Node Module Implementation

The WARPLab Reference Design implements a Node module for brokering commands and responses to other modules in a WARP node.

Related Components:

• MATLAB:
  • wl_node​ class
• WARP Hardware:
  • wl_node​ C software

Command List

Node commands are selected as string inputs to the wl_nodeCmd method in wl_node.m​. These strings are each individual cases of the switch statement in procCmd method of wl_node.m​.

Syntax

MATLAB allows two valid forms of syntax for calling methods

• Let N be a scalar or vector of wl_node objects
• Let command_string be a string containing a particular command
• Let arg be an argument for that command (optional)

Syntax 1: wl_nodeCmd(N, command_string, arg1, arg2, ..., argN)

Syntax 2: N.wl_nodeCmd(command_string, arg1, arg2, ..., argN)

These two different forms of syntax are identical and either may be used for issuing commands to WARP nodes.

Command List and Documentation

get_hardware_info

Reads details from the WARP hardware and updates node object parameters

Arguments: none

Returns: none (access updated node parameters if needed)

Hardware support:
All:

• WARPLab design version
  
• Hardware version
  
• Ethernet MAC Address
  
• Number of Interface Groups
  
• Number of Interfaces
  

WARP v3:

• Serial number
  
• Virtex-6 FPGA DNA
  

get_fpga_temperature

Reads the temperature (in Celsius) from the FPGA

Arguments: none

Returns: (double currTemp), (double minTemp), (double maxTemp) currTemp - current temperature of FPGA in degrees Celsius
minTemp - minimum recorded temperature of FPGA in degrees Celsius
maxTemp - maximum recorded temperature temperature of FPGA in degrees Celsius

initialize

Initializes the node; this must be called at least once per power cycle of the node

Arguments: none

Returns: none

identify

Blinks the user LEDs on the WARP node, to help identify MATLAB node-to-hardware node mapping

Arguments: none

Returns: none

node_config_reset

Resets the HW state of the node to accept a new node configuration

Arguments: none

Returns: none