JTAG (Joint Action Test Group) is a standard developed for operations such as testing connections in electronic circuits, programming onboard storage devices, or step-by-step debugging. The board includes a single JTAG interface connector. Debugging the dual-core R5 applications on the T3-GEM-O1 development board is performed using JTAG. To perform debugging, the following requirements are needed:
  • 1 x T3-GEM-O1 JTAG Cable
  • A computer with Code Composer Studio installed,
  • A JTAG debugger supported by Code Composer Studio.
In this guide, the Texas Instruments XDS200 USB Debug Probe was used.

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JTAG Configuration and Connecting to the SOC

  • Set the development board to Dev Bootmode as shown here, then power it on. Next, connect the T3-GEM-O1 JTAG Cable to the board as shown in the image.

Todo: Connecting the JTAG cable to the board

  • Launch the Code Composer Studio program and select a new workspace directory. In this example, a workspace named tutorial_ws was created. After selecting the workspace, the Getting Started screen will appear.
  • On this screen, click View -> Target Configurations. In the opened menu, click the New Target Configuration File button in the top-right corner to open the new configuration screen. Enter the configuration name as t3-gem-o1-am67a-debug.ccxml and then click the Finish button.
  • You will now see the configuration settings screen. Here, select your debugger from the Connection dropdown menu (In this case, Texas Instruments XDS2xx USB Debug Probe was selected).
  • Type J722S in the Board or Device filter field and check the box for the J722S_TDA4VEN_TDA4AEN_AM67 device. Then, click the Save button on the right to save the settings and test the debugger connection using the Test Connection button.
  • When the created configuration is executed from the Target Configurations screen, the connection with the development board will be established. From this stage onward, you can connect to the cores and load code.

Configuring JTAG and connecting to the SOC