MyPort.read()
Description
Reads values from Arduino using an ArCOM serial port object
Reads scalar values or arrays
Reads signed and unsigned integers of 8, 16 or 32 bits.
Syntax
Data = MyPort.read(nValues, Datatype, nValues2, Datatype2...)
Parameters
nValues: The number of values to read
Datatype: A string specifying the data type to read:
'uint8'
'uint16'
'uint32'
'int8'
'int16'
'int32'
nValuesN, DatatypeN: Optionally, additional scalars or arrays of data can be read, using pairs of additional data and datatype arguments.
Returns
Data: A MATLAB variable containing the data read from Arduino, of the specified data type. If multiple arrays are returned, format Data as [Data1, Data2] = MyPort.read()
Examples
These examples assume a port has been created with:
MyPort = ArCOMObject('COM3', 115200); % Use your actual port and baud rate
% 1. This reads a 32-bit unsigned integer from Arduino. Arduino is connected to an ArCOM serial port in the current workspace, named MyPort.
MyInteger = MyPort.read(1, 'uint32');
% 2. This reads a 100-sample waveform from Arduino as signed 16-bit integers.
MyWaveform = MyPort.read(100, 'int16');
% 3. This reads an 8-bit code, 10 16-bit samples and 50 32-bit timestamps.
[opCode, samples, timestamps] = MyPort.read(1, 'uint8', 10, 'int16', 50, 'uint32');