blockset / STM32F3xx Based Boards
STM32 Microcontroller Blockset / STM32G0xx Based Boards
STM32 Microcontroller Blockset / STM32G4xx Based Boards
STM32 Microcontroller Blockset / STM32H7xx Based Boards
STM32 Microcontroller Blockset / STM32L4xx Based Boards
STM32 Microcontroller Blockset / STM32L5xx Based Boards
STM32 Microcontroller Blockset / STM32U5xx Based Boards
STM32 Microcontroller Blockset / STM32H5xx Based Boards
STM32 Microcontroller Blockset / STM32WBxx Based Boards

Description

The Comparator block compares two analog inputs on the peripheral and provides the logical value of the result.

Examples

Get Started with STMicroelectronics STM32 Processor Based Boards

Run a Simulink model on STM32 processor.

• Open Model

Ports

Input

Enable — Enable run time

scalar

The port Enable allows user to enable the comparator module during run time.

Dependencies

To enable this port, select the Run time module enable parameter.

Data Types: uint8 | uint16

Output

result — Result of comparator

scalar

The block outputs the result of the comparator.

• 0 - +ve pin input is greater than -ve pin input

• 1 - +ve pin input is less than -ve pin input

Data Types: Boolean

Status — Status of comparator

scalar

The block outputs comparator execution status.

• 0 - Valid result

• 1 - Invalid result

Dependencies

To enable this port, select the Run time module enable and Output status parameters.

Data Types: Boolean

Parameters

Comparator module — Select comparator module

COMP1 (default) | COMP2 | COMP3 | COMP4 | COMP5 | COMP6 | COMP7

Select a comparator module for comparison of analog inputs.

Programmatic Use

Block Parameter: CompModule

Run time module enable — Select to enable comparator

off (default) | on

Select to Run time module enable to enable the comparator during run time. Selecting this parameter, configures the enable input port.

Programmatic Use

Block Parameter: CompEnable

Output status — Comparator output

off (default) | on

When you select this parameter, the block configures Status output port. The Status port outputs the status of the comparator.

Dependencies

To enable this parameter, select the Run time module enable parameter.

Programmatic Use

Block Parameter: OutputStatus

Sample time — Frequency at which block reads pin value

-1 (default) | non-negative real value

Specify how often (in seconds) the block reads the pin value. Enter a value greater than zero. When you specify this parameter as -1, Simulink determines the best sample time for the block based on the block context within the model.

Programmatic Use

Block Parameter: SampleTime

Programmatic Use: Add Block

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

"stm32f3xxblockslib/Comparator"

"stm32g0xxblockslib/Comparator"

"stm32g4xxblockslib/Comparator"

"stm32h7xxblockslib/Comparator"

"stm32l4xxblockslib/Comparator"

"stm32l5xxblockslib/Comparator"

"stm32u5xxblockslib/Comparator"

"stm32h5xxblockslib/Comparator"

"stm32wbxxblockslib/Comparator"

Example: add_block("stm32f3xxblockslib/Comparator","myModel/myBlock",MakeNameUnique="on")

Version History

Introduced in R2023b