Backchannel Uart Pathway; Application Backchannel Uart In Device Manager - Texas Instruments LaunchPad MSP-EXP430F5529LP User Manual

Hardware
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
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.
18
MSP-EXP430F5529LP LaunchPad™ Development Kit User's Guide
USB Connector
ESD
Protection
TUSB2046
6MHz Full-Speed
USB Hub
Figure 14. Backchannel UART Pathway
Section 3.7 for instructions on starting Device Manager.)
Copyright © 2013–2014, Texas Instruments Incorporated
eZ-FET lite
Emulator
USB
MCU
Isolation
Jumper Block
F5529 @ŒP š[
USCI_A1 Interface
SLAU533B – September 2013 – Revised June 2014
www.ti.com
4MHz
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