configurePin

Set Arduino pin mode

Syntax

pinMode = configurePin(a,pin)

configurePin(a,pin,mode)

pinMode = configurePin(a,pin) displays the mode the specified pin on the Arduino^® hardware in connection a .

configurePin(a,pin,mode) sets the specified pin on the Arduino hardware in connection a to the specified mode.

a = arduino('COM4','Uno');
configurePin(a,'A2')

ans = 
'Unset'

a = arduino('COM4','Uno');
configurePin(a,'A4','I2C');

Display current pin mode.

pinMode = configurePin(a,'A4')

pinMode = 
'I2C'

a = arduino('COM4','Uno');
configurePin(a,'D3','pullup');

Display current pin mode.

pinmode = configurePin(a,'D3')

pinmode = 
'Pullup'

Display current pin mode and reset it to 'Unset'.

a = arduino('COM4','Uno');
configurePin(a,'D3','pullup');
pinMode = configurePin(a,'D3')

pinMode = 
'Pullup'

Change mode to 'Unset' and display the current mode.

configurePin(a,'D3','Unset');
pinMode = configurePin(a,'D3')

pinMode = 
'Unset'

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

Example: a = arduino;

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

Example: D3 or A1.

Pin mode specified as a character vector. Valid pin modes are:

AnalogInput: acquire analog signals from pin
DigitalInput: acquire digital signals from pin
DigitalOutput: generate digital signals from pin
I2C: specify a pin to use with I2C protocol
Interrupt: specify pin in interrupt mode to be used in rotaryEncoder
Pullup: specify pin to use a pullup switch
PWM: specify pin to use a pulse width modulator
CAN: specify pin to use a Controller Area Network bus
Servo: specify pin to use a servo
SPI: specify a pin to use with SPI protocol
Tone: specify pin to use for playTone
Ultrasonic: specify pin to use with ultrasonic sensor
CAN: specify pin to use with CAN shield
Unset: clears pin designation. The pin is no longer reserved and can be automatically set at the next operation.

Pins are configured on first usage. You can reset the pin mode to change the mode. If you want to use a pullup, you must set the mode to 'pullup'.

Current mode of pin, returned as a character vector.

Use configurePin 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 using configurePin before using it in the MATLAB Function block.
The function does not return any output during code generation.
The following modes are currently supported for code generation : AnalogInput, DigitalInput, DigitalOutput, Pullup, PWM, and Unset.