SPRUJ31 april   2022

 

  1.   1
  2.   C2000 F28003x Series LaunchPad Development Kit
  3.   Trademarks
  4. 1Board Overview
    1. 1.1 Kit Contents
    2. 1.2 Features
    3. 1.3 Specifications
    4. 1.4 Using the F28003x LaunchPad
    5. 1.5 BoosterPacks
    6. 1.6 Hardware Revisions
      1. 1.6.1 Revision A
  5. 2Software Development
    1. 2.1 Software Tools and Packages
    2. 2.2 F28003x LaunchPad Demo Program
    3. 2.3 Programming and Running Other Software on the F28003x LaunchPad
  6. 3Hardware Description
    1. 3.1 Functional Description and Connections
      1. 3.1.1  Microcontroller
      2. 3.1.2  Power Domains
      3. 3.1.3  LEDs
      4. 3.1.4  Encoder Connectors
      5. 3.1.5  FSI
      6. 3.1.6  CAN
      7. 3.1.7  CLB
      8. 3.1.8  Boot Modes
      9. 3.1.9  BoosterPack Sites
      10. 3.1.10 Analog Voltage Reference Header
      11. 3.1.11 Other Headers and Jumpers
        1. 3.1.11.1 USB Isolation Block
        2. 3.1.11.2 BoosterPack Site 2 Power Isolation
        3. 3.1.11.3 Alternate Power
    2. 3.2 Debug Interface
      1. 3.2.1 XDS110 Debug Probe
      2. 3.2.2 XDS110 Output
      3. 3.2.3 Virtual COM Port
    3. 3.3 Alternate Routing
      1. 3.3.1 Overview
      2. 3.3.2 UART Routing
      3. 3.3.3 EQEP Routing
      4. 3.3.4 CAN Routing
      5. 3.3.5 FSI Routing
      6. 3.3.6 X1/X2 Routing
      7. 3.3.7 PWM DAC
  7. 4Board Design
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 BOM
    4. 4.4 LAUNCHXL-F280039C Board Dimensions
  8. 5Frequently Asked Questions
  9. 6References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design

2.2 F28003x LaunchPad Demo Program

The LAUNCHXL-F280039C includes a TMSF280039CSPZ device pre-programmed with a demo program. When the LaunchPad is powered on the demo program begins with an LED blink sequence on LED4 and LED5. After a few seconds the device switches into an ADC sampling mode.

Every 1 second the ADC samples pin ADCINA6 and the sampled value is represented as follows: If the sample is above mid-scale (2048), the red LED4 will illuminate. If the sample is below mid-scale, the green LED5 will illuminate.

In addition to the LED indicators, ADC sample results are also displayed on your PC through the USB/UART connection. To view the UART information on your PC, first determine the COM port associated with the LaunchPad. To do this in Windows open the Device Manager. Look for an entry under Ports (COM and LPT) titled "XDS110 Class Application/User UART (COMX)", where X is a number. Remember this number for when you open a serial terminal.

GUID-5EEE557A-A1E1-4183-A422-429FD4B813FC-low.png Figure 2-1 LaunchPad XDS110 COM Port

The demo application's UART data was tested using PuTTY, which is a free and open-source terminal emulator. To view the UART data in a serial terminal program open the COM port found using the Windows Device Manager with the following settings.

115200 Baud, 8 data bits, no parity, 1 stop bit.

After properly opening the serial port in your serial terminal, reset the LaunchPad by pressing the S1 reset button and observe the serial terminal to see the TI logo in ASCII art.

GUID-20211228-SS0I-NW15-QCDJ-LBQGQPK0XN79-low.png Figure 2-2 LaunchPad Demo Serial Terminal - TI Logo

After a few moments, the ADC value sampled on the ADCINA6 pin will appear in the bottom right corner of the terminal and be updated each second. Using a jumper wire connect the ADCINA6 header to a 3.3V, GND, or other 0-3.3V signal to see the on-screen value change.

GUID-B2E72E18-69B9-4E4D-8017-1F234F604AF9-low.png Figure 2-3 LaunchPad Demo Serial Terminal - ADC Sampling