current_hw_target - 2020.2 English

Get or set the current hardware target

Syntax

current_hw_target [‑quiet] [‑verbose] [<hw_target>]

Returns

hardware target

Usage

Name	Description
`[-quiet]`	Ignore command errors
`[-verbose]`	Suspend message limits during command execution
`[<hw_target>]`	hardware target

Description

After opening the Hardware Manager in the Vivado Design Suite, and connecting to the Xilinx hardware server (hw_server) using the connect_hw_server command, you will need to set the hardware target. This command sets or returns the current hardware target.

The hardware target is a system board containing a JTAG chain of one or more Xilinx devices that you can program with a bitstream file, or use to debug your design. Connections between hardware targets on the system board and the Vivado Design Suite are managed by the hw_server object. Refer to Vivado Design Suite User Guide: Programming and Debugging (UG908) for a list of supported JTAG download cables and devices.

The available hardware targets are defined when the Vivado tools Hardware Manager is connected to a hw_server. You can return a list of the available hardware targets using the get_hw_targets command, and define the current hardware target using the current_hw_target command.

If the <hw_target> is specified as part of the current_hw_target command, the specified target is defined as the current hardware target and that object is returned. If no hardware target is specified, the current_hw_target command returns the current hardware target object.

Each hardware target can have one or more Xilinx devices to program, or to use for debugging purposes. The current device is specified or returned by the current_hw_device command. After specifying the current hardware target, you can open the connection through the hardware target, to the Xilinx device using the open _hw_target command.

Important: You can use the current_hw_server, current_hw_target, and current_hw_device commands to set the hardware for programming and debugging the design. You should exercise care when using these commands to insure that the current server, target, and device are in sync. The current device should be found on the current target, which should be found on the current server.

This command returns the current hardware target as an object, or returns an error if it fails.

Arguments

-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.

Note: Any errors encountered on the command-line, while launching the command, will be returned. Only errors occurring inside the command will be trapped.

-verbose - (Optional) Temporarily override any message limits and return all messages from this command.

Note: Message limits can be defined with the set_msg_config command.

<hw_target> - (Optional) Specify the hw_target object to set as the current_hw_target for programming and debug. The hw_target must be specified as an object as returned by the get_hw_targets command. If the hardware target is not specified, the current_hw_target will be returned.

Example

The following example returns the available hardware targets on the connected hardware servers, and sets the current hw_target to the specified target:

get_hw_targets  
   trumpet/xilinx_tcf/Digilent/210203327985A      
   picasso/xilinx_tcf/Digilent/210203368518A  
current_hw_target [lindex [get_hw_targets] 1]