From 4d6bac193a1464f3159f2c45b2309c538a6078a6 Mon Sep 17 00:00:00 2001
From: Luc <luc@tech-hunters.com>
Date: Fri, 21 Jun 2019 18:43:49 +0200
Subject: [PATCH] Fix open network connection (no password)

---
 esp3d/command.cpp  | 2 +-
 esp3d/config.cpp   | 9 ++++++++-
 esp3d/config.h     | 2 +-
 esp3d/wificonf.cpp | 6 +++++-
 4 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/esp3d/command.cpp b/esp3d/command.cpp
index bacedfb4..99901092 100644
--- a/esp3d/command.cpp
+++ b/esp3d/command.cpp
@@ -1357,7 +1357,7 @@ bool COMMAND::execute_command (int cmd, String cmd_params, tpipe output, level_a
         if (! (styp == "B" || styp == "S" || styp == "A" || styp == "I" || styp == "F") ) {
             response = false;
         }
-        if (sval.length() == 0) {
+        if ((sval.length() == 0) && !((pos==EP_AP_PASSWORD) || (pos==EP_STA_PASSWORD))){
             response = false;
         }
 
diff --git a/esp3d/config.cpp b/esp3d/config.cpp
index 4ee44399..f9ef7558 100644
--- a/esp3d/config.cpp
+++ b/esp3d/config.cpp
@@ -692,10 +692,17 @@ bool CONFIG::write_string (int pos, const char * byte_buffer)
         maxsize = EEPROM_SIZE;
         break;
     }
-    if ( (size_buffer == 0 ) ||  pos + size_buffer + 1 > EEPROM_SIZE || size_buffer > maxsize  || byte_buffer == NULL) {
+    if ( pos + size_buffer + 1 > EEPROM_SIZE || size_buffer > maxsize  ) {
         LOG ("Error write string\r\n")
         return false;
     }
+    
+    if (!((pos == EP_STA_PASSWORD) || (pos == EP_AP_PASSWORD))) {
+       if((size_buffer == 0 ) || (byte_buffer == NULL )){
+            LOG ("Error write string\r\n")
+            return false;
+       } 
+    }
     //copy the value(s)
     EEPROM.begin (EEPROM_SIZE);
     for (int i = 0; i < size_buffer; i++) {
diff --git a/esp3d/config.h b/esp3d/config.h
index 8dbed12c..290d7a20 100644
--- a/esp3d/config.h
+++ b/esp3d/config.h
@@ -19,7 +19,7 @@
 */
 
 //version and sources location
-#define FW_VERSION "2.1.0.b28"
+#define FW_VERSION "2.1.0.b29"
 #define REPOSITORY "https://github.com/luc-github/ESP3D"
 
 //Customize ESP3D ////////////////////////////////////////////////////////////////////////
diff --git a/esp3d/wificonf.cpp b/esp3d/wificonf.cpp
index c6a10ce2..e97cee9a 100644
--- a/esp3d/wificonf.cpp
+++ b/esp3d/wificonf.cpp
@@ -467,7 +467,11 @@ bool WIFI_CONFIG::Setup (bool force_ap)
 #else
         esp_wifi_set_protocol (ESP_IF_WIFI_STA, bflag);
 #endif
-        WiFi.begin (sbuf, pwd);
+        if (strlen(pwd) > 0){
+            WiFi.begin (sbuf, pwd);
+        } else {
+            WiFi.begin (sbuf);
+        }
         delay (100);
 #ifdef ARDUINO_ARCH_ESP8266
 		WiFi.setSleepMode ( (WiFiSleepType_t) sleep_mode);