This is a simple program, I think this program will show delays as it is very simple and the case statement will need to be changed according to the light at the moment of testing.

main:
readadc 1, b1
readadc 2, b2

select case b1
case 66 to 258
low 2
high 1

case 0 to 65 ; light sensing
high 2
low 1
end select

select case b2
case 66 to 258 ; no light sensing
low 4
high 3

case 0 to 65
high 4
low 3
end select

debug b1
debug b2
goto main