8
Getting
Started
h)
Refer to the FET User’s Guide, FAQ on Debugging #1 if the debugger is unable to
communicate with the device.
i)
Use DEBUG
Æ
GO to start the application. If the device is connected to the PC for the
first time with the firmware running, device installation/first time enumeration occurs.
Refer Section 4.6
4.5
USB Device First-Time Enumeration
When a USB device is attached to a USB host (PC), the host
enumerates
it; that is, it queries
the device as to what it is, and loads the corresponding drivers. The first time a device is
attached, the OS may need help in locating the corresponding drivers so it can install the new
device. Windows requests this by prompting the “Found New Hardware” wizard.
Drivers for CDC (Communications Device Class) are already installed within Windows, but
Windows needs to be guided to an *.inf file (MSP430_CDC.inf) included with this kit. Using this
*.inf file, Windows can finish loading the appropriate drivers.
NOTE
: The enumeration procedure discussed here, takes place only the first time a specific
USB device is connected to the USB host (PC). Successive enumerations for the same USB
device happen without any need for user intervention.
The following steps give a detailed description of the device installation/first-time enumeration
procedure for MSP430F6638 (under Windows XP). The procedures are also somewhat similar
for other Windows operating systems.
1.
On connecting the MSP430F6638 target board to PC, Windows detects the new device
attached to PC and initiates the “Found New Hardware Wizard” prompting the user to
install the software for the detected USB Device.
2.
Select "No, not this time" from the options available and then click "Next" to proceed with
the installation.
