SWRU637 March   2025

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Temperature Range
    3. 2.3 Energy Trace
    4. 2.4 Hardware and Debug Setup
      1. 2.4.1 Using a LaunchPad XDS110 Debug Probe
      2. 2.4.2 Using a Generic XDS110 Debug Probe, Including a Separate LaunchPad
    5. 2.5 BoosterPack Connector Pinout
    6. 2.6 XDS110 Interface Connector
    7. 2.7 Debug Interface Connector
    8. 2.8 Jumper Information
    9. 2.9 Push Buttons
  9. 3Advanced use of the LaunchPad Hardware
    1. 3.1 External Antenna
    2. 3.2 XDS110 GPIOs
    3. 3.3 Reset Selection on BoosterPack Connector
    4. 3.4 I2C Pullup Resistors
  10. 4Software
    1. 4.1 Getting Started
    2. 4.2 Out of Box Demo
  11. 5Hardware Design Files
    1. 5.1 Reference Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Compliance Information
    1. 6.1 CE Compliance
    2. 6.2 REACH Compliance
    3. 6.3 Waste Electrical and Electronic Equipment (WEEE) Compliance
  13. 7Additional Information
    1. 7.1 Trademarks
  14. 8References

3.2 XDS110 GPIOs

The LP-EM Debug Connector has three GPIO pins that are controlled by the LaunchPad XDS110 Debug Probe:

  • Pin 3 → XDS_GPIO1
  • Pin 5 → XDS_GPIO2
  • Pin 9 → XDS_GPIO3

Note: Details on how to use these pins from a host PC are shown in section 3.7.3.3 of the XDS110 Debug Probe User's Guide.

These pins are disconnected by default. In order to enable them, solder three 0 Ω resistors to their corresponding positions at the bottom of the board as showin in Figure 3-2:

  • R19 → XDS_GPIO1
  • R20 → XDS_GPIO2
  • R21 → XDS_GPIO3
LP-EM-CC2340R53 Location of R19, R20, and R21Figure 3-2 Location of R19, R20, and R21

By doing this modification, the CC2340R53 MCU GPIO pins are connected to these signals:

  • DIO7_A0 → XDS_GPIO1
  • DIO2_A3 → XDS_GPIO2
  • DIO1_A4 → XDS_GPIO3