Elektor Electronics Magazine - May ...

Elektor Electronics Magazine - May 2009 (Malestrom), Książki i czasopisma Elektroniczne, Czasopisma, Elektor ...

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www.elektor.com May 2009
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electronics worldwide
USB 3.0 SuperSpeed
What to expect?
Oscilloscopes
Pico and Velleman compared
MSP430 all the way
Embedded C course
and development board
R21
USB
Courseware on course
Bascom AVR
(6),
FPGA
(9),
Microcon-
troller Basics
(5) and
Basic Stamp
(7)
are just a few courses published in
Elektor over the past few years. The
igures in brackets are the number of
instalments eventually carried in the
magazine. True, in some cases far
fewer instalments were planned and the
author(s) and editors simply got carried
away. Those of you with a memory
longer than our website (i.e. pre-2000)
may recall equally winning
courses like
Figuring it Out
,
8051 Assembly Langu-
age
and
Neural Networks
.
With hindsight the relative success
of most of Elektor’s courses is due
to close interaction between the
courseware elements: what’s on paper,
the hardware supplied, the (free)
software, didactics and support from
the tutoring party. Good interaction is
a condition for reader involvement and
the lot either ‘taking off’ or sinking into
oblivion after two months or so. Only
the very best of courses make it to the
book, CD or ‘product bundle’ level.
Although there is no shortage of
books and online material on the C
programming language, much of this
is general-purpose at best, with a
division between PC programming on
the one hand and ‘embedded’ pro-
gramming on the other. Still, C being
very much a ‘broadband’ language
— also for embedded applications
— book authors for obvious reasons
may not want to limit themselves to
coverage of a speciic processor.
However, for a monthly journal like
Elektor the strength is exactly there as
it is better geared to acute focusing in
the ield. A good example is the pair
of MSP430 articles in this month’s
issue. In good Elektor tradition,
one article is the hardware show
(page 18) while the other (page 22)
kicks off a short course on C specii-
cally for Texas Instrument’s best known
16-bit RISC micro at the electronics
enthusiasts’ level. As I was able to
witness on several Embedded Systems
Conference exhibitions, the MSP430
has a huge following particularly in
the student area and TI deserves cre-
dit for not having lost the connection
with the embedded community, which
has strong tendency to disappear
underground and into rucksacks for
software (IP) and hardware respec-
tively. The only disadvantage of TI’s
student-aimed eZ430 stick is a lack of
connectivity so Elektor teamed up with
two automotive electronics teachers to
churn out an MSP430 development
system and a matching
Embedded
C
course we hope you will actively
participate in.
Experimenting with the
MSP430
18
22 Getting Started with Embedded C
This is the irst instalment of a three-
part series which will introduce the
fundamentals of programming a
microcontroller in C. You can
immediately try all the examples
using the MSP430 hardware
in combination with a PC or
laptop which has a USB
interface. The software
we’ve used is available as
a free download.
48 V & I Calibrator
It’s dificult to be sure that your digital
multimeter (DMM) is taking accurate
measurements especially if it’s a few years
old. This handy calibrator gives full scale
reference levels of both voltage and current,
designed speciically for the scale ranges used
by DMMs.
Jan Buiting
Editor
CONTENTS
Volume 35
May 2009
no. 389
Experimenting with the
MSP430
projects
18
Experimenting
with the MSP430
22
Getting Started
with Embedded C
32
Automatic
Running-In Bench (2)
40
Brim Full (ATM18 series)
48
V & I Calibrator
52
Pocket Calculator
Control Interface
66
R32C/111 goes OLED
The I/O facilities of TI’s USB evaluation sticks for its low-
cost MSP430 controllers being limited it’s a good idea
to design a dedicated experimenter’s board. The board
and the stick form the hardware basis for an
Embedded
C course
also found in this issue.
60 PC-Based Instruments
72
RGB LED Driver
In this article we examine a
pair of two-channel units that
also include a built-in function
generator:
technology
26
USB 3.0 Superspeed
the PicoScope 2203
and the
Velleman
PCSGU250.
info & market
6
Colophon
8
Mailbox
10
News & New Products
38
USB-on-the-go, OLED and
capacitive touch pad
56
XMEGA Revealed
60
PC-Based Instruments
(USB oscilloscopes review)
80
Elektor SHOP
84
Coming Attractions
66 R32C/111 goes OLED
With OLEDs it’s not all plain
sailing since driving them by
microcontroller presents developers
with a number of challenges.
Continuing our series on the
Renesas R32C, we trawl the theory
to come up with a highly practical
solution using the R32C carrier
board.
infotainment
76
Hexadoku
77
Retronics:
Elektor Mini Crescendo
(1984)
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