Update to accomodate ShipModul Miniplex

[jprotzman]

The Shipmodul Miniplex now uses R and C to represent a message being received or sent. This update adds C to each PSMDST message so that the Miniplex will accept the message.

Example: $PSMDST,C,XX,YY,ZZ

[sbender9]

Is this message only used by the Shipmodule stuff? And what about people that haven't updated their firmware?

[jprotzman]

I just added a new commit that will keep the original and include the new version for the current ShipModul firmware. This should accommodate everyone.

[sbender9]

Do we know that it will ignore the wrong one? Just worried that it might do something strange.

[jprotzman]

I know the Miniplex will ignore the one that does not match its firmware but I cannot say if any other device would do the same. I would think yes since the structure puts an R or a C into the field that would normally be a two character hex value representing the ST datagram. Since R or C are are not represented as a two digit hex value then I would think it would reject the message.

Since I do not have any other devices that accept this message (I don't even know of other devices that would), I cannot test this.

The only definitive alternative would be to add a config setting for the Miniplex.

[tkurki]

Would it make sense to add a new autopilot type Raymarine Seatalk 1 AP (MiniPlex) here?