Raspberry Pi 8268825 Manual

Raspberry Pi Ikke kategoriseret 8268825

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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 storage — after 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:	8268825

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