Standard Servo Write

R2026b

Set shaft position of standard servo motor to angle specified in degrees

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Standard Servo Write 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:
Raspberry Pi Blockset / Basic

Description

Use the Standard Servo Write block to control the shaft angle of a servo motor attached to a pulse width modulation (PWM) output pin on the Raspberry Pi^® hardware board.

During simulations without the hardware, this block does nothing. See Block Produces Zeros or Does Nothing in Simulation (Simulink).

Note

To generate C/C++ code for this block, you must have an Embedded Coder^® license.

Ports

Input

Data — Input value that determines speed and direction of standard rotation servo motor

positive integer in the range [0, 255]

The value sent to the block at the input port determines the speed and direction of rotation of the standard rotation servo motor interfaced with the Raspberry Pi hardware board. For example:

• An input value of 0 positions the shaft at 0 degrees.

• An input value of 180 positions the shaft at 180 degrees.

• Any input value between the [0, 180] range, for example 50, positions the shaft at 50 degrees.

• Any input value out of the [0, 180] range, for example -2 or 188, positions the shaft at 0 and 180, respectively.

Data Types: double

Parameters

Board — Raspberry Pi hardware board

Pi 4 Model B (default) | Model B Rev1 | Model B Rev2 | Model B+ | Pi 2 Model B | Pi 3 Model B | Pi 3 Model B+ | Pi Zero W | Compute Module 4 | Pi Zero 2 W

Select your Raspberry Pi hardware board. You can find this information on the target hardware, product packaging, or product documentation.

Pin — Standard servo write pin number

18 (default) | 4 | 17 | 27 | 22 | 10 | 9 | 11 | 14 | 15 | 21 | 23 | 24 | 25 | 8 | 7 | 5 | 6 | 12 | 13 | 19 | 16 | 26 | 20 | 21

Select the Raspberry Pi hardware board pin number to which the standard rotation servo write motor input signal is connected. To open the pin map of the Raspberry Pi board, click View pin map.

Note

Do not assign the same pin number to multiple blocks within a model.

Minimum pulse duration — Minimum pulse duration of servo signal

1000e-6 (default) | positive scalar

Set the minimum pulse duration of the servo signal in seconds.

Maximum pulse duration — Maximum pulse duration of servo signal

2000e-6 (default) | positive scalar

Set the maximum pulse duration of the servo signal in seconds.

Programmatic Use: Add Block

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

"raspberrypiBasiclib/Standard Servo Write"

Example: add_block("raspberrypiBasiclib/Standard Servo Write","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using Simulink® Coder™.

To generate C/C++ code for this block, you must have an Embedded Coder license. For more information on selecting the right product stack according to your development goals, see Product Stack for Raspberry Pi Blockset.

Version History

Introduced in R2016b