SPRAD20 March   2022 AM2634 , AM2634-Q1


  1.   Trademarks
  2. 1Introduction
  3. 2A Step-by-Step Guide to Running a Traction Inverter
    1. 2.1 Create Real Time Debug Interface
      1. 2.1.1 Confirm CCS Features
      2. 2.1.2 Create Target Configuration File
      3. 2.1.3 Add Serial Command Monitor Software
      4. 2.1.4 Launch Real Time Debug
    2. 2.2 Configure Control Peripheral and ADC Interrupt With Sysconfig
      1. 2.2.1 Generate PWM for Time Reference
      2. 2.2.2 Synchronize ADC Sampling and Interrupt Service Routine
      3. 2.2.3 Configure DMA for Resolver Excitation via DAC
    3. 2.3 Configure Gate Driver Interface With MSPI
      1. 2.3.1 Confirm Control Card Hardware Configuration for Gate Drivers
      2. 2.3.2 Configure MCSPI for UCC5870 Gate Drivers
      3. 2.3.3 Initialize UCC5870 Gate Drivers
    4. 2.4 Get Samples From ADC and Read Samples Via CCS
      1. 2.4.1 Register and Enable Interrupt
      2. 2.4.2 Add Log Code to Read Samples in Graph at Fixed Rate
      3. 2.4.3 Read ADC Samples in Expression and Graph Windows
    5. 2.5 Generate Space Vector PWM and Drive Motor in Open Loop
      1. 2.5.1 Setup SVPWM Generator Inputs
      2. 2.5.2 Read SVPWM Duty Cycles in Graph Window
      3. 2.5.3 Power Up Inverter and Spin Motor in Open Loop
    6. 2.6 Close Current Loop With Mock Speed
      1. 2.6.1 Add Transformations and Read Id-Iq in Open Loop
      2. 2.6.2 Add Controllers to Close Current Loop
      3. 2.6.3 Read Id-Iq to Close Current Loop
    7. 2.7 Add Software Resolver to Digital Converter
      1. 2.7.1 Generate Excitation for Resolver Hardware
      2. 2.7.2 Add Resolver Software
      3. 2.7.3 Read Resolver Software Outputs
    8. 2.8 Close Speed Loop With Rotor Speed
      1. 2.8.1 Add Speed Loop Controllers
      2. 2.8.2 Add Speed Loop Demo Program
      3. 2.8.3 Read Motor Speed from Graph Window
  4. 3A Brief Guide to Code Migration
    1. 3.1 SoC Architecture Overview
    2. 3.2 SDK Resources Overview
    3. 3.3 Code Migration From AM24
    4. 3.4 Code Migration From C28
  5. 4Summary
  6. 5References

Synchronize ADC Sampling and Interrupt Service Routine

ADC4 is taken as a example in this part. Figure 2-25 gives a summary of ADC4. It is similar to TI classic C28 controllers.

GUID-20220304-SS0I-457J-FRNK-2CJCDF0SMVFJ-low.png Figure 2-25 A Summary of ADC4 Configuration

Figure 2-26 gives an example on SOC0. There are 16 SOC for every ADC. The ADC channel can be configured as either single end or differential. Here, it is triggered by a PWM SOC event.

GUID-20220304-SS0I-0VHV-WDPL-R1JGVZKWVWBL-low.png Figure 2-26 ADC4 SOC Configuration

Once the Start Of Conversions are configured, INTs can be updated like shown in Figure 2-27. The INT is to be created at the End Of Conversion for SOC5.

GUID-20220304-SS0I-BWQ4-VWXF-LDZPDTQT0KML-low.png Figure 2-27 ADC4 INT Configuration

In Figure 2-28, ADC INT is connected to INT_XBAR_0 via XBAR system. The XBAR name is the one used in interrupt registration in later sections.

GUID-20220304-SS0I-VS8N-499J-KKHDZH5NPVWM-low.png Figure 2-28 INT XBAR Configuration