From a4eec2ebc8010e3b014faf9800ab966cd81e3924 Mon Sep 17 00:00:00 2001
From: Marcus <marcus@deltalima.org>
Date: Sat, 13 Apr 2024 21:41:36 +0200
Subject: [PATCH] firmware WIP

---
 Arduino/CanGrow/CanGrow.ino | 172 ++++++++++++++++++++++--------------
 1 file changed, 107 insertions(+), 65 deletions(-)

diff --git a/Arduino/CanGrow/CanGrow.ino b/Arduino/CanGrow/CanGrow.ino
index ca4d952..bdfc28d 100644
--- a/Arduino/CanGrow/CanGrow.ino
+++ b/Arduino/CanGrow/CanGrow.ino
@@ -45,9 +45,11 @@ float valHumidity;
 bool configured;
 char WIFIssid[32];
 char WIFIpassword[64];
+//int WIFIssidsAvail;
 IPAddress WIFIip(192,168,4,20);
 IPAddress WIFInetmask(255,255,255,0);
 IPAddress WIFIgateway(192,168,4,254);
+IPAddress WIFIdns(0,0,0,0);
 
 // GrowName - contains the name of the grow/plant. Up to 32 byte
 char GrowName[32];
@@ -91,8 +93,14 @@ byte SoilmoistureLow;
  * WiFi
  */
  
-const char *APssid = "CanGrow-unconfigured";
-const char *APpass = "CanGrow";
+const char* APssid = "CanGrow-unconfigured";
+/*
+ * TODO - does not work atm. idk why. 
+ * const char* APpass = "CanGrow";
+const int APchannel = 6;
+const bool APhidden = false;
+* 
+*/
 
 
 /*
@@ -424,7 +432,7 @@ void wipeEEPROM() {
 
 
 bool loadEEPROM() {
-  
+  Serial.println(":: loading EEPROM ::");
   /*
    * configured
    * 
@@ -433,6 +441,8 @@ bool loadEEPROM() {
    * would be at the beginning - more a cosmetic thing
    */
   EEPROM.get(511, configured);
+  Serial.print("configured: ");
+  Serial.println(configured);
   
   // when configured is > 1 (it should == 1) then read EEPROM furher data
   if(configured > 0) {
@@ -452,6 +462,8 @@ bool loadEEPROM() {
     EEPROM.get(112, WIFInetmask);
     // read var WIFIgateway from address 128, 16 byte long  
     EEPROM.get(128, WIFIgateway);
+    // read var WIFIgateway from address 128, 16 byte long  
+    EEPROM.get(144, WIFIdns);
     
     /*
      * Grow data
@@ -466,16 +478,45 @@ bool loadEEPROM() {
     Serial.print("WIFIssid: ");
     Serial.println(WIFIssid);
     Serial.print("WIFIpassword: ");
-    Serial.println(WIFIpassword);    
+    Serial.println(WIFIpassword);
   }
-
-
-  Serial.print("configured: ");
-  Serial.println(configured);
+  Serial.println(":: EEPROM loaded ::");
   
   return(configured);
 }
 
+void wifiConnect() {
+    Serial.println(":: Connecting to WiFi ::");
+    Serial.print("SSID: ");
+    Serial.println(WIFIssid);
+
+    // Start WiFi connection
+    WiFi.begin(WIFIssid, WIFIpassword);
+    WiFi.config(WIFIip, WIFIdns, WIFIgateway);
+
+    // wait until WiFi connection is established
+    while (WiFi.status() != WL_CONNECTED) {
+      delay(500);
+      Serial.print(".");
+    }
+    Serial.println(" CONNECTED!");
+    Serial.print("IP: ");
+    Serial.println(WiFi.localIP());
+}
+
+void wifiAp() {
+    Serial.println(":: Creating Accesspoint ::");
+    
+    // configure WiFi Access Point
+    WiFi.softAPConfig(WIFIip, WIFIgateway, WIFInetmask);
+    // start Access Point
+    // TODO make AP with password - does not work atm. idk why. 
+    WiFi.softAP(APssid);
+    Serial.print("SSID: ");
+    Serial.println(APssid);
+    Serial.print("CanGrow IP address: ");
+    Serial.println(WiFi.softAPIP());
+}
 
 /*
  * Setup
@@ -554,42 +595,21 @@ void setup() {
    */
    
    
-  // load stored values from EEPROM
+  // load stored values from EEPROM and check what var configured is returned
   if(loadEEPROM()) {
-    Serial.print("Configuration found in EEPROM, connect to Wifi ");
-    Serial.println(WIFIssid);
-
-    // Start WiFi connection
-    WiFi.begin(WIFIssid, WIFIpassword);
-
-    // wait until WiFi connection is established
-    while (WiFi.status() != WL_CONNECTED) {
-      delay(500);
-      Serial.print(".");
-    }
-    Serial.println(" CONNECTED!");
-    Serial.print("IP: ");
-    Serial.println(WiFi.localIP());
+        
+    // connect to wifi
+    wifiConnect();
     
-    // use webhandlers for configured state
+    // use webhandler for configured state
     WebHandler_configured();
   
-  // no data found in EEPROM, setup Access Point
-  } else {
-    Serial.println("Creating Accesspoint");
-    Serial.print("SSID: ");
-    Serial.println(APssid);
-    Serial.print("Password: ");
-    Serial.println(APpass);
-    
-    // configure WiFi Access Point
-    WiFi.softAPConfig(WIFIip, WIFIgateway, WIFInetmask);
-    // start Access Point
-    WiFi.softAP(APssid, APpass);
-    Serial.print("CanGrow IP address: ");
-    Serial.println(WiFi.softAPIP());
-    
-    // use webhandlers for unconfigured state
+  // configured is 0, setup Access Point
+  } else {  
+
+    // start an wifi accesspoint
+    wifiAp();
+    // use webhandler for unconfigured state
     WebHandler_unconfigured();
   }
   
@@ -627,10 +647,20 @@ void loop() {
   }
 
 void WebHandler_unconfigured() {
-  webserver.on("/", HTTP_GET, WEBrootAP);
+  /*
+   * WebHandler_unconfigured()
+   * 
+   * Here all URL routings are defined, in unconfigured state
+   */
+  webserver.on("/", HTTP_GET, WEBrootUnconfigured);
 }
 
 void WebHandler_configured() {
+  /*
+   * WebHandler_unconfigured()
+   * 
+   * Here all URL routings are defined, in configured state
+   */
   webserver.on("/", HTTP_GET, WEBroot);
 }
   
@@ -640,6 +670,37 @@ void WebHandler_configured() {
  * 
  */
 
+void WEB404() {
+  String body = FPSTR(HTMLheader);
+  body += "404 - not found";
+  body += FPSTR(HTMLfooter);
+}
+
+void WEBrootUnconfigured() {
+  byte ssidsAvail = WiFi.scanNetworks();
+  String body = FPSTR(HTMLheader);
+  body += "<h1>unconfigured!</h1>";
+  body += "<h1>WiFi config</h1>";
+  body += "<form method='post' action='/wifiConfig/save'>";
+  body += "SSID: <input type='text' name='WIFIssid'><br>";
+  body += "Password: <input type='password' name='WIFIpassword'><br>";
+  body += "IP: <input type='text' name='WIFIip'><br>";
+  body += "Subnet mask: <input type='text' name='WIFInetmask'><br>";
+  body += "gateway: <input type='text' name='WIFIgateway'><br>";
+  body += "dns: <input type='text' name='WIFIdns'><br>";
+  body += "<input type='submit' value='Save'>";
+  body += "</form>";
+  body += "<p>Available WiFi <pre>";
+  for(int i = 0 ; i < ssidsAvail; i++) {
+    body += WiFi.SSID(ssidsAvail);
+    body += "\n";
+  }
+  body += "</pre></p>";
+  body += FPSTR(HTMLfooter);
+  
+  webserver.send(200, "text/html", body);
+} 
+
 void WEBroot() {
   
   String body = FPSTR(HTMLheader);
@@ -649,30 +710,6 @@ void WEBroot() {
   webserver.send(200, "text/html", body);
 }  
   
-void WEBrootAP() {
-  
-  String body = FPSTR(HTMLheader);
-  body += "<h1>unconfigured!</h1>";
-  body += "<h1>WiFi config</h1>";
-  body += "<form method='post' action='/wifiConfig/save'>";
-  body += "SSID: <input type='text' name='WIFIssid'><br>";
-  body += "Password: <input type='password' name='WIFIpassword'><br>";
-  body += "IP: <input type='text' name='WIFIip'><br>";
-  body += "Subnet mask: <input type='text' name='WIFInetmask'><br>";
-  body += "gateway: <input type='text' name='WIFIgateway'><br>";
-  body += "<input type='submit' value='Save'>";
-  body += "</form>";
-  body += FPSTR(HTMLfooter);
-  
-  webserver.send(200, "text/html", body);
-}    
-  
-
-void WEB404() {
-  String body = FPSTR(HTMLheader);
-  body += "404 - not found";
-  body += FPSTR(HTMLfooter);
-}
   
 /*
  * 
@@ -686,6 +723,7 @@ void POSTwifiConfig() {
   String WIFIip_new = webserver.arg("WIFIip");
   String WIFInetmask_new = webserver.arg("WIFInetmask");
   String WIFIgateway_new = webserver.arg("WIFIgateway");
+  String WIFIdns_new = webserver.arg("WIFIdns");
   
   WIFIssid_new.toCharArray(WIFIssid, 32);
   WIFIpassword_new.toCharArray(WIFIpassword, 64);
@@ -693,6 +731,7 @@ void POSTwifiConfig() {
   WIFIip.fromString(WIFIip_new);
   WIFInetmask.fromString(WIFInetmask_new);
   WIFIgateway.fromString(WIFIgateway_new);
+  WIFIdns.fromString(WIFIdns_new);
   
   configured = true;
     
@@ -701,6 +740,7 @@ void POSTwifiConfig() {
   EEPROM.put(96, WIFIip);
   EEPROM.put(112, WIFInetmask);
   EEPROM.put(128, WIFIgateway);
+  EEPROM.put(144, WIFIdns);
   EEPROM.put(511, configured);
   EEPROM.commit();
   
@@ -719,6 +759,8 @@ void POSTwifiConfig() {
   Serial.println(WIFInetmask_new);
   Serial.print("WIFIgateway: ");
   Serial.println(WIFIgateway_new);
+  Serial.print("WIFIdns: ");
+  Serial.println(WIFIdns_new);
   
   Serial.print("configured: ");
   Serial.println(configured);