from iowarrior 24 to 56

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slashj
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from iowarrior 24 to 56

Beitragvon slashj » Mo Feb 16, 2009 3:18 am

G'day,

currently we have the IOW24 to drive a series of LEDs, using code i wrote that interface with Matlab.
I understand the IOW56 has a 1ms latency period as opposed to the much slower IOW24 and am interested
in upgrading.

Are the software side of things very similar? I.e., will a great deal of code change be required?

Note: all the code does is light the LED on/off after X ms. very simple.

cheers

/j
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Re: from iowarrior 24 to 56

Beitragvon Guido Körber » Mo Feb 16, 2009 12:12 pm

The basic functionality is identical, of course you have to take care to adapt the data format, the 50 I/Os of IOW56 do not fit in the same report format as the 16 of the IOW24.
slashj
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Re: from iowarrior 24 to 56

Beitragvon slashj » Di Feb 17, 2009 1:11 am

Cheers mate.

2 more questions

1) do you have an Application Note for iow56 connecting to 32/64 LEDs?
or does the same app note as iow24 applies? I am interested in the led power driver chips etc,
whether we can use the same ones.

2) While the reporting rate of the iow56 is 1ms, Windows XP have a much slower update rate (default usb 8ms)?
So the system will still be quantised at 8ms?
Or am I confused with this point?

thanks.
Guido Körber
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Re: from iowarrior 24 to 56

Beitragvon Guido Körber » Di Feb 17, 2009 1:38 am

1. The same ap note applies. The IOW56 can drive a larger LED matrix, but the circuit is exactly the same as for IOW24/40.

2. No, Windows does poll at 1ms if the device defines this.
slashj
Beiträge: 6
Registriert: Fr Mär 03, 2006 7:10 am

Re: from iowarrior 24 to 56

Beitragvon slashj » Di Feb 17, 2009 2:03 am

Mate, you are a legend.

preparat alveo http://www.alveo-akuna.pl

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