SBOU328 May   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Quick Start Setup
    2. 2.2 EVM Operation
      1. 2.2.1 Current Sensing Operation
        1. 2.2.1.1 Detailed Setup
    3. 2.3 Circuitry
      1. 2.3.1 Current Sensing IC
      2. 2.3.2 Input Signal Path
      3. 2.3.3 Digital Circuitry
    4. 2.4 PAMB Compatibility
  8. 3Software
    1. 3.1 Setup
      1. 3.1.1 Driver Installation
      2. 3.1.2 Firmware
        1. 3.1.2.1 Firmware Debug
      3. 3.1.3 GUI Setup and Connection
        1. 3.1.3.1 Initial Setup
        2. 3.1.3.2 GUI to EVM Connection
    2. 3.2 GUI Operation
      1. 3.2.1 Homepage Tab
      2. 3.2.2 Configuration Tab
      3. 3.2.3 Registers Tab
      4. 3.2.4 Results Data Tab
    3. 3.3 Direct EVM USB Communication
      1. 3.3.1 Standard USB Read and Write Operations
      2. 3.3.2 Collect Data Through the USB BULK Channel
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Related Documentation

3.1.2.1 Firmware Debug

If the firmware must be manually reinstalled for any reason, then follow these steps to reinstall the firmware. Verify that the EVM is connected to the SCB before being powered on.

  1. First, see if the GUI can program the firmware manually.
    1. Plug in the SCB controller to the PC.

      1. Verify that the EVM is connected to the SCB first.

    2. Launch the GUI and close the READEME.md window.
    3. If the MCU is already in Device Firmware Upgrade (DFU) mode, then a dialog box appears saying "Connection Failure - No SCB controller detected". Close this window.

      1. For a new SCB, the LEDs cycles 4 times and then enters DFU mode automatically.

    4. If the GUI does not update automatically, then go to File > Program Device....

      1. If the Program Device... button is still grayed out, then click the connect button in the lower left corner and then try again.

  2. If step 1 is unsuccessful (or if the Program Device... button is still grayed out), then manually configure the MCU on the SCB Controller to be in DFU Mode. This can be done through either of the below methods with the SCB Controller powered on:
    1. Through software:
      • Send the command 'bsl' on the USB Serial (COM) port of the SCB.
    2. Through hardware:
      • For safety, turn off and disconnect all load sources and external voltages.
      • While shorting the two test points labeled DFU (shown in Figure 3-1) with a pair of tweezers (or wire), press and release the RESET button.
        INA2227EVM Test Points Used to Enter DFU Mode ManuallyFigure 3-1 Test Points Used to Enter DFU Mode Manually
      • If the PAMB board is being used instead, then these test points are located near PK1 and PK2.

With the MCU in DFU mode, the firmware can now be uploaded through the method outlined in Step 1. If the device is in DFU mode, but the firmware update continues to fail, then manually associate the driver ("boot_usb.inf") with the DFU device.