write

Write data to I2C bus

Description

example

write(dev,dataIn) writes data to the I2C bus.

example

write(dev,dataIn,precision) also specifies the precision.

Examples

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Create a connection to an I2C device on Arduino hardware.

a = arduino('COM9','Uno','Libraries','I2C');
Updating server code on board Uno (COM9). This may take a few minutes.

Use an address to create the I2C device connection.

dev = device(a,'I2CAddress','0x55');

Write data to the I2C device.

dataIn = [0 1 2 3 4 5];
write(dev,dataIn);

Create a connection to an I2C device on Arduino hardware.

a = arduino('COM9','Uno','Libraries','I2C');

Use an address to create the I2C device connection.

dev = device(a,'I2CAddress','0x55');

Write data to the I2C device with the precision of uint16.

dataIn = [0 500];
write(dev,dataIn,'uint16');

Input Arguments

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I2C device connection specified as a device object.

Data to write to the I2C device, specified as a scalar, vector, hexadecimal or binary. The range of the values in the array is based on the precision.

Data precision, specified as one of the following character vectors:

  • 'uint8'

  • 'int8'

  • 'uint16'

  • 'int16'

  • 'uint32'

  • 'int32'

  • 'uint64'

  • 'int64'

Data can be also be specified in the following formats:

  • hexadecimal

  • binary

  • char

  • string

Introduced in R2014b