Hardware Reference
In-Depth Information
Figure 5-8.
e2i Touchscreen controller driver enabled
Once your kernel and modules are rebuilt, simply install them into the Raspberry Pi
Linux distribution image. Reboot your Raspberry Pi with the Mimo 720 connected.
On the Mimo 720, the screen will cycle through several colors and patterns as the
Raspberry Pi boots. This is the Mimo 720 initializing the frame buffer, and it means
that the Mimo 720 works properly. At this point, it will stop at a green screen, which
is fine, because you have not yet configured the Linux userspace to run the display.
Within the Raspberry Pi Linux instance, you should see kernel messages like this in
the output of
dmesg
:
udlfb: DisplayLink MIMO - serial #101234567
udlfb: DisplayLink USB device /dev/fb1 attached. 800x480 resolution. Using
1504K framebuffer memory
There are a couple ways you can get this information from your Raspberry Pi:
• SSH into the Raspberry Pi (see
Hack #12
).
• Connect a monitor to the HDMI or composite video.
Later, you're going to reconfigure X to run the main display to the Mimo 720, but for
now, the graphical X11 display should still be running on the directly connected mon-
itor.
