JlinkStream

class JlinkStream

This allows for transferring binary data between a Python script and a JLink-enabled embedded device via the debug interface

See the source code on Github: yzlite/utils/jlink_stream

Properties

default_options	Default configuration options
is_connected	Return if the device is connected

Methods

__init__
close	Close a device data stream
connect	Open a connection to an embedded device via J-Link
disconnect	Close the connection to the embedded device
open	Open a data stream to the embedded device
process	Process the device data streams
read	Read data from a data stream opened for reading
write	Write data to a data stream opened from writing

__init__(options=None)

Parameters:

options (Optional[JlinkStreamOptions]) –

property default_options: JlinkStreamOptions

Default configuration options

Return type:

JlinkStreamOptions

property is_connected: bool

Return if the device is connected

Return type:

bool

connect(threaded=True, reset_device=False)

Open a connection to an embedded device via J-Link

NOTE: The embedded device must be actively running the JLink library

disconnect()

Close the connection to the embedded device

open(name, mode='r')

Open a data stream to the embedded device

Return type:

JLinkDataStream

Parameters:

name (str) –

close(name)

Close a device data stream

Parameters:

name (str) –

read(name, max_size=None, timeout=None)

Read data from a data stream opened for reading

Return type:

bytes

Parameters:

• name (str) –

• max_size (Optional[int]) –

• timeout (Optional[float]) –

write(name, data, timeout=None)

Write data to a data stream opened from writing

Return type:

int

Parameters:

• name (str) –

• data (bytes) –

• timeout (Optional[float]) –

process()

Process the device data streams

This is periodically called in a separated thread if ‘threaded=True’ in the connect() API. Otherwise, this should be periodically called.