PWM

R2026b

Pulse width modulation of digital output pin

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PWM 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 Coder Support Package for BeagleBone Blue Hardware / Basic

Description

Add-On Required: This feature requires the Simulink Coder Support Package for BeagleBone Blue Hardware add-on.

The PWM block varies the power output of a digital output pin. The input value sets the percentage of time that the digital square-wave is on within a specific period. This time percentage is called duty cycle.

Ports

Input

Port_1 — Duty cycle value

scalar

The range of valid input is 0 - 100. The input controls the duty cycle of the square waveform. An input value of 0 sets the duty cycle to 0% or no power, while an input value of 100 sets the duty cycle to 100% or full power. An intermediate input value, such as 0.333, sets the duty cycle to 33.3%, or 1/3 power. An out-of-range input value, such as -0.2 or 1.2, outputs minimum or maximum power.

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

Parameters

Pin — Select the digital output pin

GPS_HEADER_PIN_3 (default) | GPS_HEADER_PIN_4

Specify the digital output at which the block generates the PWM signal.

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

Each block must have a unique pin number within a model.

Frequency — Frequency of the PWM signal

2000 (default)

Set the frequency of the PWM signal. If there are two PWM blocks, set both the blocks to the same frequency.

Programmatic Use: Add Block

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

"bbblueBasicLib/PWM"

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

Version History

Introduced in R2018b