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write

Write data to serial device

Description

example

write(serialdevObj,dataIn) writes data to the serial device.

example

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

Examples

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Create an arduino connection.

arduinoObj = arduino("COM16","Leonardo","Libraries",{'SPI','Serial','I2C'});

Create a connection to the serial device on the Arduino hardware.

serialdevObj = device(arduinoObj,'SerialPort',1)
serialdevObj = 
  device with properties:

             Interface: 'Serial'
            SerialPort: 1
                 TxPin: 'D1'
                 RxPin: 'D0'
              BaudRate: 9600 (bits/s) 
     NumBytesAvailable: 0 

Show all properties, functions

Write 3 bytes of data to the serial device.

write(serialdevObj,[88 99 65]);

Create an arduino connection.

arduinoObj = arduino("COM16","Leonardo","Libraries",{'SPI','Serial','I2C'});

Create a connection to the serial device on the Arduino hardware.

serialdevObj = device(arduinoObj,'SerialPort',1)
serialdevObj = 
  device with properties:

             Interface: 'Serial'
            SerialPort: 1
                 TxPin: 'D1'
                 RxPin: 'D0'
              BaudRate: 9600 (bits/s) 
     NumBytesAvailable: 0 

Show all properties, functions

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

write(serialdevObj,256,'uint16');

Input Arguments

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Serial device connection specified as a device object.

Data to write to the serial device, 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'

Data can be also be specified in the following formats:

  • hexadecimal

  • binary

  • char

  • string

For example, write(serialdevObj,0x28) writes data in hexadecimal and write(serialdevObj,0b0010) writes data in binary.

More About

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Code Generation Using MATLAB Function Block

  • Use write in a MATLAB® Function block with the Simulink® Support Package for Arduino® Hardware to generate code that can be deployed on Arduino Hardware.

  • Values of dataIn is not validated against the precision. The dataIn values will be saturated when it goes beyond the range of the specified precision.

See Also

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Introduced in R2019b