From: Bakul Shah <bakul@bitblocks.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] radio
Date: Thu, 8 May 2014 11:36:22 -0700 [thread overview]
Message-ID: <20140508183622.E368BB827@mail.bitblocks.com> (raw)
In-Reply-To: Your message of "Thu, 08 May 2014 18:58:31 BST." <275c3465707d98d4c1f88f81b40670fd@quintile.net>
On Thu, 08 May 2014 18:58:31 BST "Steve Simon" <steve@quintile.net> wrote:
> I have a hifiberry (http://www.hifiberry.com/) nicely minimalist,
> though no driver at present - I will await the GSOC project :-)
> I have some itron VFDs from work, 256 x 64 pixel. I like these as
> the visibility is excellent. The only annoyance is they have
> a parallel interface and I use up all the PI's GPIOs.
> I also need to interface a rotary encoder for the tuning knob which
> is also a pain - not complex enough to justify an FPGA, but a bit too
> much to poll when the PI is doing audio decode as well.
No need for polling. The BCM2835 can handle edge triggered
interrupts. Or you can use a PAL or CPLD.
> Thinking of adding a PIC or an AVR just for the encoder / VFD interface
> and talking i2c to it.
next prev parent reply other threads:[~2014-05-08 18:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-08 11:06 Steve Simon
2014-05-08 17:19 ` Bakul Shah
2014-05-08 17:58 ` Steve Simon
2014-05-08 18:36 ` Bakul Shah [this message]
2014-05-09 14:11 ` Krystian Lewandowski
2014-05-09 15:43 ` Skip Tavakkolian
2014-05-09 23:21 ` Bakul Shah
2014-05-10 11:35 ` Krystian Lewandowski
2014-05-08 18:51 ` Skip Tavakkolian
2014-05-08 19:04 ` Steve Simon
2014-05-08 20:07 ` Steven Stallion
2014-05-08 20:26 ` Skip Tavakkolian
2014-05-09 12:34 ` Steve Simon
2014-05-09 12:46 ` erik quanstrom
2014-05-09 12:54 ` lucio
2014-05-09 12:59 ` erik quanstrom
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