Receiving a string Serially

kt88seamp

The fullduplexserial object provides a means to transmit a string. How do you receive the string on the other end?

FDSER.str(string("Some Text"))

How do you read in the "Some Text" on the other end?

Post Edited (kt88seamp) : 6/28/2010 12:09:53 AM GMT

bill190

If on a PC, with a serial "Terminal"·program like Parallax Serial Terminal, Hyperterminal, Realterm, etc.

kt88seamp

I am using another propeller to receive the string.

kuroneko

What's wrong with simply reading the incoming characters (and displaying them)?

wjsteele

There are great examples in the Obex. Take a look at the Propeller Serial Terminal Demo and the GPS Demos.

They both show how to read from a serial input.

Bill

kt88seamp

I am not displaying them. I am doing string compare operations.

kuroneko

kt88seamp said...
I am not displaying them. I am doing string compare operations.

Well, then simply store them in a byte array. You might want to introduce some kind of End-Of-String character so that you receiver knows when to stop.

JonnyMac

Perhaps something like this:

pub rxstr(pntr) | c

  bytefill(pntr, 0, 32)

  repeat
    c := serial.rx
    if (c == 13) or (c == 0)
      quit
    else
      byte[noparse][[/noparse]pntr++] := c

This assumes you have a 32-character buffer (array of bytes) at the address indicated by pntr, and an object called serial that has an rx method (like FullDuplexSerial).

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Jon McPhalen
Hollywood, CA