SLAU927 March   2024 MSPM0G3507

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Setup
    1. 2.1  EVM Hardware Setup
      1. 2.1.1 EVM Hardware Support
    2. 2.2  Pin Configurations for IPD Usage
    3. 2.3  Pin Configurations for PWM Outputs
    4. 2.4  Pin Configurations for ADC Currents
    5. 2.5  Pin Configurations for ADC Voltages
    6. 2.6  Pin Configurations for Faults
    7. 2.7  Pin Configurations for GPIO Output Functions
    8. 2.8  Pin Configurations for SPI Communication
    9. 2.9  Pin Configurations for UART Communication
    10. 2.10 External Connections for Evaluation Boards
  6. 3Software Setup
    1. 3.1 Software Support
  7. 4GUI Setup
  8. 5Register Map
    1. 5.1 User Control Registers (Base Address = 0x202000C8h)
    2. 5.2 User Input Registers (Base Address = 0x20200000h)
  9. 6Basic Tuning
    1. 6.1 System Configuration Parameters
      1. 6.1.1 Configuring System Parameters from GUI
      2. 6.1.2 Motor Resistance in Milliohms (mΩ)
      3. 6.1.3 Motor Inductance in Microhenries (μH)
      4. 6.1.4 Motor BEMF Constant
      5. 6.1.5 Base Voltage (V)
      6. 6.1.6 Base Current (A)
      7. 6.1.7 Maximum Motor Electrical Speed (Hz)
    2. 6.2 Control Configurations for Basic Motor Spinning
      1. 6.2.1 Basic Motor Startup
        1. 6.2.1.1 Disable ISD
        2. 6.2.1.2 Motor Start Option - Align
        3. 6.2.1.3 Motor Open Loop Ramp
        4. 6.2.1.4 Motor Open Loop Debug
      2. 6.2.2 Controller Configuration for spinning the Motor in Closed Loop
        1. 6.2.2.1 PI Controller Tuning for Closed Loop Speed Control
        2. 6.2.2.2 Testing for Successful Startup into Closed Loop
    3. 6.3 Fault Handling
      1. 6.3.1 Abnormal BEMF Fault [ABN_BEMF]
      2. 6.3.2 Monitoring Power Supply Voltage Fluctuations for Voltage Out of Bound Faults
      3. 6.3.3 No Motor Fault [NO_MTR]
  10. 7Advanced Tuning
    1. 7.1 Control Configurations Tuning
      1. 7.1.1 Initial Speed Detection of the Motor for Reliable Motor Resynchronization
      2. 7.1.2 Unidirectional Motor Drive Detecting Backward Spin
      3. 7.1.3 Preventing Back Spin of Rotor During Startup
      4. 7.1.4 Gradual and Smooth Start up Motion
      5. 7.1.5 Faster Startup Timing
      6. 7.1.6 Stopping Motor Quickly
      7. 7.1.7 Preventing Supply Voltage Overshoot During Motor Stop.
      8. 7.1.8 Protecting the Power supply
    2. 7.2 Hardware Configurations
      1. 7.2.1 Direction Configuration
      2. 7.2.2 Brake Configuration
      3. 7.2.3 Real Time Variable Tracking
  11. 8Revision History

4 GUI Setup

The user can optionally use the MSPM0 Sensorless FOC GUI as a host to send commands to the MSPM0 MCU at the target to control the motor using either SWD or UART interface.

When SWD is used, the onboard XDS110 debugger on the MSPM0 LaunchPad kit sends the values from the modified GUI variables. These values are linked to variables and expressions in the motor control software and directly updates those values during run time. When UART is used, the GUI includes a USB-to-UART codec that can send UART commands as a host to the MSPM0 LaunchPad kit. The application software includes a configurable UART register map and data format that translates the UART data into simplified motor control commands.

Table 4-1 GUI Connection Types
Connection Interface Hardware Connections
GUI to target MSPM0 MCU SWD (serial wire debug) SWDIO, SWCLK
GUI to target MSPM0 MCU UART UART3_TX, UART3_RX

To set up the GUI:

  1. Make sure that the hardware is connected as described in Section 2 for evaluation boards or a custom user PCB.
  2. Run the MSPM0 Sensorless FOC GUI.
  3. Configure and tune the motor as described in Section 6 and Section 7.