Zippy Chip
erco
Posts: 20,261
I hate to suggest· Parallax alternatives, but has anybody tried one of these? http://www.coridiumcorp.com/catalog/product_info.php?products_id=84
Impressive specs: BASIC or C, 52 IOs, 8000 variables,·25 million lines of code/sec, 128K code space...
BASIC Atom, BasicX, Arduino, Cubloc. So many chips, so little time. You still can't beat these Parallax forums.
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·"If you build it, they will come."
Impressive specs: BASIC or C, 52 IOs, 8000 variables,·25 million lines of code/sec, 128K code space...
BASIC Atom, BasicX, Arduino, Cubloc. So many chips, so little time. You still can't beat these Parallax forums.
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·"If you build it, they will come."
Comments
The I/O specs are a bit of a yawner. With the possible exception of the built-in ADCs and the number of available pins, the Prop can match or equal all of them. I mean, "Frequency synthesis to 500 kHz"? Wooooh!
-Phil
http://www.coridiumcorp.com/Support.php (scroll down)
And they appear to charge for software.
DJ
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Leon Heller
Amateur radio callsign: G1HSM
"The ARMbasic compiler is freely downloaded, but the utility to install BASIC support libraries is locked to a PC. But we do support a DEMO mode that limits variables to 100 words and 4K of code. To install this firmware follow these steps:"
PBASIC never looked so good!
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·"If you build it, they will come."
While we're advertising Parallax competitors, I was looking at a board with a Cypress PSoC on it. I was particularly interested in the analog functions, as that pertains to the project I'm working on at the moment. As one of those Swiss Army Knife type chips, I think this would be a good candidate for something to be interfaced with the Prop.
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- Stephen
The gcc toolchain for ARM is good, I'd use it instead of their basic
you have to pay for. With this at just 100mhz a prop could actually
get more done and no hassling with interrupt routines. You need
way more speed than 100mhz to handle a lot of intense interrupt
code on an ARM.
and a 3.5" LCD. It can run Linux. About 500mips
max. Lots of goodies on this thing. A nice way to
learn about ARM. 120.00
en.stkshop.com/Study-Dev/ARM-board-simulator/samsung-s3c2440-board.html
Post Edited (HollyMinkowski) : 5/28/2010 12:13:16 AM GMT
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Check out my new website!!
Use the Propeller icon!!
Follow me on Twitter! Search "Microcontrolled"
I'm not saying to not get it but with all these projects, I wouldn't know which one to do first.
Subject: "dont buy this board"
"This board is giving lot of problems
"it is not booting sometimes
"Active sync is not connecting
"there is no quick start guides
"first of all there is no support ........
http://www.friendlyarm.net/forum/topic/1115
Anyone that can program the prop can
easily handle working with ARM. You will
however come face to face with lots of
interrupt coding
Nothing says you can't combine ARM and
a prop on a project...not much harder than
an AVR + prop project.
Looks like it may need a bigger than 10uf cap for the
3.3 v regulator...not enough reserve in the 10uf.
A guy further down on that thread says something rather
cold to the guys moaning about the pwr supply glitch.
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No problems with my boards.
I think you guys are to dumb to work with sophisticated equipment and
software.
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That's pretty harsh
but they would make a very good dedicated project board
here is what a basic ode would be to use pin 15
DIR(15)= 1 ' enable pin 15 as an output
WHILE X<30
OUT(15) = X AND 1 ' drive pin 15 high when x is odd, low when x is even
X=X+1
WAIT(500)
LOOP
Now RUN the program
my armmite board came with sample code I have been using this board as a 15 port logic analyzer for 49 dollars its not bad
Holly that board is crazy I tried to order it but everything I click on that site says error
Post Edited (mikediv) : 5/28/2010 1:25:14 AM GMT
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Check out my new website!!
Use the Propeller icon!!
Follow me on Twitter! Search "Microcontrolled"
At your age I was barely able to program a 16F84
PIC, and poorly program it at that. The prop would have
scared me.
http://www.futurlec.com/ET-ARM_Stamp.shtml
I read the reviews on different electronic websites for computers and almost everyone has a problem with everything so I have to read it with a grain of salt.· These things probably aren't for beginners as I don't have any experience with ARM or interrupts yet.· So when a beginner encounters a problem, they are going to be frustrated.· It is possible the power supply needs a new capacitor but how many of us want to go take apart the unit to give it the right capacitor?
and I suppose they all have their niches.
BASIC and C tools are free, the only charge for BASIC if you want to run it on a board not built by Coridium.
The BASIC benchmark used, was something run on the BASIC stamp and agreed with the published speeds that Parallax shows for their performance. That same benchmark was then run on both the LPC2103 and newer LPC1756 parts. A quick example
x=25000000
while x
x=x-1
loop
completes in 3 seconds
The LPC1756 has 32K of RAM and 256K of Flash memory. Programs can be run from all of memory, with those in RAM running about twice as fast as Flash. There are quite a few built in peripherals, 4 usable ADs, 4 UARTs, USB, 3 SPI, 2 I2C, CAN controller, PWM controller, specialized Motor PWM controller, Quadrature encoder and 4 Timers. Those hardware features offload quite a bit from the CPU.
The Cortex M3 has very simple interrupt processing. There are 35 possible interrupt sources, all you need to do it program the address of the interrupt routine and enable the interrupt. Inside the interrupt the interrupt has to be cleared and you return. The overhead of register save is handled by both the C and BASIC compilers.
but it does not say anyhting about changing the device to english so right there its pretty worthless then for no reason it just stopped working its tottaly dead I even tried my own power supply its getting power but the rest of the board is dead
I got no where with the company ,, its to bad it looks like it would have been a nice system for a 100 bucks but BEWARE
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Speed is relative. This ARM Cortex-M3 board running C code is much faster than a Propeller running Spin code. You'd have to write your code in PASM in order to better it in performance.
The Cortex-M3 chips have a much simplified interrupt structure than previous ARM chips. In fact, no C compiler support at all is needed--an interrupt handler is just an ordinary C function and there's no need for pragmas or _Interrupt keywords or anything like that.