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writeRegister

Write data to I2C device register

Syntax

writeRegister(dev,register,dataIn)
writeRegister(dev,register,dataIn,precision)

Description

example

writeRegister(dev,register,dataIn) writes data to the I2C device register.

example

writeRegister(dev,register,dataIn,precision) also specifies the data precision.

Examples

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Create an Arduino object and attach an I2C device object to it.

a = arduino();

Use an address to create the I2C device connection.

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

Write value 10 to the I2C device register at address 20.

writeRegister(dev,20,10);

Copyright 2014 The MathWorks, Inc.,

Create an Arduino object and attach an I2C device object to it.

a = arduino();

Use an address to create the I2C device connection.

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

Write value 10 to the I2C device register at address 20 with the precision of uint16.

writeRegister(dev,20,10,'uint16');

Copyright 2014 The MathWorks, Inc.,

Input Arguments

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I2C device connection, specified as a device object.

Address of the I2C device register, specified as a scalar integer from 0 through 255.

Data to write, specified as a scalar or vector. 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'

Introduced in R2014b