Raspberry Pi 8134164 Manual


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Side 1/3
Raspberry Pi Gets Industrial
Posted by Tue, Apr 08 2014 13:25:00 Andrew Back on
A sneak peek at the brand new Raspberry Pi Compute Module and IO Board.
Yesterday the Raspberry Pi Foundation announced a new addition to their hardware family,
the Compute Module, which is targeted at business and industrial users. Designed from the
outset to be incorporated into larger designs, this is packaged in an extremely compact SO-
DIMM form factor.
The Compute Module dispenses with ports, leaving their specification down to those who
design the mainboard into which it will be inserted. It also dispenses with an Ethernet
controller, since not every application will have a need for this. However, one thing that it
does include, aside from obviously the Broadcom SoC, is 4GB of flash storageafter all, it
wouldn't be much use if it couldn't boot.
The SO DIMM connector is great for production use, but it's clearly not the most convenient -
of hardware interfaces for bench prototyping, hence why the module launched with a
companion IO board that packs a healthy selection of connectors and 0.1” pitch breakout.
Setting up
The IO board provides HDMI and USB host ports for
hooking up a display and input devices. However,
my preferred hardware console is a trusty serial
connection, and so with the Compute Module
inserted into the SO DIMM socket on the IO board, I -
connected up a USB UART.
Power was then supplied via the Micro USB
connector labelled Power In.
Resources
The Compute Module boots in just the
same way as the Raspberry Pi Model A
or B, with the difference being that the
boot device is on-board flash storage
rather than an SD card.
Logging in and executing a few familiar
commands we see that we have a root
filesystem of 3.5GB and that the only
network interface is loopback.
I decided to connect a USB Ethernet
adapter to see if this would provide a
new network interface.
However, while the Ethernet adapter powered up
and was detected by Linux, it wasn't supported by
the kernel or a loadable module. So it looks as
though adding support for peripherals will require
copying a new kernel or modules onto the on-
board flash which should be simple enough to
do.
Hello World
As mentioned previously the IO board provides
plenty of 0.1” breakout, and just to confirm that
the GPIO pins functioned as expected I hooked
up an LED and attempted to toggle the pin
from the bash prompt. Sure enough, upon
exporting the pin, setting its direction to output
and value to 1, the LED illuminated. No
surprises here!


Produkt Specifikationer

Mærke: Raspberry Pi
Kategori: Ikke kategoriseret
Model: 8134164

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