Serial Communication (Parallax <-> PC)

eduardomorais · 2011-01-10 18:20

Hello friends!

I'm working on a project that uses USB communication between a computer and a board propeller parallax.
I need a method that receives bytes from the USB and performs some tasks in accordance with such received bytes.
As the size of the received words will be something "random", I have to develop a method that will read in SPIN indefinitely from USB only stopping when a stop condition, for example a character
'\ r', is introduced to it.
I tried to do that anyway. Could anyone tell me another way of doing or where I'm wrong, because is not working that way.

C

ratronic · 2011-01-10 20:57

eduardomorias - probably no one has answered this because it's hard to tell from your posted code what your trying to do. Next time copy and paste your code in between the code tags or post the spin file. I think this is what you were trying to do - try this

CON 
_clkmode = xtal1 + pll16x
_xinfreq = 5_000_000
NL = %00001101'= '\r' 
 
OBJ
PC: "FullDuplexSerial" 
 
VAR
byte teste
 
PUB Main
  dirA[16..23]~~              
  PC.start(31, 30, 0, 9_600)  
  lerserial
 
Pub lerserial
 
  Repeat until teste == nl
    teste := pc.rx
    case teste
      %01000001: !outA[16]     '65 A
      %01000010: !outA[17]     '66 B
      OTHER : !outa[16..17]

Serial Communication (Parallax <-> PC)

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