Instructions

ESD

Protection

TUSB2046

Full-Speed

USB Hub

6MHz

USB Connector

UART

USB Hub and Power

eZ-FET lite Emulator

USB

F5529 dP[

USCI_A1 Interface

4MHz

eZ-FET lite

Emulator

MCU

Isolation

Jumper Block

Hardware

www.ti.com

Figure 14. Backchannel UART Pathway

On the host side, a virtual COM port for the application backchannel UART is generated when the F5529

LaunchPad enumerates on the host. You can use any PC application that interfaces with COM ports,

including terminal applications like Hyperterminal or Docklight, to open this port and communicate with the

target application.

You need to identify the COM port for the backchannel. On Windows PCs, Device Manager can assist

(see Figure 15). (See Section 3.7 for instructions on starting Device Manager.)

Figure 15. Application Backchannel UART in Device Manager

The backchannel UART is the port named "MSP Application UART1". In this example, the figure shows

COM13, but the port number varies from one host PC to the next.

After you identify the correct COM port, configure it in your host application according to its

documentation. You can then open the port and begin talking to it from the host.

On the target F5529 side, the backchannel is connected to the USCI_A1 module.

Unlike the eZ-FET on the G2 LaunchPad, this eZ-FET lite has a configurable baudrate. Therefore, it is

important that the PC application configures the baudrate to be the same as what is configured on the

USCI_A1.

MSP430F5529 LaunchPad™ Development Tool (MSP

‑

EXP430F5529LP) SLAU533A–September 2013–Revised January 2014

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