Quick Start Guide: LPC1768-Xplorer
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3.3.3 User Input Switch
Test setup and verification
:
Once the VCOM drivers are installed the Xplorer waits for the User Input Switch to be pressed. Only
after detecting a user button (SW2) press the test firmware proceeds with validating other peripherals.
This synchronization is necessary to ensure that the debug messages on the VCOM port can be viewed
from the start of the test. Without this synchronization the test firmware would proceed with the debug
messages being displayed, while the user is still configuring the Hyper-Terminal or other serial
emulation tool.
Fig.19
3.3.4 Micro SD connector
Test setup and verification
:
The firmware validates the micro SD card interface by writing and reading few sectors of the SD card
connected. Please note that we need to use a micro SD card with FAT file system. The result of this test
is displayed over the VCOM port.