Fread matlab serial

Support Answers MathWorks. Search MathWorks. MathWorks Answers Support. Close Mobile Search. Trial software. You are now following this question You will see updates in your followed content feed. You may receive emails, depending on your communication preferences. Show older comments. MathWorks Support Team on 27 Jun Vote 1. Commented: Cristian Berceanu on 3 Oct I am reading numeric data from the serial port and specify the precision of the data as data type uint8. However the output data is always of data type double.

The input buffer is filled unless size is specified. Use of this function with a serial object will be removed. To access a serial port device, use a serialport object with its functions and properties instead.

See Transition Your Code to serialport Interface for more information about using the recommended functionality. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance.

Other MathWorks country sites are not optimized for visits from your location. Toggle Main Navigation. Search MathWorks. Toggle Main Navigation. Open Mobile Search. Off-Canvas Navigation Menu Toggle. Main Content. Valid options for size are: n Read at most n values into a column vector.

Tips Before you can read data from the device, it must be connected to obj with the fopen function. Note The Terminator property is not used for binary read operations.

Supported Precisions The supported values for precision are listed below. Data Type Precision Interpretation Character uchar 8-bit unsigned character schar 8-bit signed character char 8-bit signed or unsigned character Integer int8 8-bit integer int16 bit integer int32 bit integer uint8 8-bit unsigned integer uint16 bit unsigned integer uint32 bit unsigned integer short bit integer int bit integer long or bit integer ushort bit unsigned integer uint bit unsigned integer ulong or bit unsigned integer Floating-point single bit floating point float32 bit floating point float bit floating point double bit floating point float64 bit floating point.

Compatibility Considerations expand all serial object interface will be removed Not recommended starting in Rb Use of this function with a serial object will be removed. The following formats map to an input stream of bits rather than bytes.

By default, numeric values are returned in class double arrays. See class for details. If the source and destination formats are the same, the following shorthand notation can be used.

This table shows some example precision format strings. Each 4-bit integer becomes an 8-bit integer. If precision specifies a bit format, like 'bitN' or 'ubitN' , the skip argument is interpreted as the number of bits to skip. When skip is specified, fread reads in, at most, a repetition factor number of values default is 1 , skips the amount of input specified by the skip argument, reads in another block of values, again skips input, and so on, until size number of values have been read.