readVoltage

Read voltage from analog pin on Arduino hardware

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

Syntax

voltage = readVoltage(a,pin)

Description

voltage = readVoltage(a,pin) reads the voltage on the specified analog input pins on Arduino^® hardware.

Examples

Read Voltage from Analog Pin

Create an Arduino object and read voltage from and analog input pin.

a = arduino;
readVoltage(a,'A4')

ans = 1.0606

Input Arguments

a — Arduino hardware connection

object

Arduino hardware connection created using arduino, specified as an object.

pin — Analog pin number

character vector

Analog pin number on the physical hardware, specified as a character vector.

Note

If you connect to ESP32 board, the pin number must always correspond to a digital pin. For details, see Pin-mapping for ESP32 Boards.

Output Arguments

voltage — Voltage read from analog pin

numeric

Voltage read from an analog pin on an Arduino hardware specified as a numeric double.

More About

Code Generation Using MATLAB Function Block

• Use readVoltage in a MATLAB^® Function block with the Simulink^® Support Package for Arduino Hardware to generate code that can be deployed on Arduino Hardware.

• Configure the Arduino peripherals to the appropriate mode using configurePin before using readVoltage in the MATLAB Function block.

Version History

Introduced in R2014b