CAN Database Parser Read
CAN Database Parser Read — Reads CAN (HS) and CAN FD
messages from one channel
Library
Simulink Real-Time - Speedgoat
Description
The CAN DB Parser Read block consists of a masked subsystem, which adds an
additional functionality layer to the existing CAN Read block. The subsystem is
dynamically populated with a set of preconfigured CAN Unpack or CAN FD Unpack
blocks, the corresponding CAN Read blocks, preconfigured output ports, and the
interconnecting lines. The CAN DB Parser Read block mask allows users to select
which messages of a *.dbc file should be received.
As an alternative to configuring the CAN DB Parser Read block using the application,
the DB Parser Block Config class can be
used to perform the process programmatically.
The CAN DB Parser Read block executes according to the settings in the
corresponding CAN Setup block. The execution primarily depends on whether the
operation mode is set to CAN (HS) or CAN FD. It is the user's responsibility to
ensure that the operation mode selected in the CAN Setup block matches the operation
mode defined in the *.dbc file in use.
The CAN DB Parser Read block cannot be edited when linked to a custom library, as
it contains instance-specific data that cannot be shared across links. The block
remains editable within the library itself: changes made there will be reflected in
all linked instances. Additionally, the block cannot be used within subsystem
models, as these are not supported.
Ports
The number and type of input ports depends on the setting of the Input Type parameter.
Parameters
Configure CAN I/O Module
-
CAN I/O Module
Selects the CAN I/O module with which this driver block communicates.
The list is populated according to the CAN Setup blocks in the model.
-
Channel Number
Selects the CAN channel with which this driver block communicates.
Configure CAN Bus
-
Bus Type
Shows whether the operation mode used for this block is set to CAN
(HS) or CAN FD. This parameter is configured automatically according to
the corresponding setting in the Setup block and cannot be changed by
the user.
-
Output Type
Configure the output type of the block; two options are
available:
Signals
An output port is created for each signal to
transmit.
Single Bus
When selecting this option, the output port is a single
bus, containing a set of message buses with the same
structure as described for the Bus per
Messages setting.
Configure Sample Time
-
Sample Time
Defines the base sample time at which this driver block gets its sample hit. This
parameter can also be set to -1 for inherited
sample time. The units are in seconds.
Configure CAN Parsing
Database
-
CANdb file
Select the database file from which to choose the desired signals to
receive. The Messages table is
dynamically populated based on the selected entry of this list. This
list is populated through the CAN Database
Manager. For further information about the CAN Database Manager, please refer to the
usage
notes
Messages
-
Enable all
Allows users to enable or disable all available messages in one
click.
-
Add/Remove Selected
After selecting multiple messages in the table (Ctrl
+ left-click), all these messages can be simultaneously enabled or
disabled.
-
IDs in hex
In the Messages
table, IDs are displayed in decimal form by default. By enabling this
command, the IDs can be displayed in hexadecimal format.
Signals
The Signals table shows the signals
related to the last enabled/disabled message. No actions are available
for this table.