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--- en:iot-open:remotelab:sut:generalpurpose2:u2 [2019/08/04 13:21] – pczekalski
+++ en:iot-open:remotelab:sut:generalpurpose2:u2 [2020/07/20 09:00] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 === Prerequisites ===
-You need to know how to handle 4×20 characters LCD screen. In case of doubt re-work on scenarios B1 and B2.\\ <fc #ff0000>Warning: In no case should you give your AP the internal.IOT SSID name! You will mess up the laboratory environment and block other users from accessing network infrastructure. We consider this behaviour as hacking and it will be penalized under legal jurisdiction!</fc>
+You need to know how to handle 4×20 characters LCD screen. In case of doubt re-work on scenarios B1 and B2.\\ <fc #ff0000>Warning: In no case should you give your AP the ''internal.IOT'' SSID name! You will mess up the laboratory environment and block other users from accessing network infrastructure. We consider this behaviour as hacking and it will be penalized under legal jurisdiction!</fc>
-<note warning>In no case give your AP the internal.IOT SSID! You will mess up the laboratory environment and block other users from accessing network infrastructure. We consider this behaviour as hacking and it will be penalized under legal jurisdiction!</note>
+<note warning>In no case give your AP the ''internal.IOT'' SSID! You will mess up the laboratory environment and block other users from accessing network infrastructure. We consider this behaviour as hacking and it will be penalized under legal jurisdiction!</note>
 To fully experience this scenario, you need to book another node (one of 1,2,3 or 4), to let the other node act as your networking client. You can use scenario U1 for this purpose but mind to update network SSID and passphrase in your code, to let it connect to your server. <note tip>Students physically present in the SUT IoT laboratory room 320 may use their own devices like laptops or mobile phones to connect to your AP.</note>
@@ Line 24: / Line 24: @@
 <code c>
 #include <Arduino.h>
-#include <ittiot.h>
 #include <ESP8266WiFi.h>
 #include <LiquidCrystal_I2C.h>
@@ Line 30: / Line 29: @@
 </code>
 == Step 2 ==
-Give it some definitions as identifiers for cleaner code:
+Give it some definitions as identifiers for cleaner code, remember to change ssid name to yours!
 <code c>
-#define wifi_ssid_ap n"myESPAP" //give it some unique name
+#define wifi_ssid_ap put_your_unique_id_here //give it some unique name-change here
 #define wifi_password_ap "1234567890"
 </code>
-<note important>Never use ''internal.IOT'' as your SSID name ''wifi_ssid_ap '' - you will overlap existing network infrastructure and we consider it as hacking that is subject to jurisdiction! Your account will be imediatelly banned!</note>
+<note warning>Never use ''internal.IOT'' as your SSID name ''wifi_ssid_ap'' - you will overlap existing network infrastructure and we consider it as hacking that is subject to jurisdiction! Your account will be imediatelly banned!</note>
 == Step 3 ==
 Print some information about starting software WiFi AP, configure network interface as a WiFi AP and give it a try to start:
 <code c>
+...
+  delay(10);
+...
   WiFi.mode(WIFI_AP);
-  boolean result = WiFi.softAP("ESPsoftAP_01", "pass-to-soft-AP");
+  delay(100);
+  boolean result = WiFi.softAP(wifi_ssid_ap, wifi_password_ap);
   if(result == true)
   {
-    Serial.println("Ready");
+... //Announce success, print status, SSID and passphrase to the LCD
   }
   else
   {
-    Serial.println("Failed!");
+... //Announce failure. Print it on LCD
   }
+...
 </code>
-== Step n ==
+== Step 4 ==
-//Describe activities done in Step n.//
+Implement in the ''loop()'' an information about number of connected clients, i.e. like this:
+<code c>
+...
+void loop()
+{
+  lcd.setCursor(0,3);
+  sprintf(buffer, "Stations: %d", WiFi.softAPgetStationNum());
+  lcd.print(buffer);
+  delay(3000);
+}
+...
+</code>
 === Result validation ===
-Check your AP is active on LCD. If so, compile U1 scenario on another node(s), mind to update SSID and passphrase then observe if connected clients counter grows.
+Check your AP is active on LCD eventually observe failure. If works OK, compile U1 scenario on another node(s), mind to update SSID and passphrase in the U1 source code then observe if connected clients counter increases.
 === FAQ ===
 Do I need to use WiFi.mode(WIFI_AP);?: Yes, please do. Theoretically, if consecutive compilations use AP (software server) mode of the ESP8266 wifi interface, your code may work without it. However, you never know if the previous user used STA or AP (or both). Your code may fail then if not explicitly stated!

en/iot-open/remotelab/sut/generalpurpose2/u2.1564924895.txt.gz · Last modified: 2020/07/20 09:00 (external edit)