SBOU264B May   2021  – December 2022

 

  1.   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 Without Shunt Resistor
        2. 4.2.3.2 With Shunt Resistor
      4. 4.2.4 Direct EVM USB Communication
        1. 4.2.4.1 Standard USB CDC Read and Write Operations
        2. 4.2.4.2 Collect Data Through the USB BULK Channel
  6. 5Circuitry
    1. 5.1 Current Sensing IC
    2. 5.2 Input Signal Path
    3. 5.3 Digital Circuitry
      1. 5.3.1 I2C
  7. 6Schematics, PCB Layout, and Bill of Materials
    1. 6.1 Schematics
      1. 6.1.1 SENS079 (INA234EVM, INA236EVM)
      2. 6.1.2 SENS090 (INA232EVM)
    2. 6.2 PCB Layout
      1. 6.2.1 SENS079 (INA234EVM, INA236EVM)
      2. 6.2.2 SENS090 (INA232EVM)
    3. 6.3 Bill of Materials
      1. 6.3.1 SENS079 (INA234EVM, INA236EVM)
      2. 6.3.2 SENS090 (INA232EVM)
  8. 7Revision History

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 similar to the one shown in Figure 4-11, depending on the device connected.

Figure 4-11 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 button 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 collected at a high frequency, then this may cause a minor delay in the data collection. For optimal performance, set the 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, click the GUID-A78AAB3D-2E15-41F2-BF1E-5EC24B47B236-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. (See 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, in case the loaded registers were not compatible with the connected device.