working clock with 3 displays

src/disp.h

@@ -27,7 +27,7 @@ void fadeIn(int max, int time, LedControl lc);
 // source: https://www.best-microcontroller-projects.com/max7219.html
 // For LedControl, I have to mirror each character.
 PROGMEM const unsigned char CH[] = {
-3, 8, B0000000, B0000000, B0000000, B0000000, B0000000, // space
+2, 8, B0000000, B0000000, B0000000, B0000000, B0000000, // space
 1, 8, B1011111, B0000000, B0000000, B0000000, B0000000, // !
 3, 8, B0000011, B0000000, B0000011, B0000000, B0000000, // "
 5, 8, B0010100, B0111110, B0010100, B0111110, B0010100, // #

src/main.cpp

@@ -46,13 +46,23 @@ DateTime now;
 #define MAX_CS D6
 #define MAX_DIN D7
 
-LedControl lc = LedControl(MAX_DIN, MAX_CLK, MAX_CS, 2);
+LedControl lc = LedControl(MAX_DIN, MAX_CLK, MAX_CS, 3);
 
 /* we always wait a bit between updates of the display */
 
 unsigned long delaytime = 500;
 
+char str[24];
+
 void configModeCallback(WiFiManager *myWiFiManager);
+ESP8266WebServer server(80);
+
+void handleRoot(); // function prototypes for HTTP handlers
+void handleNotFound();
+void handleBody();
+void reconnect();
+void setTime(char* timeStr);
+String SendHTML();
 
 void setup()
 {
@@ -60,16 +70,9 @@ void setup()
   //WiFiManager
   //Local intialization. Once its business is done, there is no need to keep it around
   WiFiManager wifiManager;
-  //reset settings - for testing
-  //wifiManager.resetSettings();
-
   //set callback that gets called when connecting to previous WiFi fails, and enters Access Point mode
-
-  /*
   wifiManager.setAPCallback(configModeCallback);
 
-  
-
   //fetches ssid and pass and tries to connect
   //if it does not connect it starts an access point with the specified name
   //here  "AutoConnectAP"
@@ -82,30 +85,22 @@ void setup()
     delay(1000);
   }
 
-  
-
   //if you get here you have connected to the WiFi
   Serial.println("connected...yeey :)");
-  */
+  
+  server.on("/", handleRoot);
+  server.on("/set_time", handleBody);
+  server.onNotFound(handleNotFound);
+
+  server.begin();
+  Serial.println("HTTP server started");
+  
 
   /* The MAX72XX is in power-saving mode on startup, we have to do a wakeup call */
-
-  lc.shutdown(0, false);
-  lc.shutdown(1, false);
-
-  int devices = lc.getDeviceCount();
-  Serial.print("devices: ");
-  Serial.println(devices, 10);
-
-  /* Set the brightness to a medium values */
-
-  lc.setIntensity(0, 15);
-
-  lc.clearDisplay(0);
-
-  lc.setIntensity(1, 15);
-
-  lc.clearDisplay(1);
+  for (int i=0;i<lc.getDeviceCount();i++) {
+    lc.shutdown(i,false);
+    lc.setIntensity(i,8);
+  }
 
   for (int i=0;i<8;i++) {
     lc.setDigit(1,i,8,true);
@@ -174,58 +169,78 @@ void printNumber(int v)
 void loop()
 {
 
-  DateTime now = rtc.now();
-
-  Serial.print(now.year(), DEC);
-  Serial.print('/');
-  Serial.print(now.month(), DEC);
-  Serial.print('/');
-  Serial.print(now.day(), DEC);
-  Serial.print(" (");
-  Serial.print(") ");
-  Serial.print(now.hour(), DEC);
-  Serial.print(':');
-  Serial.print(now.minute(), DEC);
-  Serial.print(':');
-  Serial.print(now.second(), DEC);
-  Serial.println();
-  Serial.println();
-  //printStringWithShift("TEST", 150, lc);
-  lc.setIntensity(0, 15);
-
-
-  char str[24];
-  sprintf(str, "%02d%02d", now.hour(), now.minute());
+  server.handleClient();
+  setTime(str);
   printString(str, lc);
-  delay(800);
-  /*
-  int dl = 500;
-  printChar('1',lc);
-  delay(dl);
-  printChar('2',lc);
-  delay(dl);
-  printChar('3',lc);
-  delay(dl);
-  printChar('4',lc);
-  delay(dl);
-  printChar('5',lc);
-  delay(dl);
-  printChar('6',lc);
-  delay(dl);
-  printChar('7',lc);
-  delay(dl);
-  printChar('8',lc);
-  delay(dl);
-  printChar('9',lc);
-  delay(dl);
-  printChar('0',lc);
-  delay(dl);
-*/
-  /*
-  lc.setDigit(0,0,3,false);
-  lc.setDigit(0,1,2,false);
-  lc.setDigit(0,2,1,false);
-  lc.setDigit(0,3,0,false);
-*/
-  //delay(1000);
+}
+
+void setTime(char* timeStr) {
+  DateTime now = rtc.now();
+  sprintf(timeStr, "%02d:%02d", now.hour(), now.minute());
+}
+
+
+void handleRoot()
+{
+  server.send(200, "text/html", SendHTML());
+}
+
+void handleBody() { //Handler for the body path
+ 
+      if (server.hasArg("hours")== false || server.hasArg("minutes")==false){ //Check if body received
+ 
+            server.send(200, "text/plain", "Body not received");
+            return;
+ 
+      }
+
+      uint8_t hours = atoi(server.arg("hours").c_str());
+      uint8_t minutes = atoi(server.arg("minutes").c_str());
+
+      DateTime now = rtc.now();
+      rtc.adjust(DateTime(2021, 9, 17, hours, minutes, 0)); 
+
+      server.send(200, "text/html", SendHTML());
+
+
+}
+
+void handleNotFound()
+{
+  server.send(404, "text/plain", "Not found");
+}
+
+String SendHTML()
+{
+  setTime(str);
+  String ptr = "<!DOCTYPE html> <html>\n";
+  ptr += "<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, user-scalable=no\">\n";
+  ptr += "<title>TooManySevenSegmentsClock</title>\n";
+  ptr += "<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n";
+  ptr += "body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;}\n";
+  ptr += "p {font-size: 24px;color: #444444;margin-bottom: 10px;}\n";
+  ptr += "</style>\n";
+  ptr += "</head>\n";
+  ptr += "<body>\n";
+  ptr += "<div id=\"webpage\">\n";
+  ptr += "<h1>TooManySevenSegmentsClock</h1>\n";
+
+  ptr += "<p>Time: ";
+  ptr += "</p>";
+
+ ptr += "<form action=\"/set_time\" method=\"post\">";
+ ptr += "  <input type=\"number\" min=\"0\" max=\"23\" id=\"hours\" value=\"";
+ ptr += (int)rtc.now().hour();
+ ptr += "\" name=\"hours\"><br><br>";
+ ptr += "  <input type=\"number\" min=\"0\" max=\"59\" id=\"minutes\" value=\"";
+ ptr += (int)rtc.now().minute();
+ ptr += "\" name=\"minutes\"><br><br>";
+ ptr += "  <input type=\"submit\" value=\"Submit\">";
+ ptr += "</form> ";
+
+
+  ptr += "</div>\n";
+  ptr += "</body>\n";
+  ptr += "</html>\n";
+  return ptr;
 }