From ac8fa77eb0eac67147216ec089c6945f88d5838d Mon Sep 17 00:00:00 2001
From: Klaus K Wilting <Klaus.K.Wilting@deutschebahn.com>
Date: Sat, 31 Mar 2018 23:22:43 +0200
Subject: [PATCH] srand init fixed

---
 src/main.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 0dbc02af..4afbff26 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -188,8 +188,7 @@ void wifi_sniffer_loop(void * pvParameters) {
 
     configASSERT( ( ( uint32_t ) pvParameters ) == 1 ); // FreeRTOS check
     uint8_t channel = 1;
-    srand((uint32_t) temperatureRead()); // use chip temperature for pseudorandom generator init
-    int nloop=0, lorawait=0, salt=rand() % 256; // random int between 0 and 255 used for salting MAC hashes
+    int nloop=0, lorawait=0;
     ESP_LOGI(TAG, "Scan initialized, salt value: %i", salt);
 
   	while (true) {
@@ -385,6 +384,10 @@ void setup() {
     antenna_init();
 #endif
 
+    // initialize pseudorandom generator and salt value
+    srand((uint32_t) temperatureRead()); // use chip temperature for pseudorandom generator init
+    salt = rand() % 256; // get new random int between 0 and 255 for salting MAC hashes
+
     // initialize display
     init_display(PROGNAME, PROGVERSION);     
     u8x8.setPowerSave(!cfg.screenon); // set display off if disabled