PWM Output

R2026b

Generate square wave on the specified output pin

• 

PWM Output 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 / STM32F1xx Based Boards
STM32 Microcontroller Blockset / STM32F2xx Based Boards
STM32 Microcontroller Blockset / STM32F3xx Based Boards
STM32 Microcontroller Blockset / STM32F4xx Based Boards
STM32 Microcontroller Blockset / STM32F7xx Based Boards
STM32 Microcontroller Blockset / STM32G0xx Based Boards
STM32 Microcontroller Blockset / STM32G4xx Based Boards
STM32 Microcontroller Blockset / STM32H5xx Based Boards
STM32 Microcontroller Blockset / STM32H7xx Based Boards
STM32 Microcontroller Blockset / STM32H7RSxx Based Boards
STM32 Microcontroller Blockset / STM32L4xx Based Boards
STM32 Microcontroller Blockset / STM32L5xx Based Boards
STM32 Microcontroller Blockset / STM32U5xx Based Boards
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / STM32F746G-Discovery
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / STM32L475VG-Discovery (B-L475E-IOT01A)
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / STM32F769I-Discovery
STM32 Microcontroller Blockset / (Legacy) STM32 MBED Based Boards / Common
STM32 Microcontroller Blockset / STM32WBxx Based Boards

Description

The PWM Output block generates square waveform on the specified output pin. The block input controls the duty cycle of the square waveform. You can provide a value between 0–100 as the block input. An input value of 0 produces a 0 percent duty cycle and an input value of 100 produces a 100 percent duty cycle

Ports

Input

Port_1 — Duty cycle value

scalar

The range of valid input values is 0–100. The input controls the duty cycle (width of the square wave) of the square waveform.

An input value of 0 produces a 0% duty cycle and an input value of 100 produces a 100% duty cycle. Any out-of-range values, such as 500 or -500, at the block input port has the same effect as the maximum or minimum input values.

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

Parameters

Pin — Pin at which the block generates the PWM signal

To view the pin mapping on the board, click View pin map.

Make sure to assign different pin name to the different blocks of your model.

Apart from the pins names mentioned in the pin mapping table, there are other alternate pin names (Px_y_ALTz) that can be used to access other hardware peripheral devices connected to the same pin. To know more, refer to Usage of Alternate Pin Names.

The alternate pin names are only applicable for Nucleo and Discovery boards.

Initial frequency (Hz) — Initial frequency of the PWM waveform

2000 (default)

Specify the initial frequency of the PWM waveform.

Initial duty cycle (0 - 100) — Initial width of the square wave on PWM pin

50 (default) | integer between 0 and 100

Specify the initial duty cycle between 0–100.

Programmatic Use: Add Block

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

"stm32f1xxblockslib/PWM Output"

"stm32f2xxblockslib/PWM Output"

"stm32f3xxblockslib/PWM Output"

"stm32f4xxblockslib/PWM Output"

"stm32f7xxblockslib/PWM Output"

"stm32g0xxblockslib/PWM Output"

"stm32g4xxblockslib/PWM Output"

"stm32h5xxblockslib/PWM Output"

"stm32h7xxblockslib/PWM Output"

"stm32h7rsxxblockslib/PWM Output"

"stm32l4xxblockslib/PWM Output"

"stm32l5xxblockslib/PWM Output"

"stm32u5xxblockslib/PWM Output"

"stm32f7lib/PWM Output"

"stm32l475vglib/PWM Output"

"stm32f769ilib/PWM Output"

"stm32nucleodiscoboardslib/Common/PWM Output"

"stm32wbxxblockslib/PWM Output"

Example: add_block("stm32f1xxblockslib/PWM Output","myModel/myBlock",MakeNameUnique="on")

Version History

Introduced in R2018a