Create a connection to the Raspberry Pi hardware usingraspi. TheAvailableDigitalPinsproperty shows the list of digital pins that are available.

mypi = raspi

mypi = raspi with properties: DeviceAddress: 'raspberrypi-computername' Port: 18725 BoardName: 'Raspberry Pi Model B Rev 2' AvailableLEDs: {'led0'} AvailableDigitalPins: [4 7 8 9 10 11 14 15 17 18 22 23 24 25 27 30 31] AvailableSPIChannels: {} AvailableI2CBuses: {'i2c-0' 'i2c-1'} I2CBusSpeed: 100000 Supported peripherals

The Raspberry Pi hardware shares some digital pins with the SPI and I2C interfaces. Enabling or disabling those interfaces changes the number of available pins.

To review the list of digital pins are available, use theAvailableDigitalPinsproperty.

mypi.AvailableDigitalPins

ans = Columns 1 through 13 4 7 8 9 10 11 14 15 17 18 22 23 24 Columns 14 through 17 25 27 30 31

To show a pin diagram for the specific model of the Raspberry Pi hardware that you are using, useshowPins.

showPins(mypi)

To configure a pin as a digital input, pass anDigitalInputvalue toconfigurePin.

configurePin(mypi,4,'DigitalInput')

This example configures pin 4 as an input.

To read the value of a digital pin, usereadDigitalPin.

readDigitalPin(mypi,4)

ans = 1

This example shows that a wire connected to pin 4 has an elevated voltage, which produces a logical value of1(true). If the wire has no voltage, the logical value of pin 4 is0(false).

To configure a pin as a digital output, pass an outputvaluetoconfigurePin.

configurePin(mypi,7,'DigitalOutput')

To write a logical value to a digital pin, usewriteDigitalPin.

writeDigitalPin(mypi,7,1)

This example writes a logical value of1销7。