serin?

Hward

Trying to learn how to use serin,·· I have a little vb program writen that is just sending out a number when some thing is clicked.· Right now I am just trying to recieve the serial data on my bs2 and debug it but am not having any luck really·· I know its hooked up right.·· I have gotten it to work with this code.

loop:
SERIN 1,16572,[noparse][[/noparse]WAIT ("1")]
DEBUG "1"
PAUSE 500
DEBUG CLS
GOTO loop


But I don't want it to really wait just debugs what ever number comes in

·

Tom Walker

You're close...but you need to tell the SERIN command what to do with the data that it "sees" on the serial line. You don't need the WAIT, but you do need a variable to put the data into. Have another look at the SERIN command reference. This is not a cop-out, but I find that it "sticks" better when you look at the reference.

Once you have the data in a variable (defined to be the right size, of course), you can display it with the DEBUG command. Right now, you are just displaying the literal "1", waiting for half of a second, clearing the screen and repeating the process.

Hope this helps.

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Hward

this seems to be working······· anyone see any problems with it

serData·· VAR··· Word
loop:
SERIN 1,16572,[noparse][[/noparse]serData]
IF serData = "1" THEN MoveUp
IF serData = "2" THEN MoveDown
IF serData = "3" THEN MoveRight
IF serData = "4" THEN MoveLeft
GOTO loop

Jon Williams

There is a *problem* in that you're using "loop" as a label and that is a PBASIC 2.5 keyword.· Here's an updated version that uses PBASIC 2.5 syntax and is a little cleaner, and does error trapping:

Main:
· DO
··· DO
···· ·SERIN Sin, Baud, [noparse][[/noparse]cmd]
···· ·LOOKDOWN cmd, [noparse][[/noparse]"1234"], cmd
····LOOP UNTIL (cmd <= 3)
··· ON cmd GOSUB Move_Up, Move_Dn, Move_Rt, Move_Lf
· LOOP

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Jon Williams
Applications Engineer, Parallax