writePixel

Write the specified color to an individual pixel at the specified row and column of LED Matrix

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

Syntax

writePixel(mysh,pixelLocation,pixelValue)

writePixel(mysh,pixelLocation,color)

Description

writePixel(mysh,pixelLocation,pixelValue) writes the specified pixel color value at the specified pixel location on the LED Matrix.

Specify the pixel location as 1x2 [row column] value. Specify the color as a 1x3 [R G B] value.

example

writePixel(mysh,pixelLocation,color) writes the specified color at the specified location on the LED Matrix.

Specify the pixel location as 1x2 [row column] value. Specify the color by name.

You can specify the following colors by name:

‘red’ or ‘r’
‘blue’ or ‘b’
‘green’ or ‘g’
‘cyan’ or ‘c’
‘magenta’ or ‘m’
‘yellow’ or ‘y’
‘white’ or ‘w’
‘black’ or ‘k’

example

Examples

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Write Pixel Value at the Pixel Location on LED Matrix

To write to an individual LED Matrix pixel at the specified row and column position with the specified color.

writePixel(mysh,[1 1],[255 0 0])

Write the pixel color specified by the value [255, 0, 0] (red) to the pixel at location, [1,1].

Write Specified Color at a Pixel Location on LED Matrix

Writes the specified color at the specified location on the LED Matrix.

writePixel(mysh,[1 1],'r')

Write the pixel color specified by the name ‘r’ (red) to the pixel at location, [1,1].

Input Arguments

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`mysh` — Connection to SenseHAT
Sense HAT object

Connection to a SenseHAT board, specified as a sensehat object.

Example: mysensehat

`pixelLocation` — LED Matrix location at which the specified color should be written
[row column]

The row-column value at which the specified color should be written. Pixel location specified as [1 2] refers to the pixel in the first row and the second column. The row and column values can range from 1 to 8.

The following image shows the pixel locations:

Example: [1 2]

`pixelValue` — The pixel value that should be written at the specified location
[R G B] in the range 0–255.

Pixel value that should written at the specified location.

Example: [255, 0, 255]

`color` — The color that should be written at the specified location
`'r' or 'red'` | `'g' or 'green'` | `'b' or 'blue'` | `'y' or 'yellow'` | `'c' or 'cyan'` | `'m' or 'magenta'` | `'w' or 'white'` | `'k' or 'black'`

The color that should written at the specified location.

Example: ‘m’

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

You can also deploy writePixel on the Raspberry Pi^® hardware in MATLAB^® Online™.

Version History

Introduced in R2016b