writeline
Syntax
Description
Examples
Write and Read Line of ASCII Data from Bluetooth Device
Create a connection to a nearby Bluetooth device. In this example, the HC-06 Bluetooth module is configured as a loopback device.
device = bluetooth("HC-06")
device = bluetooth with properties: Name: "HC-06" Address: "98D331FB3B77" Channel: 1 NumBytesAvailable: 0 NumBytesWritten: 0 Show all properties
Check the default ASCII terminator.
device.Terminator
ans = "LF"
Set the terminator to "CR"
and write a string of ASCII data. The
writeline
function automatically appends the terminator to the
data.
configureTerminator(device,"CR") writeline(device,"hello")
Write another string of ASCII data with the terminator automatically appended.
writeline(device,"world")
Since the device is configured as a loopback device, the data you write to the
device is returned to MATLAB. Read a string of ASCII data. The readline
function
returns data until it reaches a terminator.
readline(device)
ans = "hello"
Read a string of ASCII data again to return the second string that you wrote.
readline(device)
ans = "world"
Clear the Bluetooth connection.
clear device
Input Arguments
device
— Bluetooth device connection
bluetooth
object
Bluetooth device connection, specified as a bluetooth
object.
Example: data = writeline(device,data)
writes ASCII data to the
Bluetooth connection device
.
data
— ASCII data
character vector | string scalar
ASCII data to write, specified as a character vector or string scalar of text.
Example: writeline(device,"helloworld")
writes the ASCII data
"helloworld"
.
Data Types: string
Version History
Introduced in R2020b
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