fix: improve weight stability check before sending to API

Introducing enum for handling the NFC state to improve code readability

CHANGELOG.md

@@ -1,5 +1,67 @@
 # Changelog
 
+## [1.5.1] - 2025-03-30
+### Changed
+- update version to 1.5.1 and improve OTA update handling with task management
+
+
+## [1.4.14] - 2025-03-30
+### Added
+- add auto-tare functionality and update scale handling based on touch sensor connection
+
+### Changed
+- update platformio.ini for version v1.4.14
+
+
+## [1.4.13] - 2025-03-30
+### Changed
+- update platformio.ini for version v1.4.13
+
+### Fixed
+- update touch sensor connection logic to correctly identify connection status
+
+
+## [1.4.12] - 2025-03-30
+### Added
+- add touch sensor connection check and update logic
+
+### Changed
+- update platformio.ini for version v1.4.12
+- update README files to clarify PN532 DIP switch settings
+
+
+## [1.4.11] - 2025-03-30
+### Added
+- Renamed states of NFC state machine and introduced new state machine for spoolman API
+
+### Changed
+- update platformio.ini for version v1.4.11
+- Merge branch 'main' of github.com:ManuelW77/Filaman
+- Merge pull request #31 from janecker/nfc_rework
+- Introducing enum for handling the NFC state to improve code readability
+
+
+## [1.4.10] - 2025-03-30
+### Added
+- add manual tare functionality for scale
+- add debounce handling for TTP223 touch sensor
+- add TTP223 touch sensor support and wiring configuration
+
+### Changed
+- update platformio.ini for version v1.4.10
+
+### Fixed
+- update TTP223 pin configuration and adjust touch sensor logic
+
+
+## [1.4.9] - 2025-03-29
+### Changed
+- update platformio.ini for version v1.4.9
+
+### Fixed
+- enhance HTTP method handling in sendToApi function
+
+
 ## [1.4.8] - 2025-03-29
 ### Changed
 - update platformio.ini for version v1.4.8

README.de.md

@@ -55,19 +55,22 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 ## Hardware-Anforderungen
 
 ### Komponenten
-- **ESP32 Entwicklungsboard:** Jede ESP32-Variante.
+- **ESP32 Development Board:** Any ESP32 variant.
-[Amazon Link](https://amzn.eu/d/aXThslf)
+[Amazon Link](https://amzn.to/3FHea6D)
-- **HX711 5kg Wägezellen-Verstärker:** Für Gewichtsmessung.
+- **HX711 5kg Load Cell Amplifier:** For weight measurement.
-[Amazon Link](https://amzn.eu/d/06A0DLb)
+[Amazon Link](https://amzn.to/4ja1KTe)
-- **OLED 0.96 Zoll I2C weiß/gelb Display:** 128x64 SSD1306.
+- **OLED 0.96 Zoll I2C white/yellow Display:** 128x64 SSD1306.
-[Amazon Link](https://amzn.eu/d/0AuBp2c)
+[Amazon Link](https://amzn.to/445aaa9)
-- **PN532 NFC NXP RFID-Modul V3:** Für NFC-Tag-Operationen.
+- **PN532 NFC NXP RFID-Modul V3:** For NFC tag operations.
-[Amazon Link](https://amzn.eu/d/jfIuQXb)
+[Amazon Link](https://amzn.to/4iO6CO4)
-- **NFC Tags NTAG213 NTA215:** RFID Tag
+- **NFC Tags NTAG213 NTAG215:** RFID Tag
-[Amazon Link](https://amzn.eu/d/9Z6mXc1)
+[Amazon Link](https://amzn.to/3E071xO)
+- **TTP223 Touch Sensor (optional):** For reTARE per Button/Touch
+[Amazon Link](https://amzn.to/4hTChMK)
 
-### Pin-Konfiguration
+
-| Komponente        | ESP32 Pin |
+### Pin Konfiguration
+| Component          | ESP32 Pin |
 |-------------------|-----------|
 | HX711 DOUT        | 16        |
 | HX711 SCK         | 17        |
@@ -77,8 +80,10 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 | PN532 RESET       | 33        |
 | PN532 SDA         | 21        |
 | PN532 SCL         | 22        |
+| TTP223 I/O        | 25        |
 
-**Achte darauf, dass am PN532 die DIP-Schalter auf I2C gestellt sind**
+**!! Achte darauf, dass am PN532 die DIP-Schalter auf I2C gestellt sind**  
+**Nutze den 3V Pin vom ESP für den Touch Sensor**
 
 ![Wiring](./img/Schaltplan.png)
 

README.md

@@ -60,15 +60,17 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 
 ### Components
 - **ESP32 Development Board:** Any ESP32 variant.
-[Amazon Link](https://amzn.eu/d/aXThslf)
+[Amazon Link](https://amzn.to/3FHea6D)
 - **HX711 5kg Load Cell Amplifier:** For weight measurement.
-[Amazon Link](https://amzn.eu/d/06A0DLb)
+[Amazon Link](https://amzn.to/4ja1KTe)
 - **OLED 0.96 Zoll I2C white/yellow Display:** 128x64 SSD1306.
-[Amazon Link](https://amzn.eu/d/0AuBp2c)
+[Amazon Link](https://amzn.to/445aaa9)
 - **PN532 NFC NXP RFID-Modul V3:** For NFC tag operations.
-[Amazon Link](https://amzn.eu/d/jfIuQXb)
+[Amazon Link](https://amzn.to/4iO6CO4)
 - **NFC Tags NTAG213 NTAG215:** RFID Tag
-[Amazon Link](https://amzn.eu/d/9Z6mXc1)
+[Amazon Link](https://amzn.to/3E071xO)
+- **TTP223 Touch Sensor (optional):** For reTARE per Button/Touch
+[Amazon Link](https://amzn.to/4hTChMK)
 
 
 ### Pin Configuration
@@ -82,8 +84,10 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 | PN532 RESET       | 33        |
 | PN532 SDA         | 21        |
 | PN532 SCL         | 22        |
+| TTP223 I/O        | 25        |
 
-**Make sure that the DIP switches on the PN532 are set to I2C**
+**!! Make sure that the DIP switches on the PN532 are set to I2C**  
+**Use the 3V pin from the ESP for the touch sensor**
 
 ![Wiring](./img/Schaltplan.png)
 

html/waage.html

@@ -55,6 +55,7 @@
                 <h5 class="card-title">Sacle Calibration</h5>
                 <button id="calibrateBtn" class="btn btn-primary">Calibrate Scale</button>
                 <button id="tareBtn" class="btn btn-secondary">Tare Scale</button>
+                &nbsp;&nbsp;&nbsp;Enable Auto-TARE <input type="checkbox" id="autoTareCheckbox" onchange="setAutoTare(this.checked);" {{autoTare}}>
                 <div id="statusMessage" class="mt-3"></div>
             </div>
         </div>
@@ -140,6 +141,15 @@
             }));
         });
 
+        // Add auto-tare function
+        function setAutoTare(enabled) {
+            ws.send(JSON.stringify({
+                type: 'scale',
+                payload: 'setAutoTare',
+                enabled: enabled
+            }));
+        }
+
         // WebSocket-Verbindung beim Laden der Seite initiieren
         connectWebSocket();
     </script>

platformio.ini

@@ -9,8 +9,8 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [common]
-version = "1.4.8"
+version = "1.5.1"
-to_old_version = "1.4.0"
+to_old_version = "1.5.0"
 
 ##
 [env:esp32dev]

scripts/gzip_files.py

@@ -14,7 +14,7 @@ def copy_file(input_file, output_file):
 
 def should_compress(file):
      # Skip compression for spoolman.html
-    if file == 'spoolman.html':
+    if file == 'spoolman.html' or file == 'waage.html':
         return False
     # Komprimiere nur bestimmte Dateitypen
     return file.endswith(('.js', '.png', '.css', '.html'))

src/api.cpp

@@ -3,7 +3,8 @@
 #include <ArduinoJson.h>
 #include "commonFS.h"
 
-bool spoolman_connected = false;
+volatile spoolmanApiStateType spoolmanApiState = API_INIT;
+//bool spoolman_connected = false;
 String spoolmanUrl = "";
 bool octoEnabled = false;
 String octoUrl = "";
@@ -85,6 +86,7 @@ JsonDocument fetchSingleSpoolInfo(int spoolId) {
 }
 
 void sendToApi(void *parameter) {
+    spoolmanApiState = API_TRANSMITTING;
     SendToApiParams* params = (SendToApiParams*)parameter;
 
     // Extrahiere die Werte
@@ -100,9 +102,10 @@ void sendToApi(void *parameter) {
     http.addHeader("Content-Type", "application/json");
     if (octoEnabled && octoToken != "") http.addHeader("X-Api-Key", octoToken);
 
-    int httpCode = http.PUT(updatePayload);
+    int httpCode;
     if (httpType == "PATCH") httpCode = http.PATCH(updatePayload);
-    if (httpType == "POST") httpCode = http.POST(updatePayload);
+    else if (httpType == "POST") httpCode = http.POST(updatePayload);
+    else httpCode = http.PUT(updatePayload);
 
     if (httpCode == HTTP_CODE_OK) {
         Serial.println("Spoolman erfolgreich aktualisiert");
@@ -118,6 +121,7 @@ void sendToApi(void *parameter) {
     // Speicher freigeben
     delete params;
     vTaskDelete(NULL);
+    spoolmanApiState = API_IDLE;
 }
 
 bool updateSpoolTagId(String uidString, const char* payload) {
@@ -478,7 +482,8 @@ bool checkSpoolmanInstance(const String& url) {
                     return false;
                 }
 
-                spoolman_connected = true;
+                spoolmanApiState = API_IDLE;
+                oledShowTopRow();
                 return strcmp(status, "healthy") == 0;
             }
         }

src/api.h

@@ -6,7 +6,13 @@
 #include "website.h"
 #include "display.h"
 #include <ArduinoJson.h>
+typedef enum {
+    API_INIT,
+    API_IDLE,
+    API_TRANSMITTING
+} spoolmanApiStateType;
 
+extern volatile spoolmanApiStateType spoolmanApiState;
 extern bool spoolman_connected;
 extern String spoolmanUrl;
 extern bool octoEnabled;

src/config.cpp

@@ -19,6 +19,12 @@ const uint16_t SCALE_LEVEL_WEIGHT = 500;
 uint16_t defaultScaleCalibrationValue = 430;
 // ***** HX711
 
+// ***** TTP223 (Touch Sensor)
+// TTP223 circuit wiring
+const uint8_t TTP223_PIN = 25;
+// ***** TTP223
+
+
 // ***** Display
 // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
 // On an ESP32:   21(SDA),  22(SCL)

src/config.h

@@ -11,6 +11,8 @@ extern const uint8_t LOADCELL_SCK_PIN;
 extern const uint8_t calVal_eepromAdress;
 extern const uint16_t SCALE_LEVEL_WEIGHT;
 
+extern const uint8_t TTP223_PIN;
+
 extern const int8_t OLED_RESET;
 extern const uint8_t SCREEN_ADDRESS;
 extern const uint8_t SCREEN_WIDTH;

src/display.cpp

@@ -177,7 +177,7 @@ void oledShowTopRow() {
         display.drawBitmap(50, 0, bitmap_off , 16, 16, WHITE);
     }
 
-    if (spoolman_connected == 1) {
+    if (spoolmanApiState != API_INIT) {
         display.drawBitmap(80, 0, bitmap_spoolman_on , 16, 16, WHITE);
     } else {
         display.drawBitmap(80, 0, bitmap_off , 16, 16, WHITE);

src/main.cpp

@@ -15,6 +15,7 @@
 
 bool mainTaskWasPaused = 0;
 uint8_t scaleTareCounter = 0;
+bool touchSensorConnected = false;
 
 // ##### SETUP #####
 void setup() {
@@ -39,7 +40,6 @@ void setup() {
   setupWebserver(server);
 
   // Spoolman API
-  // api.cpp
   initSpoolman();
 
   // Bambu MQTT
@@ -48,7 +48,16 @@ void setup() {
   // NFC Reader
   startNfc();
 
-  start_scale();
+  // Touch Sensor
+  pinMode(TTP223_PIN, INPUT_PULLUP);
+  if (digitalRead(TTP223_PIN) == LOW) 
+  {
+    Serial.println("Touch Sensor is connected");
+    touchSensorConnected = true;
+  }
+
+  // Scale
+  start_scale(touchSensorConnected);
 
   // WDT initialisieren mit 10 Sekunden Timeout
   bool panic = true; // Wenn true, löst ein WDT-Timeout einen System-Panik aus
@@ -84,13 +93,25 @@ uint8_t autoAmsCounter = 0;
 uint8_t weightSend = 0;
 int16_t lastWeight = 0;
 
+// WIFI check variables
 unsigned long lastWifiCheckTime = 0;
 const unsigned long wifiCheckInterval = 60000; // Überprüfe alle 60 Sekunden (60000 ms)
 
+// Button debounce variables
+unsigned long lastButtonPress = 0;
+const unsigned long debounceDelay = 500; // 500 ms debounce delay
+
 // ##### PROGRAM START #####
 void loop() {
   unsigned long currentMillis = millis();
 
+  // Überprüfe den Status des Touch Sensors
+  if (touchSensorConnected && digitalRead(TTP223_PIN) == HIGH && currentMillis - lastButtonPress > debounceDelay) 
+  {
+    lastButtonPress = currentMillis;
+    scaleTareRequest = true;
+  }
+
   // Überprüfe regelmäßig die WLAN-Verbindung
   if (intervalElapsed(currentMillis, lastWifiCheckTime, wifiCheckInterval)) 
   {
@@ -107,7 +128,7 @@ void loop() {
 
     if (intervalElapsed(currentMillis, lastAutoSetBambuAmsTime, autoSetBambuAmsInterval)) 
     {
-      if (hasReadRfidTag == 0)
+      if (nfcReaderState == NFC_IDLE)
       {
         lastAutoSetBambuAmsTime = currentMillis;
         oledShowMessage("Auto Set         " + String(autoSetBambuAmsCounter - autoAmsCounter) + "s");
@@ -141,7 +162,7 @@ void loop() {
   // Ausgabe der Waage auf Display
   if(pauseMainTask == 0)
   {
-    if (mainTaskWasPaused || (weight != lastWeight && hasReadRfidTag == 0 && (!autoSendToBambu || autoSetToBambuSpoolId == 0)))
+    if (mainTaskWasPaused || (weight != lastWeight && nfcReaderState == NFC_IDLE && (!autoSendToBambu || autoSetToBambuSpoolId == 0)))
     {
       (weight < 2) ? ((weight < -2) ? oledShowMessage("!! -0") : oledShowWeight(0)) : oledShowWeight(weight);
     }
@@ -154,31 +175,22 @@ void loop() {
 
 
   // Wenn Timer abgelaufen und nicht gerade ein RFID-Tag geschrieben wird
-  if (currentMillis - lastWeightReadTime >= weightReadInterval && hasReadRfidTag < 3)
+  if (currentMillis - lastWeightReadTime >= weightReadInterval && nfcReaderState < NFC_WRITING)
   {
     lastWeightReadTime = currentMillis;
 
     // Prüfen ob die Waage korrekt genullt ist
-    if ((weight > 0 && weight < 5) || weight < -1)
+    if (autoTare && (weight > 0 && weight < 5) || weight < 0)
     {
-      if(scaleTareCounter < 5)
+      scale_tare_counter++;
-      {
-        scaleTareCounter++;
-      }
-      else
-      {
-        scaleTareRequest = true;
-        scaleTareCounter = 0;
-      }
-      
     }
     else
     {
-      scaleTareCounter = 0;
+      scale_tare_counter = 0;
     }
 
     // Prüfen ob das Gewicht gleich bleibt und dann senden
-    if (weight == lastWeight && weight > 5)
+    if (abs(weight - lastWeight) <= 2 && weight > 5)
     {
       weigthCouterToApi++;
     } 
@@ -190,7 +202,8 @@ void loop() {
   }
 
   // reset weight counter after writing tag
-  if (currentMillis - lastWeightReadTime >= weightReadInterval && hasReadRfidTag > 1)
+  // TBD: what exactly is the logic behind this?
+  if (currentMillis - lastWeightReadTime >= weightReadInterval && nfcReaderState != NFC_IDLE && nfcReaderState != NFC_READ_SUCCESS)
   {
     weigthCouterToApi = 0;
   }
@@ -198,7 +211,7 @@ void loop() {
   lastWeight = weight;
 
   // Wenn ein Tag mit SM id erkannte wurde und der Waage Counter anspricht an SM Senden
-  if (spoolId != "" && weigthCouterToApi > 3 && weightSend == 0 && hasReadRfidTag == 1) {
+  if (spoolId != "" && weigthCouterToApi > 3 && weightSend == 0 && nfcReaderState == NFC_READ_SUCCESS) {
     oledShowIcon("loading");
     if (updateSpoolWeight(spoolId, weight)) 
     {

src/nfc.cpp

@@ -18,7 +18,7 @@ String spoolId = "";
 String nfcJsonData = "";
 volatile bool pauseBambuMqttTask = false;
 
-volatile uint8_t hasReadRfidTag = 0;
+volatile nfcReaderStateType nfcReaderState = NFC_IDLE;
 // 0 = nicht gelesen
 // 1 = erfolgreich gelesen
 // 2 = fehler beim Lesen
@@ -242,7 +242,7 @@ void writeJsonToTag(void *parameter) {
   Serial.println("Erstelle NDEF-Message...");
   Serial.println(payload);
 
-  hasReadRfidTag = 3;
+  nfcReaderState = NFC_WRITING;
   vTaskSuspend(RfidReaderTask);
   vTaskDelay(50 / portTICK_PERIOD_MS);
 
@@ -288,7 +288,7 @@ void writeJsonToTag(void *parameter) {
         //oledShowMessage("NFC-Tag written");
         oledShowIcon("success");
         vTaskDelay(1000 / portTICK_PERIOD_MS);
-        hasReadRfidTag = 5;
+        nfcReaderState = NFC_WRITE_SUCCESS;
         // aktualisieren der Website wenn sich der Status ändert
         sendNfcData(nullptr);
         pauseBambuMqttTask = false;
@@ -310,7 +310,7 @@ void writeJsonToTag(void *parameter) {
         Serial.println("Fehler beim Schreiben der NDEF-Message auf den Tag");
         oledShowIcon("failed");
         vTaskDelay(2000 / portTICK_PERIOD_MS);
-        hasReadRfidTag = 4;
+        nfcReaderState = NFC_WRITE_ERROR;
     }
   }
   else
@@ -318,7 +318,7 @@ void writeJsonToTag(void *parameter) {
     Serial.println("Fehler: Kein Tag zu schreiben gefunden.");
     oledShowMessage("No NFC-Tag found");
     vTaskDelay(2000 / portTICK_PERIOD_MS);
-    hasReadRfidTag = 0;
+    nfcReaderState = NFC_IDLE;
   }
   
   sendWriteResult(nullptr, success);
@@ -334,7 +334,7 @@ void startWriteJsonToTag(const char* payload) {
   char* payloadCopy = strdup(payload);
   
   // Task nicht mehrfach starten
-  if (hasReadRfidTag != 3) {
+  if (nfcReaderState != NFC_WRITING) {
     // Erstelle die Task
     xTaskCreate(
         writeJsonToTag,        // Task-Funktion
@@ -351,7 +351,7 @@ void scanRfidTask(void * parameter) {
   Serial.println("RFID Task gestartet");
   for(;;) {
     // Wenn geschrieben wird Schleife aussetzen
-    if (hasReadRfidTag != 3)
+    if (nfcReaderState != NFC_WRITING)
     {
       yield();
 
@@ -363,12 +363,12 @@ void scanRfidTask(void * parameter) {
 
       foundNfcTag(nullptr, success);
       
-      if (success && hasReadRfidTag != 1)
+      if (success && nfcReaderState != NFC_READ_SUCCESS)
       {
         // Display some basic information about the card
         Serial.println("Found an ISO14443A card");
 
-        hasReadRfidTag = 6;
+        nfcReaderState = NFC_READING;
 
         oledShowIcon("transfer");
         vTaskDelay(500 / portTICK_PERIOD_MS);
@@ -406,11 +406,11 @@ void scanRfidTask(void * parameter) {
             {
               oledShowMessage("NFC-Tag unknown");
               vTaskDelay(2000 / portTICK_PERIOD_MS);
-              hasReadRfidTag = 2;
+              nfcReaderState = NFC_READ_ERROR;
             }
             else 
             {
-              hasReadRfidTag = 1;
+              nfcReaderState = NFC_READ_SUCCESS;
             }
 
             free(data);
@@ -418,7 +418,7 @@ void scanRfidTask(void * parameter) {
           else
           {
             oledShowMessage("NFC-Tag read error");
-            hasReadRfidTag = 2;
+            nfcReaderState = NFC_READ_ERROR;
           }
         }
         else
@@ -427,9 +427,9 @@ void scanRfidTask(void * parameter) {
         }
       }
 
-      if (!success && hasReadRfidTag > 0)
+      if (!success && nfcReaderState != NFC_IDLE)
       {
-        hasReadRfidTag = 0;
+        nfcReaderState = NFC_IDLE;
         //uidString = "";
         nfcJsonData = "";
         Serial.println("Tag entfernt");

src/nfc.h

@@ -3,6 +3,16 @@
 
 #include <Arduino.h>
 
+typedef enum{
+    NFC_IDLE,
+    NFC_READING,
+    NFC_READ_SUCCESS,
+    NFC_READ_ERROR,
+    NFC_WRITING,
+    NFC_WRITE_SUCCESS,
+    NFC_WRITE_ERROR
+} nfcReaderStateType;
+
 void startNfc();
 void scanRfidTask(void * parameter);
 void startWriteJsonToTag(const char* payload);
@@ -10,7 +20,9 @@ void startWriteJsonToTag(const char* payload);
 extern TaskHandle_t RfidReaderTask;
 extern String nfcJsonData;
 extern String spoolId;
-extern volatile uint8_t hasReadRfidTag;
+extern volatile nfcReaderStateType nfcReaderState;
 extern volatile bool pauseBambuMqttTask;
 
+
+
 #endif

src/ota.cpp

@@ -1,6 +1,10 @@
 #include <Arduino.h>
 #include <website.h>
 #include <commonFS.h>
+#include "scale.h"
+#include "bambu.h"
+#include "nfc.h"
+
 
 // Globale Variablen für Config Backups hinzufügen
 String bambuCredentialsBackup;
@@ -151,6 +155,25 @@ void handleUpdate(AsyncWebServer &server) {
 
     updateHandler->onUpload([](AsyncWebServerRequest *request, String filename,
                              size_t index, uint8_t *data, size_t len, bool final) {
+
+        // Disable all Tasks
+        if (BambuMqttTask != NULL) 
+        {
+            Serial.println("Delete BambuMqttTask");
+            vTaskDelete(BambuMqttTask);
+            BambuMqttTask = NULL;
+        }
+        if (ScaleTask) {
+            Serial.println("Delete ScaleTask");
+            vTaskDelete(ScaleTask);
+            ScaleTask = NULL;
+        }
+        if (RfidReaderTask) {
+            Serial.println("Delete RfidReaderTask");
+            vTaskDelete(RfidReaderTask);
+            RfidReaderTask = NULL;
+        }
+
         if (!index) {
             updateTotalSize = request->contentLength();
             updateWritten = 0;
@@ -159,9 +182,9 @@ void handleUpdate(AsyncWebServer &server) {
             if (isSpiffsUpdate) {
                 // Backup vor dem Update
                 sendUpdateProgress(0, "backup", "Backing up configurations...");
-                delay(200);
+                vTaskDelay(200 / portTICK_PERIOD_MS);
                 backupJsonConfigs();
-                delay(200);
+                vTaskDelay(200 / portTICK_PERIOD_MS);
                 
                 const esp_partition_t *partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_SPIFFS, NULL);
                 if (!partition || !Update.begin(partition->size, U_SPIFFS)) {
@@ -169,14 +192,14 @@ void handleUpdate(AsyncWebServer &server) {
                     return;
                 }
                 sendUpdateProgress(5, "starting", "Starting SPIFFS update...");
-                delay(200);
+                vTaskDelay(200 / portTICK_PERIOD_MS);
             } else {
                 if (!Update.begin(updateTotalSize)) {
                     request->send(400, "application/json", "{\"success\":false,\"message\":\"Update initialization failed\"}");
                     return;
                 }
                 sendUpdateProgress(0, "starting", "Starting firmware update...");
-                delay(200);
+                vTaskDelay(200 / portTICK_PERIOD_MS);
             }
         }
 
@@ -202,7 +225,7 @@ void handleUpdate(AsyncWebServer &server) {
             if (currentProgress != lastProgress && (currentProgress % 10 == 0 || final)) {
                 sendUpdateProgress(currentProgress, "uploading");
                 oledShowMessage("Update: " + String(currentProgress) + "%");
-                delay(50);
+                vTaskDelay(50 / portTICK_PERIOD_MS);
                 lastProgress = currentProgress;
             }
         }

src/scale.cpp

@@ -14,6 +14,7 @@ TaskHandle_t ScaleTask;
 int16_t weight = 0;
 
 uint8_t weigthCouterToApi = 0;
+uint8_t scale_tare_counter = 0;
 bool scaleTareRequest = false;
 uint8_t pauseMainTask = 0;
 uint8_t scaleCalibrated = 1;
@@ -21,8 +22,23 @@ uint8_t scaleCalibrated = 1;
 Preferences preferences;
 const char* NVS_NAMESPACE = "scale";
 const char* NVS_KEY_CALIBRATION = "cal_value";
+const char* NVS_KEY_AUTOTARE = "auto_tare";
+bool autoTare = true;
 
 // ##### Funktionen für Waage #####
+uint8_t setAutoTare(bool autoTareValue) {
+  Serial.print("Set AutoTare to ");
+  Serial.println(autoTareValue);
+  autoTare = autoTareValue;
+
+  // Speichern mit NVS
+  preferences.begin(NVS_NAMESPACE, false); // false = readwrite
+  preferences.putBool(NVS_KEY_AUTOTARE, autoTare);
+  preferences.end();
+
+  return 1;
+}
+
 uint8_t tareScale() {
   Serial.println("Tare scale");
   scale.tare();
@@ -38,11 +54,23 @@ void scale_loop(void * parameter) {
   for(;;) {
     if (scale.is_ready()) 
     {
-      // Waage nochmal Taren, wenn zu lange Abweichung
+      // Waage automatisch Taren, wenn zu lange Abweichung
+      if (autoTare && scale_tare_counter >= 5) 
+      {
+        Serial.println("Auto Tare scale");
+        scale.tare();
+        scale_tare_counter = 0;
+      }
+
+      // Waage manuell Taren
       if (scaleTareRequest == true) 
       {
         Serial.println("Re-Tare scale");
+        oledShowMessage("TARE Scale");
+        vTaskDelay(pdMS_TO_TICKS(1000));
         scale.tare();
+        vTaskDelay(pdMS_TO_TICKS(1000));
+        oledShowWeight(0);
         scaleTareRequest = false;
       }
 
@@ -53,13 +81,20 @@ void scale_loop(void * parameter) {
   }
 }
 
-void start_scale() {
+void start_scale(bool touchSensorConnected) {
   Serial.println("Prüfe Calibration Value");
   float calibrationValue;
 
   // NVS lesen
   preferences.begin(NVS_NAMESPACE, true); // true = readonly
   calibrationValue = preferences.getFloat(NVS_KEY_CALIBRATION, defaultScaleCalibrationValue);
+  
+  // auto Tare
+  // Wenn Touch Sensor verbunden, dann autoTare auf false setzen
+  // Danach prüfen was in NVS gespeichert ist
+  autoTare = (touchSensorConnected) ? false : true;
+  autoTare = preferences.getBool(NVS_KEY_AUTOTARE, autoTare);
+
   preferences.end();
 
   Serial.print("Read Scale Calibration Value ");

src/scale.h

@@ -4,17 +4,19 @@
 #include <Arduino.h>
 #include "HX711.h"
 
-
+uint8_t setAutoTare(bool autoTareValue);
-uint8_t start_scale();
+uint8_t start_scale(bool touchSensorConnected);
 uint8_t calibrate_scale();
 uint8_t tareScale();
 
 extern HX711 scale;
 extern int16_t weight;
 extern uint8_t weigthCouterToApi;
+extern uint8_t scale_tare_counter;
 extern uint8_t scaleTareRequest;
 extern uint8_t pauseMainTask;
 extern uint8_t scaleCalibrated;
+extern bool autoTare;
 
 extern TaskHandle_t ScaleTask;
 

src/website.cpp

@@ -22,7 +22,7 @@ AsyncWebServer server(webserverPort);
 AsyncWebSocket ws("/ws");
 
 uint8_t lastSuccess = 0;
-uint8_t lastHasReadRfidTag = 0;
+nfcReaderStateType lastnfcReaderState = NFC_IDLE;
 
 
 void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventType type, void *arg, uint8_t *data, size_t len) {
@@ -44,13 +44,15 @@ void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventTyp
         JsonDocument doc;
         deserializeJson(doc, message);
 
+        bool spoolmanConnected = (spoolmanApiState != API_INIT);
+
         if (doc["type"] == "heartbeat") {
             // Sende Heartbeat-Antwort
             ws.text(client->id(), "{"
                 "\"type\":\"heartbeat\","
                 "\"freeHeap\":" + String(ESP.getFreeHeap()/1024) + ","
                 "\"bambu_connected\":" + String(bambu_connected) + ","
-                "\"spoolman_connected\":" + String(spoolman_connected) + ""
+                "\"spoolman_connected\":" + String(spoolmanConnected) + ""
                 "}");
         }
 
@@ -73,6 +75,10 @@ void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventTyp
                 success = calibrate_scale();
             }
 
+            if (doc["payload"] == "setAutoTare") {
+                success = setAutoTare(doc["enabled"].as<bool>());
+            }
+
             if (success) {
                 ws.textAll("{\"type\":\"scale\",\"payload\":\"success\"}");
             } else {
@@ -139,34 +145,31 @@ void foundNfcTag(AsyncWebSocketClient *client, uint8_t success) {
 }
 
 void sendNfcData(AsyncWebSocketClient *client) {
-    if (lastHasReadRfidTag == hasReadRfidTag) return;
+    if (lastnfcReaderState == nfcReaderState) return;
-    if (hasReadRfidTag == 0) {
+    // TBD: Why is there no status for reading the tag?
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":{}}");
+    switch(nfcReaderState){
+        case NFC_IDLE:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":{}}");
+            break;
+        case NFC_READ_SUCCESS:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":" + nfcJsonData + "}");
+            break;
+        case NFC_READ_ERROR:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"error\":\"Empty Tag or Data not readable\"}}");
+            break;
+        case NFC_WRITING:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"info\":\"Schreibe Tag...\"}}");
+            break;
+        case NFC_WRITE_SUCCESS:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"info\":\"Tag erfolgreich geschrieben\"}}");
+            break;
+        case NFC_WRITE_ERROR:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"error\":\"Error writing to Tag\"}}");
+            break;
+        case DEFAULT:
+            ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"error\":\"Something went wrong\"}}");
     }
-    else if (hasReadRfidTag == 1) {
+    lastnfcReaderState = nfcReaderState;
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":" + nfcJsonData + "}");
-    }
-    else if (hasReadRfidTag == 2)
-    {
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"error\":\"Empty Tag or Data not readable\"}}");
-    }
-    else if (hasReadRfidTag == 3)
-    {
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"info\":\"Schreibe Tag...\"}}");
-    }
-    else if (hasReadRfidTag == 4)
-    {
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"error\":\"Error writing to Tag\"}}");
-    }
-    else if (hasReadRfidTag == 5)
-    {
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"info\":\"Tag erfolgreich geschrieben\"}}");
-    }
-    else 
-    {
-        ws.textAll("{\"type\":\"nfcData\", \"payload\":{\"error\":\"Something went wrong\"}}");
-    }
-    lastHasReadRfidTag = hasReadRfidTag;
 }
 
 void sendAmsData(AsyncWebSocketClient *client) {
@@ -204,10 +207,14 @@ void setupWebserver(AsyncWebServer &server) {
     // Route für Waage
     server.on("/waage", HTTP_GET, [](AsyncWebServerRequest *request){
         Serial.println("Anfrage für /waage erhalten");
-        AsyncWebServerResponse *response = request->beginResponse(LittleFS, "/waage.html.gz", "text/html");
+        //AsyncWebServerResponse *response = request->beginResponse(LittleFS, "/waage.html.gz", "text/html");
-        response->addHeader("Content-Encoding", "gzip");
+        //response->addHeader("Content-Encoding", "gzip");
-        response->addHeader("Cache-Control", CACHE_CONTROL);
+        //response->addHeader("Cache-Control", CACHE_CONTROL);
-        request->send(response);
+
+        String html = loadHtmlWithHeader("/waage.html");
+        html.replace("{{autoTare}}", (autoTare) ? "checked" : "");
+
+        request->send(200, "text/html", html);
     });
 
     // Route für RFID