Random…. More like a scripted Sequence !!!

[andybarrett1]

Further to this thread...

Although using :-

adcin ch,myword
random myword

I am using the same ADC port to create 2 random numbers....:-

adcin 4,myword1
random myword1

adcin 4,myword2
random myword2

Altough the sequence is random..... I am getting repeats (the two myword results are the same)....!

Is it doable to multiply/ divide/ add the myword by a number to change iton one of the words:-

adcin 4,myword1
myword1=myword1*7 ' (myword2=myword2*5 for second one)
random myword1

I have tried the above and differing variables of it ..... But I still get the repeating outputs. Channel 4 is the only ADC channel spare enough to be doing nothing.

Thank you again for reading. Hope it makes sense

Andy

[pedja089]

If you have some user input on pic, you can use that for seed value by measuring time between button press and release. But again RANDOM just use some math and probably after some time repeat result.
For dice I used this code:
Main:
For i = 1 to 6
If button=pressed Then GoSub ShowResult
Next i
GOTO Main
That is closest to random as you can get it. Result depending only on user button press. Variable will change value about 200 000 times in one second, so there is no way to repeat sequence...

[HenrikOlsson]

Hi,
If the ADC aproach isn't working then using one of the PICs timers in freerunning mode to provide the seed might do it. For this to work the execution of time between each instance of the random instruction must not be constant.

/Henrik.