arduino/esp8266
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make random more random

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This commit is contained in:
Markus Sattler 2016-01-29 13:17:10 +01:00
parent b39146d9c3
commit bf067f718a
1 changed files with 3 additions and 2 deletions
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5
cores/esp8266/WMath.cpp
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@ -26,10 +26,11 @@
extern "C" { extern "C" {
#include <stdlib.h> #include <stdlib.h>
} }
#include "esp8266_peri.h"
void randomSeed(unsigned long seed) { void randomSeed(unsigned long seed) {
if(seed != 0) { if(seed != 0) {
srand(seed); srand((seed ^ RANDOM_REG32));
} }
} }
@ -37,7 +38,7 @@ long random(long howbig) {
if(howbig == 0) { if(howbig == 0) {
return 0; return 0;
} }
return rand() % howbig; return (rand() ^ RANDOM_REG32) % howbig;
} }
long random(long howsmall, long howbig) { long random(long howsmall, long howbig) {