How to generate a random number on AT89C51 ?

[buts101]

Random Number

-->Random Number

I need to generate random number on at89c51 microcontroller i.e. for

the same input(+5) on same pin(P1.1)..i need to make random pin from

P0.0 to P0.7, high. Please help me with the coding either in .asm or

.C

Thank you.

 

[leomecma]

Re: Random Number

Use RANDOM Function of C rand() limiting the value between 0 until 7 like it.

#include <stdlib.h>

int t;
t = randon()%8; // Generate a random number between 0 -> 7
then you use ...

P0 |= (1 << t) ; // This set the desired BIT

Where P0 is P0OUT register ... it's just an example because I don't know this processor.

leomecma

 

[syrax]

Re: Random Number

you can test some code using the timer

 

[buts101]

Re: Random Number

hello syrax...
could u post timer coding in C...for getting the same above result (random pin high).
Thank you.

 

[ductrungvn]

Re: Random Number

Hi leomecma
I don't know use C codes in using 8051 microcontroller so how to generate random number using code in asm???
Thank you.