configurePin
Add-On Required: This feature requires the MATLAB Coder Support Package for NVIDIA Jetson and NVIDIA DRIVE Platforms add-on.
Description
Examples
Configure Pin as Input and Read Its Value
Configure a GPIO
pin as digital input and read its logical value.
Create a connection from MATLAB® to the NVIDIA® Jetson board.
hwobj = jetson
hwobj = jetson with properties: DeviceAddress: 'jetson-board-name' Port: 22 BoardName: 'NVIDIA Jetson TX2' CUDAVersion: '10.0' cuDNNVersion: '7.6' TensorRTVersion: '6.0' SDLVersion: '1.2' V4L2Version: '1.14.2-1' GStreamerVersion: '1.14.5' OpenCVVersion: '4.1.1' GPUInfo: [1x1 struct] WebcamList: [] AvailableDigitalPins: [7 11 12 13 15 16 18 19 21 22 23 24 29 31 32 33 35 36 37 38 40]
The AvailableDigitalPins
property shows the list of available digital GPIO
pins.
Show the location of the GPIO
pins on your device.
showPins(hwobj)
Display the AvailableDigitalPins
.
hwobj.AvailableDigitalPins
ans = 7 11 12 13 15 16 18 19 21 22 23 24 29 31 32 33 35 36 37 38 40
Connect your digital device to the first GPIO
pin available, for example GPIO 7
.
Configure pin GPIO 7
as a digital input.
configurePin(hwobj,7,'DigitalInput')
Read the value from pin GPIO 4
.
readDigitalPin(hwobj,7)
ans = 1
The logical value of 1
indicates a positive voltage signal on the pin GPIO 7
.
Configure Pin as Output and Write Its Value
Configure a GPIO
pin as a digital output and write its logical value.
Create a connection from the MATLAB software to the NVIDIA Jetson board.
hwobj = jetson
hwobj = jetson with properties: DeviceAddress: 'jetson-board-name' Port: 22 BoardName: 'NVIDIA Jetson TX2' CUDAVersion: '10.0' cuDNNVersion: '7.6' TensorRTVersion: '6.0' SDLVersion: '1.2' V4L2Version: '1.14.2-1' GStreamerVersion: '1.14.5' OpenCVVersion: '4.1.1' GPUInfo: [1x1 struct] WebcamList: [] AvailableDigitalPins: [7 11 12 13 15 16 18 19 21 22 23 24 29 31 32 33 35 36 37 38 40]
The AvailableDigitalPins
property shows the list of available digital GPIO
pins.
Show the location of the GPIO
pins on your device.
showPins(hwobj)
Display the AvailableDigitalPins
.
hwobj.AvailableDigitalPins
ans = 7 11 12 13 15 16 18 19 21 22 23 24 29 31 32 33 35 36 37 38 40
Connect your digital device to an available GPIO
pin, for example GPIO 11
.
Configure pin GPIO 11
as a digital output.
configurePin(hwobj,11,'DigitalOutput')
Write a logical value of 1
to pin GPIO 11
.
writeDigitalPin(hwobj,11,1)
The logical value of 1
sets the signal voltage on pin GPIO 11
to high.
Input Arguments
hwobj
— Connection to a specific NVIDIA hardware board
jetson object
Connection to a specific NVIDIA hardware board, specified as a jetson
object.
pinNumber
— GPIO pin number
scalar
GPIO pin number, specified as a scalar. This argument does not accept vectors because the hardware cannot access multiple pins simultaneously.
To get a list of valid pin numbers, use the AvailableDigitalPins
property of the jetson
object. For example,
.hwobj
.AvailableDigitalPins
Example: 12
Data Types: double
mode
— Mode used to configure the pin
'DigitalInput'
| 'DigitalOutput'
| 'Unset'
Mode used to configure the pin, specified as 'DigitalInput'
,
'DigitalOutput'
, or 'Unset'
.
Data Types: char
| string
Output Arguments
pinMode
— Current configuration mode of pin
'DigitalInput'
| 'DigitalOutput'
| 'Unset'
Current configuration mode of pin, returned as 'DigitalInput'
,
'DigitalOutput'
, or 'Unset'
.
Version History
Introduced in R2021b
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