programming
 

how does one go about changing forward to reverse in the edu robot ? Here is the code:

if rc_sw7 = 0 then skipOption7
p1_wheel = (((p1_wheel*154)/254)+100) max 254 'adjust wheel to 154-254
if drive_R < 127 then drive_R_reverse: 'is the right drive forward
drive_R = (drive_R - 127) min 0 'subract 127 to get the forward value
drive_R = (drive_R * p1_wheel)/254 'multiply by the wheel percentage
drive_R = (drive_R + 127) max 254 'add 127 back for proper output
goto drive_R_done: 'exit the drive right section
drive_R_reverse: 'the right drive is reverse
drive_R = (127 - drive_R) min 0 'invert drive-R to get a forward value
drive_R = (drive_R * p1_wheel)/254 'multiply by the wheel percentage
drive_R = (127 - drive_R) min 0 'invert drive_R back to normal
drive_R_done: 'drive_R section complete

if drive_L < 127 then drive_L_reverse: 'is the left drive forward
drive_L = (drive_L - 127) min 0 'subract 127 to get the forward value
drive_L = (drive_L * p1_wheel)/254 'multiply by the wheel percentage
drive_L = (drive_L + 127) max 254 'add 127 back for proper output
goto drive_L_done: 'exit the left right section
drive_L_reverse: 'the left drive is reverse
drive_L = (127 - drive_L) min 0 'invert drive-L to get a forward value
drive_L = (drive_L * p1_wheel)/254 'multiply by the wheel percentage
drive_L = (127 - drive_L) min 0 'invert drive_R back to normal
drive_L_done: 'drive_L section complete
skipOption7:

we changed the less-than signs to greater-than and still nothing happened.
Any ideas?

I think you're looking at the wrong chunk of code. This section (Option7) deals with the steering sensitivity. Option 6 is the one which deals with reversing the driving direction. To enable it, put a jumper on sw6.