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BS22

Hello.

Post Edited (BS22) : 7/20/2005 6:05:23 PM GMT

Philip Gamblin

I'm not sure I understand what knind of help you need. However, there are 2 GOSUBs without labels, Gosub Motors and Gosub Sensors. I cannot
locate either Sensors or Motors.

Bruce Bates

BS22 -

It appears to me that what you have offered as "part of the source code" may be a merging of multiple programs, which when taken together, do not work. The reason I say that may be found below in this program that I downloaded from the Lynxmotion web site. It looks remarkably similar to part of the program in your posting:

' Program LINETRK.BS2
' Simple Line Tracking
x var byte
y var byte
left var byte
right var byte
lstop con 150
rstop con 150
left = lstop
right = rstop
lmax con lstop + 10
rmax con rstop + 10
lmin con lstop - 10
rmin con rstop - 10

start:
if in15 = 1 then skip1
left = lmax
right = rmax
gosub p_out
skip1:
if in14 = 1 then skip2
left = lmax
right = rmin
gosub p_out
skip2:
if in13 = 1 then skip3
left = lmin
right = rmax
gosub p_out
skip3:
gosub p_out
goto start

p_out:
pulsout 0, (left * 5)
pulsout 1, (right * 5)
pause 20
return

This may have originally been a Parallax Demsonstration program, I really couldn't say. I've no idea where the other parts of your program came from, but that code (above) will provide a simple line tracking function, if the wiring of the motors and sensors matches the program requirements. Although I have no method to actually test it, I suspect it works as is.

That being offered, let's see if we can go from here.

Regards,

Bruce Bates

Philip Gamblin

GOSUB is a command look it up in the PBasic help in the latest version of the Basic Stamp editor. Briefly GOSUB means GO to a SUBroutine ,that you have written and placed in your program, and execute that code. GOSUB functions with the RETURN command. I suggest you study both of them in the help section. Things will start to make more sense.