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

2.2.5.1 microSD Card

The MSP430FR5994 LaunchPad development kit features an onboard microSD card. With an SD card, there is another method of cheap data logging available for users. The Out-Of-Box experience comes with an SD Card Library that helps users interface the MSP430FR5994 with the SD card. The library lets users store data in files with a name of their choice, so that the data can be used later in conjunction with a PC.

The slot can detect if a card is present. If a card is inserted while the MSP430FR5994 is on, an interrupt for the MCU is generated. Table 2-3 lists the SD Card Detect pin and the rest of the pin assignments that are used to communicate with the SD card.

Table 2-3 microSD Card to MCU Connections
microSD Card FunctionMSP430FR5994 Pin
SD Card DetectP7.2
SD SPI MOSIP1.6
SD SPI MISOP1.7
SD SPI CSP4.0
SD SPI CLKP2.2

R7 on the MSP430FR5994 LaunchPad development kit is not populated on the board to ensure accurate LPM current measurements. Use the internal MSP pullup resistor in software, or populate R7.

R5 is also not populated. In the SD Card library, the SPI CS line is driven high or low. Often why a pullup resistor like R5 is included is for during system startup. Before the MSP430FR5994 fully starts and outputs a high signal on the CS line, it is possible that CS may be floating, and the SD card may interpret other floating SPI lines as communication. It is a good practice to populate this resistor in an application where the exact startup conditions are not controlled. For the LaunchPad development kit, this resistor is removed for precise current measurements when all GPIO are set low.