SLAU678C March   2016  – November 2022

 

  1.   Abstract
  2.   Trademarks
  3. 1Getting Started
    1. 1.1 Introduction
    2. 1.2 Key Features
    3. 1.3 What's Included
      1. 1.3.1 Kit Contents
      2. 1.3.2 Software Examples
    4. 1.4 First Steps: Out-of-Box Experience
      1. 1.4.1 Connecting to the Computer
      2. 1.4.2 Running the Out-of-Box Demo
        1. 1.4.2.1 Live Temperature Mode
        2. 1.4.2.2 FRAM Data Log Mode
        3. 1.4.2.3 SD Card Data Log Mode
    5. 1.5 Next Steps: Looking Into the Provided Code
  4. 2Hardware
    1. 2.1 Block Diagram
    2. 2.2 Hardware Features
      1. 2.2.1 MSP430FR5994 MCU
      2. 2.2.2 eZ-FET Onboard Debug Probe With EnergyTrace++ Technology
      3. 2.2.3 Debug Probe Connection: Isolation Jumper Block
      4. 2.2.4 Application (or Backchannel) UART
      5. 2.2.5 Special Features
        1. 2.2.5.1 microSD Card
        2. 2.2.5.2 220-mF Super Capacitor
    3. 2.3 Power
      1. 2.3.1 eZ-FET USB Power
      2. 2.3.2 BoosterPack Plug-in Module and External Power Supply
      3. 2.3.3 Super Cap (C1)
        1. 2.3.3.1 Charging the Super Cap
        2. 2.3.3.2 Using the Super Cap
        3. 2.3.3.3 Disabling the Super Cap
    4. 2.4 Measure MSP430 Current Draw
    5. 2.5 Clocking
    6. 2.6 Using the eZ-FET Debug Probe With a Different Target
    7. 2.7 BoosterPack Plug-in Module Pinout
    8. 2.8 Design Files
      1. 2.8.1 Hardware
      2. 2.8.2 Software
    9. 2.9 Hardware Change Log
  5. 3Software Examples
    1. 3.1 Out-of-Box Software Example
      1. 3.1.1 Source File Structure
      2. 3.1.2 Out-of-Box Demo GUI
      3. 3.1.3 Power Up and Idle
      4. 3.1.4 Live Temperature Mode
      5. 3.1.5 FRAM Log Mode
      6. 3.1.6 SD Card Log Mode
    2. 3.2 Blink LED Example
      1. 3.2.1 Source File Structure
    3. 3.3 BOOSTXL-AUDIO Audio Record and Playback Example
      1. 3.3.1 Source File Structure
      2. 3.3.2 Operation
    4. 3.4 Filtering and Signal Processing With LEA Reference Design Example
      1. 3.4.1 Source File Structure
      2. 3.4.2 Operation
    5. 3.5 Emulating EEPROM Reference Design Example
      1. 3.5.1 Source File Structure
      2. 3.5.2 Operation
  6. 4Resources
    1. 4.1 Integrated Development Environments
      1. 4.1.1 TI Cloud Development Tools
        1. 4.1.1.1 TI Resource Explorer Cloud
        2. 4.1.1.2 Code Composer Studio Cloud
      2. 4.1.2 Code Composer Studio™ IDE
      3. 4.1.3 IAR Embedded Workbench for MSP430
    2. 4.2 LaunchPad Websites
    3. 4.3 MSPWare and TI Resource Explorer
    4. 4.4 FRAM Utilities
      1. 4.4.1 Compute Through Power Loss (CTPL)
    5. 4.5 MSP430FR5994 MCU
      1. 4.5.1 Device Documentation
      2. 4.5.2 MSP430FR5994 Code Examples
      3. 4.5.3 MSP430 Application Notes and TI Reference Designs
    6. 4.6 Community Resources
      1. 4.6.1 TI E2E Support Forums
      2. 4.6.2 Community at Large
  7. 5FAQ
  8. 6Schematics
  9. 7Revision History

3.1.4 Live Temperature Mode

To enter the live temperature mode, click the Start button below Live Temp Mode in the GUI Application Controls panel (see Figure 3-2).

GUID-83CE4049-F171-4B69-ACF4-1A6A297D7980-low.pngFigure 3-2 Live Temperature Mode

The MSP430FR5994 first sends two ADC calibration constants for the temperature sensor to the PC GUI. It then sets up its 12-bit ADC for sampling and converting the signals from its internal temperature sensor. A hardware timer is also configured to trigger the ADC conversion every 0.125 seconds before the device enters low-power mode 3 to conserve power. As soon as the ADC sample and conversion is complete, the raw ADC data is sent the through the UART backchannel to the PC GUI.

As the raw ADC data is received by the PC GUI, Celsius and Fahrenheit units are calculated first. The PC GUI keeps a buffer of the most recent 100 temperature measurements, which are graphed against the current time of the PC on the Incoming Data panel.

A red horizontal line is drawn across the data plot to indicate the moving average of the incoming data.

To exit this mode, click the Stop button under Live Temp Mode. You must exit this mode before starting the other modes.