Get a list of hardware AXI transactions.
Syntax
get_hw_axi_txns [‑of_objects <args>] [‑regexp] [‑nocase] [‑filter <arg>]
[‑quiet] [‑verbose] [<patterns>]
Returns
Hw_axi_txns
Usage
Name | Description |
---|---|
[-of_objects]
|
Get 'hw_axi_txn' objects of these types: 'hw_axi'. |
[-regexp]
|
Patterns are full regular expressions |
[-nocase]
|
Perform case-insensitive matching. (valid only when -regexp specified) |
[-filter]
|
Filter list with expression |
[-quiet]
|
Ignore command errors |
[-verbose]
|
Suspend message limits during command execution |
[<patterns>]
|
Match the 'hw_axi_txn' objects against patterns. Default: * |
Description
Returns the read or write transactions for the specified JTAG to AXI Master core, hw_axi object.
The JTAG to AXI Master is a customizable IP core that works as an AXI Master to drive AXI transactions and drive AXI signals that are internal to the hardware device. This IP can be used in Vivado™ IP integrator or can be instantiated in HDL in a Vivado project.
The JTAG-AXI core supports all memory-mapped AXI interfaces, except AXI4-Stream, and supports the AXI-Lite protocol. The AXI interface can be selected as a property of the core. The width of AXI data bus is customizable. This IP can drive any AXI4-Lite or Memory Mapped Slave directly, and can also be connected as the AXI Master to the interconnect. Run-time interaction with this core requires the use of the Vivado logic analyzer feature. Detailed documentation on the IP core can be found in the LogiCORE IP JTAG to AXI Master Product Guide (PG174). A tutorial showing its use can be found in the Vivado Design Suite Tutorial: Programming and Debugging (UG936).
The JTAG to AXI Master core must be instantiated in the RTL code, from the Xilinx™ IP catalog. AXI transactions are defined as complete READ or WRITE transactions between the AXI master and various slaves.
This command returns a list of hw_axi_txn objects on the hw_device, or returns an error if it fails.
Arguments
-of_objects <arg>
- (Optional) Return the AXI Master cores of the specified hardware devices. The devices must be specified as objects using the get_hw_devices
or the current_hw_device
commands.
-of_objects
option requires objects to be specified using the get_*
commands, such as get_cells
or get_pins
, rather than specifying objects by name. In addition, -of_objects
cannot be used with a search <pattern>
.
-regexp
- (Optional) Specifies that the search <patterns> are written as regular expressions. Both search <patterns> and -filter
expressions must be written as regular expressions when this argument is used. Xilinx® regular expression Tcl commands are always anchored to the start of the search string. You can add ".*" to the beginning or end of a search string to widen the search to include a substring. See http://perldoc.perl.org/perlre.html for help with regular expression syntax.
regexp
is not anchored, and works as a standard Tcl command. For more information refer to http://www.tcl.tk/man/tcl8.5/TclCmd/regexp.htm.
-nocase
- (Optional) Perform case-insensitive matching when a pattern has been specified. This argument applies to the use of -regexp
only.
-filter
<args> - (Optional) Filter the results list with the specified expression. The -filter
argument filters the list of objects returned by get_hw_axi_txns
based on property values on the AXI transactions. You can find the properties on an object with the report_property
or list_property
commands. In the case of the "hw_axi_txn" object, "NAME" and "TYPE" are two of the properties that can be used to filter results.
get_pins * -filter {DIRECTION == IN && NAME !~ "*RESET*"}
bool
) type properties can be directly evaluated in filter expressions as true or not true: -filter {IS_PRIMITIVE && !IS_LOC_FIXED}
-quiet
- (Optional) Execute the command quietly, returning no messages from the command. The command also returns TCL_OK regardless of any errors encountered during execution.
-verbose
- (Optional) Temporarily override any message limits and return all messages from this command.
set_msg_config
command.<patterns> - (Optional) Match hw_axi objects against the specified patterns. The default pattern is the wildcard '*' which gets a list of all hw_axis available on the current hardware device.
Example
The following example gets the ILA debug cores defined on the current hardware device:
get_hw_axi_txn -filter {TYPE==WRITE} [get_hw_axis]