configureTerminator
Syntax
Description
configureTerminator(
defines the terminator for both read and write communications with the specified Bluetooth® device. Allowed terminator values are device
,terminator
)"LF"
(default),
"CR"
, "CR/LF"
, and integer values from
0
to 255
. The syntax sets the
Terminator
property of device
.
After you set the terminator, use writeline
and
readline
to write and read ASCII terminated string data.
configureTerminator(
defines separate terminators for read and write communications.device
,readterminator,writeterminator
)
Examples
Set Same Terminator for Read and Write Communication
Create a connection to a nearby Bluetooth device.
device = bluetooth("TestDevice")
device = bluetooth with properties: Name: "TestDevice" Address: "BC275C50533C" Channel: 1 NumBytesAvailable: 0 NumBytesWritten: 0 Show all properties
Set both the read and write terminators to "CR/LF"
.
configureTerminator(device,"CR/LF")
Confirm the change.
device.Terminator
ans = "CR/LF"
Set Different Terminators for Read and Write Communication
Create a connection to a nearby Bluetooth device.
device = bluetooth("TestDevice")
device = bluetooth with properties: Name: "TestDevice" Address: "BC275C50533C" Channel: 1 NumBytesAvailable: 0 NumBytesWritten: 0 Show all properties
Set the read terminator to "CR"
and the write terminator to
10
.
configureTerminator(device,"CR",10)
Confirm the change.
device.Terminator
ans=1×2 cell array
{["CR"]} {[10]}
The first element in the array is the read terminator and the second is the write terminator.
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: configureTerminator(device,"CR")
sets the terminator
value for the Bluetooth connection device
.
terminator
— ASCII terminator
"LF"
(default) | "CR"
| "CR/LF"
| 0 to 255
ASCII terminator for read and write communication, specified as
"LF"
, "CR"
, "CR/LF"
, or a
numeric integer value from 0 to 255. Use this form when setting the same terminator for
both read and write. When reading from the device with a terminator value of
"CR/LF"
, the read terminates on the occurrence of
CR
and LF
together. When writing to the device
with a terminator value of "CR/LF"
, the write terminates by adding
both CR
and LF
. This input argument sets the
Terminator
property.
Example: configureTerminator(device,"CR/LF")
sets both the read
and write terminators to "CR/LF"
.
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
| char
| string
readterminator,writeterminator
— ASCII terminators for read and write
"LF"
(default) | "CR"
| "CR/LF"
| 0 to 255
ASCII terminators for read or write communication, specified as
"LF"
, "CR"
, "CR/LF"
, or a
numeric integer value from 0 to 255. Use this form when setting different terminators
for read and write. When reading from the device with a terminator value of
"CR/LF"
, the read terminates on the occurrence of
CR
and LF
together. When writing to the device
with a terminator value of "CR/LF"
, the write terminates by adding
both CR
and LF
. This input argument sets the
Terminator
property.
Example: configureTerminator(device,"CR",10)
sets the read
terminator to "CR"
and write terminator to
10
.
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
| char
| string
Version History
Introduced in R2020b
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