[sdiy] My latest project

[Jerry Gray-Eskue]

I have used this approach a lot, especially when I do not have a ICE for the
target.

I am curious, why did you add these instead of supplying the C primitives?
No access to the C library source?

void U1putc(char ch)

void U1printstring( char *str)

int U1getc(void)

-Jerry

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of Eric Brombaugh
Sent: Tuesday, February 16, 2010 8:24 AM
To: Tom Wiltshire
Cc: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] My latest project



On Feb 16, 2010, at 1:31 AM, Tom Wiltshire wrote:

>
> At the moment my ability to make nice sounds with it is considerably
hampered by it having no envelopes, keyboard, or control panel of any sort.
This makes it pretty much unplayable. My recent questions about an LCD
display were in connection with me trying to make a all-purpose
Xpander-style test interface with a couple of 2x40 displays and eight
encoders. This would give me a simple way to edit any number of parameters
in a synth whilst testing. If I added MIDI IN to it, I could even play a
tune. Well, maybe not a 'tune'...

User Interface issues during prototype phase are a nuisance. One thing I've
been doing recently that seems to work quite nicely and doesn't require a
lot of hardware is to use the dsPIC UART to talk to a terminal emulator on
my PC. I've built a simple command interpreter that lets me get / set
hardware values. For your application this might even carry over to the
final application as one way to control the voice cards.

If you're interested I've got some recent code up here:

http://members.cox.net/ebrombaugh1/synth/dsPIC_fpga/fpga1.zip

which might have some useful tidbits in it.

Eric


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