Re: [ts-7000] Re: ts7800 DIO output only outputs at 50 Hz

[Jonathan Leslie <>]

I don't think 3mhz "bandwidth" is the same as GPIO controlled DIO.   does anybody have any testable, compilable C code that I can run and benchmark claimed DIO switching?   I'm looking for the fastest frequency with a 50% duty cycle, as well as shortest pulse width achievable.

Tia



--- On Sat, 11/5/11, ChrisI <> wrote:

From: ChrisI <>
Subject: [ts-7000] Re: ts7800 DIO output only outputs at 50 Hz
To:
Date: Saturday, November 5, 2011, 3:05 PM

 

Hi,

Am just experimenting with the PC/104 as GPIO output.
I can reach above 3MHz bandwidth, thus you should definitely
be able to achieve your goal.

C.

--- In , "Jaan" <> wrote:
>
> Hi,
>
> * http://home.greenrain.us/ts-7800-codeworks/7800DIO
> This page suggests that it is not possible to go beyond 50 Hz. Haven't tried it myself.
>
> I think you can use some pins of the PC/104 header as GPIO; this should be a lot faster. Also, you could use the external PC/104 board called TS-DIO24. I've tried both, but not checked their speed. TS-DIO24 was able to control a stepper motor from a scanner pretty well, it should certainly be much faster than 50 Hz.
>
> Jaan
>
> --- In , "thoff88" <ahvw9@> wrote:
> >
> > Please keep in mind that I am fairly new to using the ts7800, but I am trying to drive a speaker with a square wave outputted from one of the pins on the DIO header. The problem is that the board seems to only toggle pin values at a maximum frequency of 50 Hz. Is there a way to output at a higher rate?
> >
> > Any help is very much appreciated.
> >
>

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