Serial receiving with timeout

jnogues

Hi everybody,
Is possible received a string using Parallax Serial Terminal.spin object, with a timeout?

Regards,

Jaume Nogues
Barcelona
Spain

Dr_Acula

I've been using this serial object obex.parallax.com/objects/340/

It has 4 serial objects in one cog, but regarding timeouts, it has

PUB rxtime(port,ms) : rxbyte | t
'' Wait ms milliseconds for a byte to be received
'' returns -1 if no byte received, $00..$FF if byte
  t := cnt
  repeat until (rxbyte := rxcheck(port)) => 0 or (cnt - t) / (clkfreq / 1000) > ms

The object has a large buffer, so I prefer to poll to see if anything is in the buffer

PUB rxavail(port) : truefalse

'' Check if byte(s) available
'' returns true (-1) if bytes available
  if long[noparse][[/noparse]@rx_tail][noparse][[/noparse]port] <> long[noparse][[/noparse]@rx_head][noparse][[/noparse]port]
    truefalse:=-1
  else
    truefalse:=0

and then get a byte and then check again if anything is there.

It is faster than waiting for timeouts.

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