Add diagnosis module via HTTP.

.gitignore

@@ -65,4 +65,15 @@ log.txt
 modules.order
 Module.symvers
 Mkfile.old
-dkms.conf
+dkms.conf
+
+# Python
+venv
+.venv
+
+# Logs
+*.log
+
+# Local backup
+*.*_
+*.*bak*

include/diagnosis.h

@@ -0,0 +1,26 @@
+#ifndef DIAGNOSIS_H
+#define DIAGNOSIS_H
+
+#include <Arduino.h>
+#include "led_matrix.h"
+#include "udp_logger.h"
+
+class Diagnosis
+{
+public:
+    Diagnosis();                                     // constructor
+    Diagnosis(UDPLogger *logger, LEDMatrix *matrix); // constructor
+
+    String handle_command(const String &command);
+    String print_device_info();
+    String print_sketch_info();
+    String print_last_reset_details();
+    String print_matrix_fps();
+
+private:
+    UDPLogger *_logger;
+    LEDMatrix * _matrix;
+    void print(const String &s);
+};
+
+#endif // DIAGNOSIS_H

include/led_matrix.h

@@ -1,24 +1,28 @@
 #ifndef LEDMATRIX_H
 #define LEDMATRIX_H
 
+#ifndef FASTLED_INTERNAL
+#define FASTLED_INTERNAL
+#endif
+
 #include <Arduino.h>
 #include <Adafruit_GFX.h>
-#include <Adafruit_NeoMatrix.h>
+#include <FastLED_NeoMatrix.h>
 #include "wordclock_constants.h"
 #include "udp_logger.h"
 
 #define DEFAULT_CURRENT_LIMIT 9999
 
 extern const uint32_t colors_24bit[NUM_COLORS];
-
 class LEDMatrix
 {
 public:
-    LEDMatrix(Adafruit_NeoMatrix * matrix, uint8_t brightness, UDPLogger * logger);
+    LEDMatrix(FastLED_NeoMatrix *matrix, uint8_t brightness, UDPLogger *logger);
     static uint16_t color_24_to_16bit(uint32_t color24bit);
     static uint32_t color_24bit(uint8_t r, uint8_t g, uint8_t b);
     static uint32_t interpolate_color_24bit(uint32_t color1, uint32_t color2, float factor);
     static uint32_t wheel(uint8_t WheelPos);
+    uint16_t get_fps(void);
     void draw_on_matrix_instant();
     void draw_on_matrix_smooth(float factor);
     void flush(void);
@@ -31,17 +35,17 @@ public:
     void setup_matrix();
 
 private:
-    Adafruit_NeoMatrix * _neomatrix;
+    FastLED_NeoMatrix *_neomatrix;
-    UDPLogger * _logger;
+    UDPLogger *_logger;
 
     uint8_t _brightness;
     uint16_t _current_limit;
 
     // target representation of matrix as 2D array
-    uint32_t _target_grid[MATRIX_HEIGHT][MATRIX_WIDTH] = {0};
+    uint32_t _target_grid[MATRIX_HEIGHT][MATRIX_WIDTH];
 
     // current representation of matrix as 2D array
-    uint32_t _current_grid[MATRIX_HEIGHT][MATRIX_WIDTH] = {0};
+    uint32_t _current_grid[MATRIX_HEIGHT][MATRIX_WIDTH];
 
     // target representation of minutes indicator LEDs
     uint32_t _target_minute_indicators[4] = {0, 0, 0, 0};
@@ -53,4 +57,4 @@ private:
     uint16_t _calc_estimated_led_current(uint32_t color);
 };
 
-#endif  /* LEDMATRIX_H */
+#endif /* LEDMATRIX_H */

include/pong.h

@@ -79,8 +79,8 @@ private:
     UDPLogger *_logger;
     uint8_t _gameState = 0;
     uint8_t _numBots = 0;
-    uint8_t _playerMovement[PLAYER_AMOUNT] = {0};
+    uint8_t _playerMovement[PLAYER_AMOUNT];
-    Coords _paddles[PLAYER_AMOUNT][PADDLE_WIDTH] = {0};
+    Coords _paddles[PLAYER_AMOUNT][PADDLE_WIDTH];
     Coords _ball = {0, 0};
     Coords _ball_old = {0, 0};
     int _ballMovement[2] = {0, 0};

include/snake.h

@@ -76,7 +76,7 @@ private:
     uint8_t _userDirection = 0;
     uint8_t _gameState = 0;
     Coords _head = {0, 0};
-    Coords _tail[MAX_TAIL_LENGTH] = {0};
+    Coords _tail[MAX_TAIL_LENGTH];
     Coords _food = {0, 0};
     unsigned long _lastDrawUpdate = 0;
     unsigned long _lastButtonClick = 0;

include/wordclock_constants.h

@@ -16,7 +16,7 @@
 #define HTTP_PORT (80)                                   // Standard HTTP port
 
 // ESP8266 Pins
-#define NEOPIXEL_PIN (14) // pin to which the NeoPixels are attached
+#define FASTLED_PIN (14)  // pin to which the LEDs are attached
 #define BUTTON_PIN (5)    // pin to which the button is attached
 
 // Time limits
@@ -36,8 +36,8 @@
 #define PERIOD_ANIMATION_US (200 * 1000)                   // 200ms
 #define PERIOD_CLOCK_UPDATE_US (1 * 1000 * 1000)           // Must be 1s! Do not change!
 #define PERIOD_HEARTBEAT_US (1 * 1000 * 1000)              // 1s
-#define PERIOD_MATRIX_UPDATE_US (100 * 1000)               // 100ms
+#define PERIOD_MATRIX_UPDATE_US (33 * 1000)                // 33ms
-#define PERIOD_NIGHTMODE_CHECK_US (20 * 1000 * 1000)       // 20s
+#define PERIOD_NIGHTMODE_CHECK_US (30 * 1000 * 1000)       // 30s
 #define PERIOD_TIME_UPDATE_US (1 * 1000 * 1000)            // 1000ms
 #define PERIOD_PONG_US (10 * 1000)                         // 10ms
 #define PERIOD_SNAKE_US (50 * 1000)                        // 50ms
@@ -63,10 +63,12 @@
 
 // Number of colors in colors array
 #define NUM_COLORS (7)
+#define COLOR_ORDER GRB // WS2812B color order
 
 // LED matrix size
 #define MATRIX_WIDTH (11)
 #define MATRIX_HEIGHT (11)
+#define NUM_MATRIX (MATRIX_WIDTH * (MATRIX_HEIGHT + 1))
 
 // NTP macros
 #define BUILD_YEAR (__DATE__ + 7)                   // Will expand to current year at compile time as string.

platformio.ini

@@ -12,15 +12,16 @@
 default_envs = nodemcuv2
 
 [env]
-platform = espressif8266
+platform = espressif8266@2.6.3
 board = nodemcuv2
 framework = arduino
 lib_deps = 
-	adafruit/Adafruit BusIO@^1.15.0
-	adafruit/Adafruit NeoMatrix@^1.3.0
-	adafruit/Adafruit NeoPixel@^1.11.0
 	densaugeo/base64@^1.4.0
+	fastled/FastLED@3.7.0
+	marcmerlin/FastLED NeoMatrix@^1.2
 	tzapu/WiFiManager@^0.16.0
+build_flags =
+	-DFASTLED_ESP8266_RAW_PIN_ORDER
 
 [env:nodemcuv2]
 monitor_speed = 115200

scripts/http_diagnosis.py

@@ -0,0 +1,13 @@
+import requests
+
+r = requests.get("http://wordclock.local/cmd?diag=reset_info")
+print(r.status_code)
+print(r.text)
+
+r = requests.get("http://wordclock.local/cmd?diag=sketch_info")
+print(r.status_code)
+print(r.text)
+
+r = requests.get("http://wordclock.local/cmd?diag=device_info")
+print(r.status_code)
+print(r.text)

scripts/multicastUDP_receiver.py

@@ -4,15 +4,17 @@ import queue
 import socket
 import struct
 import sys
+from pathlib import Path
 
+LOG_PATH = Path("C:/temp/wordclock_log.txt")
 
 def setup_logging():
     FORMAT = "%(asctime)s %(message)s"
     logging.basicConfig(format=FORMAT, level=logging.INFO)
     logger = logging.getLogger()
-    #handler = logging.StreamHandler(sys.stdout)
+    handler = logging.FileHandler(LOG_PATH)
-    #handler.setLevel(logging.INFO)
+    handler.setLevel(logging.INFO)
-    #logger.addHandler(handler)
+    logger.addHandler(handler)
     return logger
 
 
@@ -42,33 +44,9 @@ mreq = struct.pack("4s4s", group, socket.inet_aton(get_ip_address()))
 sock.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, mreq)
 
 logger.info("Ready")
-saveCounter = 0
-
-buffer = queue.Queue(20)
 
 # Receive/respond loop
 while True:
     data, address = sock.recvfrom(1024)
     data_str = data.decode("utf-8").strip()
     logger.info(data_str)
-    data_str = datetime.now().strftime("%b-%d-%Y_%H%M%S") + ": " + data_str
-    buffer.put(data_str)
-    if buffer.full():
-        buffer.get()
-
-    if "NTP-Update not successful" in data_str or "Start program" in data_str:
-        f = open("log.txt", "a")
-        while not buffer.empty():
-            f.write(buffer.get())
-            f.write("\n")
-        f.close()
-        saveCounter = 20
-
-    if saveCounter > 0:
-        f = open("log.txt", "a")
-        f.write(data_str)
-        f.write("\n")
-        if saveCounter == 1:
-            f.write("\n")
-        f.close()
-        saveCounter -= 1

src/connectivity/diagnosis.cpp

@@ -0,0 +1,93 @@
+#include "diagnosis.h"
+
+Diagnosis::Diagnosis()
+{
+    _logger = nullptr;
+}
+
+Diagnosis::Diagnosis(UDPLogger *logger, LEDMatrix *matrix) // constructor
+{
+    _logger = logger;
+    _matrix = matrix;
+}
+
+String Diagnosis::handle_command(const String &command)
+{
+    if (command == "device_info")
+    {
+        return print_device_info();
+    }
+    else if (command == "sketch_info")
+    {
+        return print_sketch_info();
+    }
+    else if (command == "reset_info")
+    {
+        return print_last_reset_details();
+    }
+    else if (command == "matrix_fps")
+    {
+        return print_matrix_fps();
+    }
+    else
+    {
+        // Handle unknown command
+        String unknown_command = "Diagnosis: Unknown command!\n";
+        print(unknown_command);
+        return unknown_command;
+    }
+}
+
+String Diagnosis::print_device_info()
+{
+    // Retrieve and print device information
+    String device_info = "Device Information:\n";
+    device_info += "Chip ID: " + String(ESP.getChipId()) + "\n";
+    device_info += "Flash Chip ID: " + String(ESP.getFlashChipId()) + "\n";
+    device_info += "Flash Chip Size: " + String(ESP.getFlashChipSize()) + " bytes\n";
+    device_info += "Free Heap Size: " + String(ESP.getFreeHeap()) + " bytes\n";
+    device_info += "Free Sketch Space: " + String(ESP.getFreeSketchSpace()) + " bytes\n";
+    device_info += "SDK Version: " + String(ESP.getSdkVersion()) + "\n";
+    print(device_info);
+    return device_info;
+}
+
+String Diagnosis::print_sketch_info()
+{
+    // Retrieve and print sketch information
+    String sketch_info = "Sketch Information:\n";
+    sketch_info += "Sketch Size: " + String(ESP.getSketchSize()) + " bytes\n";
+    sketch_info += "Sketch MD5: " + String(ESP.getSketchMD5()) + "\n";
+    print(sketch_info);
+    return sketch_info;
+}
+
+String Diagnosis::print_last_reset_details()
+{
+    // Retrieve and print last reset details
+    String reset_info = "Last Reset Details:\n";
+    reset_info += "Reset Reason: " + String(ESP.getResetReason()) + "\n";
+    reset_info += "Reset Info: " + String(ESP.getResetInfo()) + "\n";
+    print(reset_info);
+    return reset_info;
+}
+
+String Diagnosis::print_matrix_fps()
+{
+    // Retrieve and print matrix FPS
+    String matrix_fps = "Matrix FPS: " + String(_matrix->get_fps()) + "\n";
+    print(matrix_fps);
+    return matrix_fps;
+}
+
+void Diagnosis::print(const String &s)
+{
+    if (_logger != nullptr)
+    {
+        _logger->log_string(s);
+    }
+    else
+    {
+        Serial.println(s);
+    }
+}

src/connectivity/udp_logger.cpp

@@ -1,8 +1,6 @@
 #include "udp_logger.h"
 
-UDPLogger::UDPLogger()
+UDPLogger::UDPLogger() {}
-{
-}
 
 UDPLogger::UDPLogger(IPAddress interface_addr, IPAddress multicast_addr, int port, String name)
 {
@@ -26,8 +24,10 @@ void UDPLogger::log_string(String message)
         delay(10);
     }
     message = _name + ": " + message;
+#ifdef SERIAL_DEBUG
     Serial.println(message);
     delay(10);
+#endif /* SERIAL_DEBUG */
     _udp.beginPacketMulticast(_multicastAddr, _port, _interfaceAddr);
     message.toCharArray(_packetBuffer, 100);
     _udp.print(_packetBuffer);

src/matrix/led_matrix.cpp

@@ -21,7 +21,7 @@ const uint32_t colors_24bit[NUM_COLORS] = {
  * @param mybrightness the initial brightness of the leds
  * @param mylogger pointer to the UDPLogger object
  */
-LEDMatrix::LEDMatrix(Adafruit_NeoMatrix *matrix, uint8_t brightness, UDPLogger *logger)
+LEDMatrix::LEDMatrix(FastLED_NeoMatrix *matrix, uint8_t brightness, UDPLogger *logger)
 {
     _neomatrix = matrix;
     _brightness = brightness;
@@ -181,6 +181,11 @@ void LEDMatrix::flush(void)
     _target_minute_indicators[3] = 0;
 }
 
+uint16_t LEDMatrix::get_fps(void)
+{
+    return FastLED.getFPS();
+}
+
 /**
  * @brief Write target pixels directly to leds
  *

src/wordclock_esp8266.cpp

@@ -23,17 +23,17 @@
 #include <Arduino.h>
 #include "wordclock_esp8266.h"
 
-#include <Adafruit_GFX.h>       // https://github.com/adafruit/Adafruit-GFX-Library
+#include <Adafruit_GFX.h> // https://github.com/adafruit/Adafruit-GFX-Library
-#include <Adafruit_NeoMatrix.h> // https://github.com/adafruit/Adafruit_NeoMatrix
-#include <Adafruit_NeoPixel.h>  // NeoPixel library used to run the NeoPixel LEDs: https://github.com/adafruit/Adafruit_NeoPixel
 #include <base64.hpp>
-#include <EEPROM.h>                // from ESP8266 Arduino Core (automatically installed when ESP8266 was installed via Boardmanager)
+#include <EEPROM.h> // from ESP8266 Arduino Core (automatically installed when ESP8266 was installed via Boardmanager)
 #include <ESP8266WebServer.h>
 #include <ESP8266WiFi.h>
+#include <FastLED.h>
 #include <WiFiManager.h> // https://github.com/tzapu/WiFiManager WiFi Configuration Magic
 
 // own libraries
 #include "animation_functions.h"
+#include "diagnosis.h"
 #include "led_matrix.h"
 #include "littlefs_wrapper.h"
 #include "ota_functions.h"
@@ -49,10 +49,11 @@
 //                               GLOBAL VARIABLES
 // ----------------------------------------------------------------------------------
 UDPLogger logger; // Global UDP logger instance
-Adafruit_NeoMatrix matrix = Adafruit_NeoMatrix(MATRIX_WIDTH, MATRIX_HEIGHT + 1, NEOPIXEL_PIN,
+
-                                               NEO_MATRIX_TOP + NEO_MATRIX_LEFT + NEO_MATRIX_ROWS + NEO_MATRIX_ZIGZAG,
+CRGB leds[NUM_MATRIX]; // LED array for FastLED
-                                               NEO_GRB + NEO_KHZ800);   // NeoMatrix
+FastLED_NeoMatrix matrix = FastLED_NeoMatrix(leds, MATRIX_WIDTH, (MATRIX_HEIGHT + 1),
-LEDMatrix led_matrix = LEDMatrix(&matrix, DEFAULT_BRIGHTNESS, &logger); // NeoMatrix wrapper
+                                             NEO_MATRIX_TOP + NEO_MATRIX_LEFT + NEO_MATRIX_ROWS + NEO_MATRIX_ZIGZAG);
+LEDMatrix led_matrix = LEDMatrix(&matrix, DEFAULT_BRIGHTNESS, &logger); // FastLED_NeoMatrix wrapper
 ESP8266WebServer webserver(HTTP_PORT);                                  // Webserver
 
 // ----------------------------------------------------------------------------------
@@ -78,7 +79,7 @@ static bool flg_reset_wifi_creds = false;               // Used to reset stored
 static float filter_factor = DEFAULT_SMOOTHING_FACTOR;  // Stores smoothing factor for led transition, value of 1 represents no smoothing.
 static uint32_t main_color_clock = colors_24bit[2];     // Color of the clock and digital clock
 static uint8_t current_brightness = DEFAULT_BRIGHTNESS; // Current brightness of LEDs
-static ClockState_en current_state = ST_CLOCK; // Stores current state
+static ClockState_en current_state = ST_CLOCK;          // Stores current state
 
 // Other variables
 static uint32 last_led_direct_us = 0;  // Time of last direct LED command (=> fall back to normal mode after timeout)
@@ -98,7 +99,6 @@ static const uint32_t period_timings[NUM_STATES] = {PERIOD_TIME_UPDATE_US, PERIO
                                                     PERIOD_ANIMATION_US, PERIOD_TETRIS_US, PERIOD_SNAKE_US,
                                                     PERIOD_PONG_US, PERIOD_ANIMATION_US};
 
-
 // ----------------------------------------------------------------------------------
 //                                        SETUP
 // ----------------------------------------------------------------------------------
@@ -118,6 +118,9 @@ void setup()
     Serial.printf("Reset address: %u\n", reset_info->excvaddr);
     Serial.println();
 
+    // Init FastLED
+    FastLED.addLeds<WS2812B, FASTLED_PIN, COLOR_ORDER>(leds, NUM_MATRIX);
+
     // Init EEPROM
     EEPROM.begin(EEPROM_SIZE);
 
@@ -234,7 +237,6 @@ void loop()
     {
         send_heartbeat(); // send heartbeat update
         last_heartbeat_us = system_get_time();
-        delay(10);
     }
 
     if (!flg_night_mode && ((current_time_us - last_animation_step_us) > period_timings[current_state]) &&
@@ -242,7 +244,6 @@ void loop()
     {
         handle_current_state(); // handle current state
         last_animation_step_us = system_get_time();
-        delay(10);
     }
 
     if ((current_time_us - last_brightness_update_us) >= PERIOD_BRIGHTNESS_UPDATE_US)
@@ -250,14 +251,12 @@ void loop()
         current_brightness = update_brightness(); // update brightness
         logger.log_string("Brightness: " + String(((uint16_t)current_brightness * 100) / UINT8_MAX) + "%");
         last_brightness_update_us = system_get_time();
-        delay(10);
     }
 
     if ((current_time_us - last_matrix_update_us) >= PERIOD_MATRIX_UPDATE_US)
     {
         update_matrix(); // update matrix
         last_matrix_update_us = system_get_time();
-        delay(10);
     }
 
     if ((current_time_us - last_time_update_us) >= PERIOD_TIME_UPDATE_US)
@@ -271,7 +270,7 @@ void loop()
             ESP.restart();
         }
 
-       last_time_update_us = system_get_time();
+        last_time_update_us = system_get_time();
     }
 
     if ((current_time_us - last_nightmode_check_us) >= PERIOD_NIGHTMODE_CHECK_US)
@@ -347,87 +346,87 @@ void handle_current_state()
 {
     switch (current_state)
     {
-        case ST_CLOCK: // state clock
+    case ST_CLOCK: // state clock
+    {
+        if (tm_mgr.tm_state() == TM_NORMAL)
         {
-            if (tm_mgr.tm_state() == TM_NORMAL)
+            (void)show_string_on_clock(time_to_string((uint8_t)tm_mgr.hour(), (uint8_t)tm_mgr.minute()), main_color_clock);
-            {
+            draw_minute_indicator((uint8_t)tm_mgr.minute(), main_color_clock);
-                (void)show_string_on_clock(time_to_string((uint8_t)tm_mgr.hour(), (uint8_t)tm_mgr.minute()), main_color_clock);
-                draw_minute_indicator((uint8_t)tm_mgr.minute(), main_color_clock);
-            }
-            else if (tm_mgr.ntp_sync_overdue())  // if NTP sync is overdue
-            {
-                (void)show_string_on_clock(time_to_string((uint8_t)tm_mgr.hour(), (uint8_t)tm_mgr.minute()), main_color_clock);
-                draw_minute_indicator((uint8_t)tm_mgr.minute(), colors_24bit[6]); // in blue to indicate a network problem
-            }
-            else  // if no NTP sync has been done, only show 4 blue minute indicators
-            {
-                // clear matrix
-                led_matrix.flush();
-                // Turn on minutes LEDs (blue)
-                led_matrix.set_min_indicator((uint8_t)0b1111, colors_24bit[6]);
-                led_matrix.draw_on_matrix_instant();
-            }
-            break;
         }
-        case ST_DICLOCK: // state diclock
+        else if (tm_mgr.ntp_sync_overdue()) // if NTP sync is overdue
         {
-            if (tm_mgr.ntp_sync_successful())
+            (void)show_string_on_clock(time_to_string((uint8_t)tm_mgr.hour(), (uint8_t)tm_mgr.minute()), main_color_clock);
-            {
+            draw_minute_indicator((uint8_t)tm_mgr.minute(), colors_24bit[6]); // in blue to indicate a network problem
-                show_digital_clock((uint8_t)tm_mgr.hour(), (uint8_t)tm_mgr.minute(), main_color_clock);
-            }
-            else
-            {
-                // clear matrix
-                led_matrix.flush();
-                // Turn on minutes LEDs (blue)
-                led_matrix.set_min_indicator((uint8_t)0b1111, colors_24bit[6]);
-                led_matrix.draw_on_matrix_instant();
-            }
-            break;
         }
-        case ST_SPIRAL: // state spiral
+        else // if no NTP sync has been done, only show 4 blue minute indicators
         {
-            int res = draw_spiral(false, spiral_direction, MATRIX_WIDTH - 2);
+            // clear matrix
-            if ((bool)res && spiral_direction == 0)
+            led_matrix.flush();
-            {
+            // Turn on minutes LEDs (blue)
-                // change spiral direction to closing (draw empty LEDs)
+            led_matrix.set_min_indicator((uint8_t)0b1111, colors_24bit[6]);
-                spiral_direction = true;
+            led_matrix.draw_on_matrix_instant();
-                // init spiral with new spiral direction
-                draw_spiral(true, spiral_direction, MATRIX_WIDTH - 1);
-            }
-            else if (res && spiral_direction == 1)
-            {
-                // reset spiral direction to normal drawing LEDs
-                spiral_direction = false;
-                // init spiral with new spiral direction
-                draw_spiral(true, spiral_direction, MATRIX_WIDTH - 1);
-            }
-            break;
         }
-        case ST_TETRIS: // state tetris
+        break;
+    }
+    case ST_DICLOCK: // state diclock
+    {
+        if (tm_mgr.ntp_sync_successful())
         {
-            tetris.loopCycle();
+            show_digital_clock((uint8_t)tm_mgr.hour(), (uint8_t)tm_mgr.minute(), main_color_clock);
-            break;
         }
-        case ST_SNAKE: // state snake
+        else
         {
-            snake.loopCycle();
+            // clear matrix
-            break;
+            led_matrix.flush();
+            // Turn on minutes LEDs (blue)
+            led_matrix.set_min_indicator((uint8_t)0b1111, colors_24bit[6]);
+            led_matrix.draw_on_matrix_instant();
         }
-        case ST_PINGPONG: // state ping pong
+        break;
+    }
+    case ST_SPIRAL: // state spiral
+    {
+        int res = draw_spiral(false, spiral_direction, MATRIX_WIDTH - 2);
+        if ((bool)res && spiral_direction == 0)
         {
-            pong.loopCycle();
+            // change spiral direction to closing (draw empty LEDs)
-            break;
+            spiral_direction = true;
+            // init spiral with new spiral direction
+            draw_spiral(true, spiral_direction, MATRIX_WIDTH - 1);
         }
-        case ST_HEARTS:
+        else if (res && spiral_direction == 1)
         {
-            draw_heart_animation();
+            // reset spiral direction to normal drawing LEDs
-            break;
+            spiral_direction = false;
-        }
+            // init spiral with new spiral direction
-        default:
+            draw_spiral(true, spiral_direction, MATRIX_WIDTH - 1);
-        {
-            break;
         }
+        break;
+    }
+    case ST_TETRIS: // state tetris
+    {
+        tetris.loopCycle();
+        break;
+    }
+    case ST_SNAKE: // state snake
+    {
+        snake.loopCycle();
+        break;
+    }
+    case ST_PINGPONG: // state ping pong
+    {
+        pong.loopCycle();
+        break;
+    }
+    case ST_HEARTS:
+    {
+        draw_heart_animation();
+        break;
+    }
+    default:
+    {
+        break;
+    }
     }
 }
 
@@ -503,34 +502,34 @@ void on_state_entry(uint8_t state)
     filter_factor = DEFAULT_SMOOTHING_FACTOR;
     switch (state)
     {
-        case ST_SPIRAL:
+    case ST_SPIRAL:
-        {
+    {
-            spiral_direction = 0; // Init spiral with normal drawing mode
+        spiral_direction = 0; // Init spiral with normal drawing mode
-            draw_spiral(true, spiral_direction, MATRIX_WIDTH - 1);
+        draw_spiral(true, spiral_direction, MATRIX_WIDTH - 1);
-            break;
+        break;
-        }
+    }
-        case ST_TETRIS:
+    case ST_TETRIS:
-        {
+    {
-            filter_factor = 1.0f; // no smoothing
+        filter_factor = 1.0f; // no smoothing
-            tetris.ctrlStart();
+        tetris.ctrlStart();
-            break;
+        break;
-        }
+    }
-        case ST_SNAKE:
+    case ST_SNAKE:
-        {
+    {
-            filter_factor = 1.0f; // no smoothing
+        filter_factor = 1.0f; // no smoothing
-            snake.initGame();
+        snake.initGame();
-            break;
+        break;
-        }
+    }
-        case ST_PINGPONG:
+    case ST_PINGPONG:
-        {
+    {
-            filter_factor = 1.0f; // no smoothing
+        filter_factor = 1.0f; // no smoothing
-            pong.initGame(1);
+        pong.initGame(1);
-            break;
+        break;
-        }
+    }
-        default:
+    default:
-        {
+    {
-            break;
+        break;
-        }
+    }
     }
 }
 
@@ -546,7 +545,7 @@ void state_change(ClockState_en new_state)
         set_night_mode(false); // deactivate Nightmode
     }
 
-    led_matrix.flush();       // first clear matrix
+    led_matrix.flush();        // first clear matrix
     current_state = new_state; // set new state
     on_state_entry((uint8_t)current_state);
     logger.log_string("State change to: " + state_names[(uint8_t)current_state]);
@@ -691,13 +690,16 @@ void draw_main_color()
  */
 void handle_command()
 {
+    bool send204 = true; // flag to send 204 response
     // receive command and handle accordingly
+#ifdef SERIAL_DEBUG
     for (uint8_t i = 0; i < webserver.args(); i++)
     {
         Serial.print(webserver.argName(i));
         Serial.print(F(": "));
         Serial.println(webserver.arg(i));
     }
+#endif /* SERIAL_DEBUG */
 
     if (webserver.argName(0).equals("led")) // the parameter which was sent to this server is led color
     {
@@ -798,7 +800,6 @@ void handle_command()
     else if (webserver.argName(0).equals("tetris"))
     {
         String cmd_str = webserver.arg(0);
-        // logger.log_string("Tetris cmd via Webserver to: " + cmd_str);
         if (cmd_str.equals("up"))
         {
             tetris.ctrlUp();
@@ -827,7 +828,6 @@ void handle_command()
     else if (webserver.argName(0).equals("snake"))
     {
         String cmd_str = webserver.arg(0);
-        // logger.log_string("Snake cmd via Webserver to: " + cmd_str);
         if (cmd_str.equals("up"))
         {
             snake.ctrlUp();
@@ -852,7 +852,6 @@ void handle_command()
     else if (webserver.argName(0).equals("pong"))
     {
         String cmd_str = webserver.arg(0);
-        // logger.log_string("Pong cmd via Webserver to: " + cmd_str);
         if (cmd_str.equals("up"))
         {
             pong.ctrlUp(1);
@@ -866,8 +865,18 @@ void handle_command()
             pong.initGame(1);
         }
     }
+    else if (webserver.argName(0).equals("diag"))
+    {
+        String cmd_str = webserver.arg(0);
+        Diagnosis diag(&logger, &led_matrix);
+        webserver.send(200, "text/plain", diag.handle_command(cmd_str));
+        send204 = false;
+    }
 
-    webserver.send(204, "text/plain", "No Content"); // this page doesn't send back content --> 204
+    if (send204)
+    {
+        webserver.send(204, "text/plain", "No Content"); // this page doesn't send back content --> 204
+    }
 }
 
 /**
@@ -876,6 +885,7 @@ void handle_command()
  */
 void handle_data_request()
 {
+#ifdef SERIAL_DEBUG
     // receive data request and handle accordingly
     for (uint8_t i = 0; i < webserver.args(); i++)
     {
@@ -883,7 +893,7 @@ void handle_data_request()
         Serial.print(F(": "));
         Serial.println(webserver.arg(i));
     }
-
+#endif /* SERIAL_DEBUG */
     if (webserver.argName(0).equals("key"))
     {
         String message = "{";