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Re: GPIO hardware with good support?
Am 19.08.2009 um 12:39 schrieb Toru Nishimura:
Emmanuel Dreyfus asked;
I would like to add a few GPIO pins to a machine that has none for
The possible extensions are SMB or USB. So I am looking for a SMB to
GPIO or USB to GPIO adapter that works nicely on NetBSD. Someone has
some harware to recommand?
Two possiblities come into my mind;
case 1. USB<>GPIO
case 2. I2C<>GPIO "IO expander"
For case 1 instance, I would suggest handy USB products like;
I have no specific product info of I2C IO expander this moment.
Actually a chip for case 2 exists, I even wrote a BSD driver for it
and have it in use @work. If it's of interest I will dig up the
- Marc Balmer
Toru Nishimura / ALKYL Technology
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