SBOU276 January   2023

 

  1.   SBOU276 Abstract
  2. 1Trademarks
  3. 2Overview
    1. 2.1 Kit Contents
    2. 2.2 Related Documentation From Texas Instruments
  4. 3Hardware
    1. 3.1 Features
  5. 4Operation
    1. 4.1 Quick Start Setup
    2. 4.2 EVM Operation
      1. 4.2.1 Setup
        1. 4.2.1.1 Driver Installation
        2. 4.2.1.2 Firmware
          1. 4.2.1.2.1 Firmware Debug
        3. 4.2.1.3 GUI Setup and Connection
          1. 4.2.1.3.1 Initial Setup
          2. 4.2.1.3.2 GUI to EVM Connection
      2. 4.2.2 GUI Operation
        1. 4.2.2.1 Homepage Tab
        2. 4.2.2.2 Configuration Tab
        3. 4.2.2.3 Registers Tab
        4. 4.2.2.4 Results Data Tab
      3. 4.2.3 Current Sensing Operation
        1. 4.2.3.1 Detailed Setup
      4. 4.2.4 Direct EVM USB Communication
        1. 4.2.4.1 Standard USB Read and Write Operations
        2. 4.2.4.2 Collect Data Through the USB BULK Channel
      5. 4.2.5 PAMB Compatibility
  6. 5Circuitry
    1. 5.1 Current Sensing IC
    2. 5.2 Input Signal Path
    3. 5.3 Digital Circuitry
  7. 6Schematics, PCB Layout, and Bill of Materials
    1. 6.1 Schematics
    2. 6.2 PCB Layout
    3. 6.3 Bill of Materials

4.2.2.3 Registers Tab

To view and edit the device registers, click the (Registers) icon on the menu to the left. The Registers tab will look like the one shown in Figure 4-11.

Figure 4-11 GUI Registers Tab

From this page, you can read and write device registers on the EVM. Here are some important notes:

  • Use the Selected EVM drop-down menu at the top to choose which device to work with on the register map.
    • Note, changing this here also changes the same setting for the Configuration tab.
    • Functionally, this setting sets the default read/write address in the MCU and then reads all register values back to update the register map. Note that if data is being collected at a high frequency, then this may cause a minor delay in the data collection. For optimal performance, set device settings before you start collecting data.
  • By default, all changes are automatically written to the device. If desired, you can change the Immediate Write setting to Deferred Write to only allow writing when you are ready.
    • You can modify writable register values from any of these methods:
      • Through the widget settings in the Field View section on the right.
      • Changing the Value directly with either hex or decimal values.
      • Double-clicking on any individual bit.
  • Turning on Auto Read will only update registers in the register map, and not the plots in the Results Data section.
    • Leaving Auto Read on while collecting data for plots can interfere with data collection timing.
  • For questions about a register or register bit field, select the GUID-B911F30F-DEDD-46E1-8815-B9A380C8872A-low.png icon.
    • For even more questions about registers, check the data sheet.
  • For convenience, register settings can be saved and loaded back later to any device with the same register map. To do this, go to File > Register Data, as shown in Figure 4-12.
    Figure 4-12 Save and Load Register Settings
    • TI recommends to press the Read All Registers button after loading data to update the register map with the actual device values.