RANDOM - always the same result

[flotulopex]

Hello,

I'm doing something so obviously wrong, I can't see the tree in the forest anymore.

rvalue VAR WORD
random rvalue
R_V0 = (RValue//4) + 1 ' Convert it to range 1-4
if R_V0 = 1 then high led1
if R_V0 = 2 then high led2
if R_V0 = 3 then high led3
if R_V0 = 4 then high led4

The code above will always show "led3".

What's wrong here?

[Acetronics2]

Hi,Flotul

1) Read carefully the manual : there must be a SEED for the random function ... if always the same ... always the same result !!!

2) a little SEARCH would be THE THING to do ... good surprise for you !!!

Alain

[flotulopex]

Bonjour Alain,

Thanks...

I just found a way to make it work.

I changed my code and put R_V0 = rvalue & $03. But, to be honest, I don't understand why it works now.

Before opening this thread, I read lots of other threads about this subject. I've also been reading the Compiler's manual. I read this "Var is used both as the seed and to store the result" but my english is to poor and I don't understand the correct meaning of the word "seed" (graine - in french) here.

Could you explain this command in other words please?

[mister_e]

Kind of 'conjugaison du verbe voir => see, seed'.

Qu'est-ce qui a déja été vue, sortie, choisi, sélectionné.

[flotulopex]

j'ai l'air un peu c.. avec ma "graine"

a) So, when the statement is RANDOM RandomVar, the "output" value will be stored in RandomVar, no?

b) R_V0 = rvalue & $03 will keep only the 4 LSB of the result, no?

c) still don't understand why my code in post#1 doesn't work. Must I specify it is in a loop? It is and doesn't work.

[mister_e]

j'ai l'air un peu c.. avec ma "graine"

LMAO you don't want to know the meaning of the Quebec expression 'Graine'

a) So, when the statement is RANDOM RandomVar, the "output" value will be stored in RandomVar, no?

Indeed

b) R_V0 = rvalue & $03 will keep only the 4 LSB of the result, no?

Nope, 3=%00000011 so only the 2 LSBs

c) still don't understand why my code in post#1 doesn't work. Must I specify it is in a loop? It is and doesn't work.

I guess you should use something like
rvalue=R_V0 before using Random again...