Multiple serial ports on propeller?

Whelzorn

I'm trying to gather data from a device on a serial port, so I use FullDuplexSerialExtended.
Then I need to have the propeller alter that data, then send it out a different serial port to my computer. but in my code I've got the object definition (SER : "FullDuplexSerialExtended") but for obvious reasons I can't do a SER.start(1, 2, %0000, 115200) and a SER.start(3, 4, %0000, 115200), because then I can't select which port I want to read to/write from (and it probably wouldn't work anyway).
So how do I set up two separate serial ports using the same serial object?
thanks, Justin

deSilva

You do it the same way as instantiating any two objects:

ser[noparse][[/noparse] 2 ]: "FullDuplexSerialExtended"

or

SIN: "FullDuplexSerialExtended"
SOUT: "FullDuplexSerialExtended"

Make sure the driver IS written for multiple instantiation (DAT section conformity) There is a tendency nowadays to frown upon this and request "singletons"....

Post Edited (deSilva) : 10/31/2007 12:28:02 AM GMT

Mike Green

To do the start:

ser[noparse][[/noparse] 0 ].start(1,2,%0000,115200)
ser[noparse][[/noparse] 1 ].start(3,4,%0000,115200)

Similarly, you reference all the methods with ser[noparse][[/noparse] 0 ]. or ser[noparse][[/noparse] 1 ].

parts-man73

This discussion gives me an idea. I assume the above mentioned method will work with most any object? Even perhaps VGA?

I thought about attaching 2 VGA monitors to 1 Propeller, and create some simple demo, like a bouncing ball that travels from screen to screen.

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Brian

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Mike Green

Yes, you can have multiples of most objects including the TV and VGA drivers. The only caution with these is that the screen buffers take a lot of memory, but I've used the TV text and VGA text drivers simultaneously with the TV used for debugging, works great!

deSilva

This is the main and only reason for this idiotic duplication of the video control block.

To my greatest chagrain many persons here take it for granted that you define a dozen VAR cells and make a copy of the DAT... nevertouch working code... This was the first thing deSilva removed from his drivers ... Sigh...

Oldbitcollector (Jeff)

Hey that would make some interesting multiplayer stuff...

How about using the mouse/keyboard connections for two keyboards. (it's the same circuit) and
two copies of the composite video driver (one for each monitor) for a little head-to-head gaming
from one prop. I wonder if after all that one would have enough resources for a game of battleship?

(Need more hours in the day....)

Oldbitcollector

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Buttons . . . check. Dials . . . check. Switches . . . check. Little colored lights . . . check.

— Calvin, of 'Calvin and Hobbes.

Whelzorn

Hey thanks guys, this worked out great. I didn't want to have to re-type all of the instances where I used ser.tx/rx, so I just put a ser2 : "fullDuplexSerialExtended" up there with the other one instead of using ser [noparse][[/noparse] 2 ]. but this is great to know, because I wasn't quite sure what to search for, even if the search function worked [noparse];)[/noparse]