Re: Program Thymio II with buttons and an array (delay-problem?)

Thu, 22 Nov 2018 15:41:08 +0000

Hello,
I see several problems in your code.
First, you increment i2 and use it as an index the array go which is size 5, but you never check that i2 is not bigger than 5, so you will end up trying to write outside the array.
Second, you use a while loop in your event button.center, which means the robot executes only the code in the loop until i>5. i is also incremented inside the loop, and each line of code takes only a few milliseconds to execute, so what happens in your case is that the target of the motors is changed 5 times in a few milliseconds before the rest of the code is executed again, so you can only see the last command in the array being executed.

Program Thymio II with buttons and an array (delay-problem?)

Tue, 20 Nov 2018 07:30:51 +0000

Input example:

<
^
v
^
o

But the Thymio is just executing the last input, no matter hier I make use of the timer…

But my array doesn't work as expected. The robot should drive one command after the other, instead of just executing the last command in the array.

How do I have to fix it? http://www.ramsa.ma/UserProfile/tabid/42/userId/322104/Default.aspx

var go[5] = [0,0,0,0,0]
var j = 0
var i
var i2 = 0
var richtung

stop timer 0
timer.period[0] = 0
reset outputs

call sound.system(-1)
call leds.top(0,0,0)
call leds.bottom.left(0,0,0)
call leds.bottom.right(0,0,0)
call leds.circle(0,0,0,0,0,0,0,0)

onevent button.center
when button.center == 1 do
while i < 5 do
if go[i] == 0 then
call leds.circle(32,0,0,0,0,0,0,0)
motor.left.target = 300
motor.right.target = 300
elseif go[i] == 1 then
call leds.circle(0,0,32,0,0,0,0,0)
motor.left.target = 300
motor.right.target = 0
elseif go[i] == 2 then
call leds.circle(0,0,0,0,32,0,0,0)
motor.left.target = -300
motor.right.target = -300
#timer.period[0] = 1000
elseif go[i] == 3 then
call leds.circle(0,0,0,0,0,0,32,0)
motor.left.target = 0
motor.right.target = 300

end

i = i + 1
end
#emit pair_run 5
end

onevent button.forward
when button.forward == 1 do
richtung = 0
go[i2] = 0
i2 = i2 + 1
#emit pair_run 0
end

onevent button.right
when button.right == 1 do
richtung = 1
go[i2] = richtung
i2 = i2 + 1
end

onevent button.left
when button.left == 1 do
richtung = 3
go[i2] = richtung
i2 = i2 + 1
#emit pair_run 2
end

onevent button.backward
when button.backward == 1 do
richtung = 2
go[i2] = richtung
i2 = i2 + 1
#emit pair_run 3
end

onevent timer0
timer.period[0] = 0
motor.left.target = 0
motor.right.target = 0
call leds.bottom.left(32,0,0)
call leds.bottom.right(32,0,0)