way to go Altera!

A while ago i did some research related to capacitive touch sensing,
and was really surprised to see that this function is offered by
Altera
as ready made solution.

today i was looking at ambient light measurement solutions.
and on the first google search page i found this

http://www.altera.com/literature/wp/wp-01076-led-driver-reduces-power-adjusting-intensity-ambient-light.pdf

cool.

really... no need to think, just look at stuff altera has prepared for
its customers.
hm.. maybe i should make some cool stuff with Altera ICs?

and.. OI I have been so stupid.. with my two last FPGA designs, me
idiot --
i did connect the on board LED one side to the GND!! it could have
been
possible i did even think about it, hm maybe i did, but did not
implement it. Well the
routing was complicated so connecting to gnd was easier

never again, when adding a LED to the FPGA board will always connect
it between
2 IO's then the same LED can be used as input or output device :)


using a LED as sensor when polarity can not be changed doesnt work at
all,
or well, i tried once the pin oscillator without changing polarity and
got no
light sensing (or almost none)


Antti

Antti wrote:
> never again, when adding a LED to the FPGA board will always connect it between
> 2 IO's then the same LED can be used as input or output device :)
> using a LED as sensor when polarity can not be changed doesnt work at all,
> or well, i tried once the pin oscillator without changing polarity and got no
> light sensing (or almost none)
hmmm cool, it gives me new ideas :-)

> Antti
yg

-- 
http://ygdes.com / http://yasep.org

On Apr 27, 3:09=A0am, whygee <why...@yg.yg> wrote:
> Antti wrote:
> > never again, when adding a LED to the FPGA board will always connect it=
 between
> > 2 IO's then the same LED can be used as input or output device :)
> > using a LED as sensor when polarity can not be changed doesnt work at a=
ll,
> > or well, i tried once the pin oscillator without changing polarity and =
got no
> > light sensing (or almost none)
>
> hmmm cool, it gives me new ideas :-)
>
> > Antti
>
> yg
>
> --http://ygdes.com/http://yasep.org

didi or altera?

I have tried both methods with FPGA, but not used in products yet

Antti

>>A while ago i did some research related to capacitive touch sensing,
and was really surprised to see that this function is offered by
Altera as ready made solution.

Hi Antti -
Altera recently released a webcast on capacitive touch sensing that
may be useful for your project:
http://www.altera.com/education/webcasts/all/wc-2009-max-ii-z-multi-touch-screen.html
It talks about upgrading resistive touch screens to multi-touch
screens, using MAX IIZ CPLDs and IP functions.
Kati