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AFE4403EVM Hardware
5.5
On-Board Key Interface
The EVM has 2 switches. The function of each switch is defined in
Table 4
Table 4. AFE4403EVM Switches
Switch Number
Description
SW1
This switch is used for hard reset of the board. The board resets and starts again with the firmware loaded.
SW2
This switch is used to enable boot strap loader (BSL) MSP430 firmware.
(1)
(1)
To enable BSL, disconnect device and then reconnect while holding down SW2. The device will appear as an HID device in the
device manager.
5.6
Visual Indication
The blue LED (LED3) indicates the USB power connection. The blue LED (LED1) indicates that the
microcontroller is busy servicing the requests from the PC application.
6
USB-Based Firmware Upgrade
The firmware on the AFE4403EVM can be changed from the PC application by selecting the
Firmware
Upgrade
menu option on the PC application. At the end of the firmware upgrade, the system issues a
reset command and reloads with new firmware. The firmware upgrade process steps are represented in
the screen shots below:
•
From the PC application, click on
File
→
Firmware Upgrade
•
A pop-up window opens as shown in
Figure 32
. Follow the instructions to continue to Firmware
Upgrade or to cancel the operation.
Figure 32. PC Application Firmware Upgrade – 1
•
The firmware upgrade application detects the connected EVM. (
Figure 33
)
31
SLAU572B – June 2014 – Revised July 2014
AFE4403 Development Guide
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