SLAA517F May   2012  – August 2021 MSP430F6720A , MSP430F6720A , MSP430F6721A , MSP430F6721A , MSP430F6723A , MSP430F6723A , MSP430F6724A , MSP430F6724A , MSP430F6725A , MSP430F6725A , MSP430F6726A , MSP430F6726A , MSP430F6730A , MSP430F6730A , MSP430F6731A , MSP430F6731A , MSP430F6733A , MSP430F6733A , MSP430F6734A , MSP430F6734A , MSP430F6735A , MSP430F6735A , MSP430F6736 , MSP430F6736 , MSP430F6736A , MSP430F6736A

 

  1.   Trademarks
  2. 1Introduction
  3. 2System Diagrams
  4. 3Hardware Implementation
    1. 3.1 Power Supply
      1. 3.1.1 Resistor Capacitor (RC) Power Supply
    2. 3.2 Analog Inputs
      1. 3.2.1 Voltage Inputs
      2. 3.2.2 Current Inputs
  5. 4Software Implementation
    1. 4.1 Peripherals Setup
      1. 4.1.1 SD24 Setup
    2. 4.2 Foreground Process
      1. 4.2.1 Formulas
        1. 4.2.1.1 Voltage and Current
        2. 4.2.1.2 Power and Energy
    3. 4.3 Background Process
      1. 4.3.1 Voltage and Current Signals
      2. 4.3.2 Phase Compensation
      3. 4.3.3 Frequency Measurement and Cycle Tracking
      4. 4.3.4 LED Pulse Generation
  6. 5Energy Meter Demo
    1. 5.1 EVM Overview
      1. 5.1.1 Connections to the Test Setup for AC Voltages
      2. 5.1.2 Power Supply Options and Jumper Settings
    2. 5.2 Loading the Example Code
      1. 5.2.1 Opening the Project
  7. 6Results and Calibration
    1. 6.1 Viewing Results
    2. 6.2 Calibrating the Meter
      1. 6.2.1 Gain Correction
      2. 6.2.2 Phase Correction
      3. 6.2.3 Metrology Results
  8. 7References
  9. 8Schematics
  10. 9Revision History

5.2.1 Opening the Project

The "source" folder structure is shown in Figure 5-4.

GUID-BB2DB441-2754-47F9-8406-6A5FB99A1219-low.gif Figure 5-4 Source Folder Structure

The folder "emeter-ng" contains multiple project files. For this application, the emeter-6736.ewp project file is to be used. The folder "emeter-toolkit" has corresponding project file emeter-toolkit-6736.ewp. Choose only the projects that have the succeeding terms 6736 for this application. For first time use, it is recommended that both the projects be completely rebuild.

  1. Open IAR Embedded Workbench.
  2. Find and load the project emeter-toolkit-6736.ewp.
  3. Rebuild all.
  4. Close the existing workspace and open the main project emeter-6736.ewp.
  5. Rebuild all and load this on to the MSP430F6736, which is shown in Figure 5-5.
GUID-9EB9FC26-D869-4D77-9E2B-131B9F1E6CFF-low.gifFigure 5-5 Toolkit Compilation in IAR
GUID-E78A9E25-6D3A-4E75-A9C5-9099512615D4-low.gifFigure 5-6 Metrology Project Build in IAR
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