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readSpeed

Read current rotational speed of motor from rotary encoder

Since R2020a

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Add-On Required: This feature requires the MATLAB Support Package for Arduino Hardware add-on.

Syntax

[speed] = readSpeed(encoder)
[speed,timestamp] = readSpeed(encoder)

Description

[speed] = readSpeed(encoder) returns the current rotational speed measured by the rotary encoder in revolutions per minute (RPM).

example

[speed,timestamp] = readSpeed(encoder) returns the current rotational speed measured by the rotary encoder in revolutions per minute (RPM) and timestamp in datetime format.

example

Examples

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This example uses:

Open Live Script

Create a connection to the Nano Motor Carrier.

arduinoObj = arduino('/dev/ttyACM0','Nano33IoT','Libraries','MotorCarrier');
mcObj = motorCarrier(arduinoObj);

Create a connection to the rotary encoder.

encoder = rotaryEncoder(mcObj,1);

Read the current rotational speed.

speed = readSpeed(encoder);

This example uses:

Open Live Script

Create a connection to the Nano Motor Carrier.

arduinoObj = arduino('/dev/ttyACM0','Nano33IoT','Libraries','MotorCarrier');
mcObj = motorCarrier(arduinoObj);

Create a connection to the rotary encoder.

encoder = rotaryEncoder(mcObj,1);

Read the current rotational speed.

[speed,timestamp] = readSpeed(encoder);

Input Arguments

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Connection to the rotary encoder on MKR Motor Carrier or Nano Motor Carrier, specified as an object.

Output Arguments

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Current rotational speed as measured by the rotary encoder in revolutions per minute (RPM).

Data Types: double

Time at which MATLAB® reads the speed data from the board.

Data Types: datetime

Version History

Introduced in R2020a

See Also

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