There are no Atom Pro 28M or 40M pinouts from Basic Micro yet, though they
have placeholders for the data sheets and the port assignments are shown in
the 28M schematics. A Renasas 3664 only has 4 IRQs and the 24M already
brings out 3 of them, and the fourth is used for the serial port TX signal.
To reduce input count requirement, what about making the mode selectable?
Program a port IO expander to set the modes, which toggles analog switches
to toggle the modes. If we want to make this compatible across programs,
now is the time to do it before the hardware is designed.
John Loffink
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.comThe Wavemakers Synthesizer Web Site
http://www.wavemakers-synth.com > -----Original Message-----
> From: ComputerVoltageSources@yahoogroups.com
> [mailto:ComputerVoltageSources@yahoogroups.com] On Behalf Of djbrow54
>
> Just to not mix multiple themes in messages ...
>
> Consider the need to detect narrow triggers. I started to look into
> this with my PSIM but none of the I/O pin interrupts are on external
> connectors. Having an edge or level interrupt would be very useful to
> detect triggers. In several of my programs I resort to monitoring
> changes in CV and, of course, gate signals to determine if there
> should have been a trigger. It would be real nice to have a way to
> capture the trigger directly.
>
> If you can't do this via interrupts, then I'd consider at least one
> edge capture & reset circuit for an external trigger input. I do
> think you can do it with interrupts. Let's hope that some of the 4
> additional pins on the AtomPro28 have external level or edge
> interrupts.
>
> Dave
>