Using a Dout on Core1 to drive a Din on Core 2

[robinfawell]

Although this topic concerns my organ project it seems to have a general nature and I have addressed it to the Design Concepts section.

I have 2 independent cores both programmed in C and both sending Midi messages to a Sound Module.

Due to my need for Memorised Setup which is programmed in Core 1, I would like to control one Din on core 2.  I propose to use a push button and its related Din / Dout on Core 1. The Dout will have 2 functions; to drive an LED on the console and to connect to a DIN on Core 2.

Effectively this is the equivalent of a Push button on Core 2.

I cannot see any reason why this should not work, providing the correct hardware and software polarities are observed.

I realise that an opto_coupler could be used but is it really necessary?

I would welcome any comments.

Regards Robin

[stryd_one]

It'd probably work, but couldn't you send the commands via MIDI?

[moebius]

Hi.

Your proposed way is a brute-force one, but I can't see anything wrong with it. I assume You'll have core powered from same source (common ground is the key) and button push will toggle DOUT. (I'm assuming DOUTs fan_out isn't exceed, so it can drive led and one DIN input both)

And You don't need an optocoupler here.

[babble]

This isn't of course an universal core interconnection model 'cause the mode is asynchronous and DOUT and DIN aren't working from the same clock

[/babble]

Moebius

[robinfawell]

Thanks to both of you for your replies.

Re the Midi suggestion, at present there is no midi connection between the 2 cores . The Roland Sound module provides a merge function.  If it works, the "electrical" solution is the simplest.

I will report back on the outcome.

Regards Robin

[stryd_one]

I will report back on the outcome.

Please do :)

Although it's not been done before I think you'll have no problems.