MQTT nun mit PubSub

Grafik etwas angepasst

platformio.ini

@@ -19,5 +19,5 @@ lib_deps =
 	adafruit/Adafruit BME280 Library@^2.2.4
 	lvgl/lvgl@^9.1.0
 	bodmer/TFT_eSPI@^2.5.43
-
+	knolleary/PubSubClient@^2.8
 monitor_speed = 115200

src/grafik.cpp

@@ -31,7 +31,7 @@ void buildarc(ARC arc)
   lv_obj_set_size(arc.arc, arc.size, arc.size);
   lv_arc_set_rotation(arc.arc, 180);
   lv_arc_set_bg_angles(arc.arc, 0, 180);
-  lv_arc_set_value(arc.arc, arc.value);
+  lv_arc_set_value(arc.arc, arc.value+arc.value_offset);
   lv_obj_align(arc.arc, LV_ALIGN_LEFT_MID, arc.x, arc.y);
   lv_obj_remove_style(arc.arc, NULL, LV_PART_KNOB);
 
@@ -55,10 +55,10 @@ void buildarc(ARC arc)
 
   lv_obj_t *value_label = lv_label_create(arc.arc);
   char value[10];
-  sprintf(value, arc.valformat, arc.value);
+  sprintf(value, arc.valformat, arc.value + arc.value_offset);
   // Serial.println(value);
   lv_label_set_text(value_label, value);
-  lv_obj_align(value_label, LV_ALIGN_LEFT_MID, 38 + arc.value_offset, 0);
+  lv_obj_align(value_label, LV_ALIGN_LEFT_MID, 38 + arc.value_xoffset, 0);
   static lv_style_t style_value_label;
   lv_style_init(&style_value_label);
   lv_style_set_text_font(&style_value_label, &lv_font_montserrat_18);
@@ -141,27 +141,6 @@ void lv_create_main_gui(void)
     lv_obj_align(refresh_label, LV_ALIGN_CENTER, 0, -45);
   */
 
-  // Text als Überschrift an die Axen
-  lv_obj_t *feuchte_label = lv_label_create(lv_screen_active());
-  lv_label_set_text(feuchte_label, "Feuchte");
-  lv_obj_align(feuchte_label, LV_ALIGN_RIGHT_MID, -3, 15);
-
-  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
-  static lv_style_t style_feuchte_label;
-  lv_style_init(&style_feuchte_label);
-  lv_style_set_text_font(&style_feuchte_label, &lv_font_montserrat_10);
-  lv_obj_add_style(feuchte_label, &style_feuchte_label, 0);
-
-  lv_obj_t *temp_label = lv_label_create(lv_screen_active());
-  lv_label_set_text(temp_label, "Temperatur");
-  lv_obj_align(temp_label, LV_ALIGN_LEFT_MID, 3, 15);
-
-  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
-  static lv_style_t style_temp_label;
-  lv_style_init(&style_temp_label);
-  lv_style_set_text_font(&style_temp_label, &lv_font_montserrat_10);
-  lv_obj_add_style(temp_label, &style_temp_label, 0);
-
   /*Create an Arc*/
   lv_obj_t *aTemp = lv_arc_create(lv_screen_active());
   arcTemp.arc = aTemp;
@@ -220,7 +199,7 @@ void drawChart()
   // Create a container to display the chart and scale
   lv_obj_t *container_row = lv_obj_create(lv_screen_active());
   lv_obj_set_size(container_row, CONTAINER_WIDTH, CONTAINER_HEIGHT);
-  lv_obj_align(container_row, LV_ALIGN_BOTTOM_MID, 0, 0);
+  lv_obj_align(container_row, LV_ALIGN_BOTTOM_MID, 0, -4);
   // Set the container in a flexbox row layout aligned center
   lv_obj_set_flex_flow(container_row, LV_FLEX_FLOW_ROW);
   lv_obj_set_flex_align(container_row, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
@@ -229,7 +208,7 @@ void drawChart()
   lv_style_set_pad_row(&style_container_row, 0);
   // lv_style_set_bg_color(&style_container_row, lv_palette_lighten(LV_PALETTE_LIGHT_BLUE, 4));
   lv_obj_add_style(container_row, &style_container_row, 0);
-  lv_obj_set_style_border_side(container_row, LV_BORDER_SIDE_BOTTOM, LV_PART_MAIN);
+  lv_obj_set_style_border_side(container_row, LV_BORDER_SIDE_NONE, LV_PART_MAIN);
   lv_obj_set_style_bg_color(container_row, lv_color_hex(BACKGROUND_COLOR), LV_PART_MAIN);
 
   // linke Axe
@@ -335,6 +314,21 @@ void drawChart()
   lv_style_set_text_color(&style_xscale, lv_color_hex(0x0000FF));
   lv_obj_add_style(xscale, &style_xscale, 0);
 
+  // Text als Überschrift an die Axen
+  lv_obj_t *feuchte_label = lv_label_create(lv_screen_active());
+  lv_label_set_text(feuchte_label, "Feuchte");
+  lv_obj_align(feuchte_label, LV_ALIGN_RIGHT_MID, -3, 8);
+
+  lv_obj_t *temp_label = lv_label_create(lv_screen_active());
+  lv_label_set_text(temp_label, "Temperatur");
+  lv_obj_align(temp_label, LV_ALIGN_LEFT_MID, 3, 8);
+
+  // Set font type and font size. More information: https://docs.lvgl.io/master/overview/font.html
+  static lv_style_t style_tf_label;
+  lv_style_init(&style_tf_label);
+  lv_style_set_text_font(&style_tf_label, &lv_font_montserrat_10);
+  lv_obj_add_style(feuchte_label, &style_tf_label, 0);
+  lv_obj_add_style(temp_label, &style_tf_label, 0);
 
   /* ganz unten etwas Info anzeigen */
   // Style dafür
@@ -420,4 +414,18 @@ void show2lines() {
   lv_obj_add_style(line2, &style_line, 0);
 }
 
+void showResetTime(struct tm tinfo) {
+    static lv_style_t style_info_label;
+    lv_style_init(&style_info_label);
+    lv_style_set_text_font(&style_info_label, &lv_font_montserrat_8);
+    lv_style_set_text_color(&style_info_label, LV_COLOR_MAKE(0x40, 0x40, 0x40));
+
+    char date[20];
+    strftime(date, 20, "%d-%m-%Y %H:%M", &tinfo);
+
+    lv_obj_t *resdate_label = lv_label_create(lv_screen_active());
+    lv_label_set_text(resdate_label, date);
+    lv_obj_align(resdate_label, LV_ALIGN_BOTTOM_LEFT, 4, 0);
+    lv_obj_add_style(resdate_label, &style_info_label, LV_PART_MAIN);
+}
 

src/grafik.h

@@ -26,7 +26,8 @@ typedef struct {
     int highvalue;
     int green;
     int yellow;
-    int value_offset;
+    int value_xoffset;
+    float value_offset;
 
 } ARC;
 
@@ -36,8 +37,8 @@ typedef struct {
 
 #define BACKGROUND_COLOR 0xD3F0FF
 #ifdef MAIN
-ARC arcTemp = {NULL, "temp", 40, -6, 110, 30.0, "%.1f°C", "°C", 15, 35, 20, 25, -11};
+ARC arcTemp = {NULL, "temp", 40, -10, 110, 30.0, "%.1f°C", "°C", 15, 35, 20, 25, -11, 0.0};
-ARC arcHum = {NULL, "humi", 170, -6, 110, 60.0, "%.0f%%", "%", 40, 100, 65, 70, 2};
+ARC arcHum = {NULL, "humi", 170, -10, 110, 60.0, "%.0f%%", "%", 40, 100, 65, 70, 2, 0.0};
 lv_obj_t * date_label;
 lv_obj_t * time_label;
 lv_obj_t * ta_label;
@@ -66,6 +67,8 @@ void updatechartData(float value, float value_hum);
 void setAussenDataValues(float val, bool what, struct tm t);
 void showRate(int r);
 void show2lines();
+void showResetTime(struct tm tinfo);
+
 
 
 

src/main.cpp

@@ -75,9 +75,7 @@ void setup() {
   connectToWifi();
   
   // Start MQTT
-  setupMQTT();
+  setup_mqtt();
-  connectToMqtt();
-  Serial.println("MQTT started");
   
   timeinfo = gettheTime(NTPREADTIME);
   showDateTime(timeinfo);
@@ -85,6 +83,7 @@ void setup() {
   bmeReadtimer = millis();
   
   drawChart();
+  showResetTime(timeinfo);
 
 /*
   // Register print function for debugging
@@ -108,15 +107,21 @@ void loop() {
   if (millis() - bmeReadtimer > bmeReadTime) {
     bmeReadtimer = millis();
     bmedata = readBME280();
-    publishMQTTmessage(bmedata.temp, bmedata.hum);
+    doPublish(bmedata.temp+arcTemp.value_offset, bmedata.hum+arcHum.value_offset);
   }
   if (millis() - updatetimer > updateTime) {
     updatetimer = millis();
-    updatechartData(bmedata.temp, bmedata.hum);
+    updatechartData(bmedata.temp+arcTemp.value_offset, bmedata.hum+arcHum.value_offset);
-    setValuetoArc(arcTemp, bmedata.temp);
+    setValuetoArc(arcTemp, bmedata.temp+arcTemp.value_offset);
-    setValuetoArc(arcHum, bmedata.hum);
+    setValuetoArc(arcHum, bmedata.hum+arcHum.value_offset);
   }
 
+ if (!client.connected())
+  {
+    reconnect();
+  }
+  client.loop();
+
   lv_task_handler();  // let the GUI do its work
   lv_tick_inc(5);     // tell LVGL how much time has passed
   delay(5);           // let this time pass

src/main.h

@@ -6,8 +6,8 @@ extern "C" {
   #include "freertos/timers.h"
 }
 
-#define VERSION "1.3.3"
+#define VERSION "1.4.0"
-#define VDATE "2024-07-23"
+#define VDATE "2024-08-19"
 
 //#define MAXREADINGS 224
 #define MAXREADINGS 200

src/mqtt.cpp

@@ -5,79 +5,27 @@
 #include "weifi.h"
 #include "mqtt.h"
 
-void setupMQTT() {
-  mqttReconnectTimer = xTimerCreate("mqttTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0, reinterpret_cast<TimerCallbackFunction_t>(connectToMqtt));
-//  wifiReconnectTimer = xTimerCreate("wifiTimer", pdMS_TO_TICKS(2000), pdFALSE, (void*)0, reinterpret_cast<TimerCallbackFunction_t>(connectToWifi));
-//  WiFi.onEvent(WiFiEvent);
-  mqttClient.onConnect(onMqttConnect);
-  mqttClient.onDisconnect(onMqttDisconnect);
-  mqttClient.onSubscribe(onMqttSubscribe);
-  mqttClient.onUnsubscribe(onMqttUnsubscribe);
-  mqttClient.onMessage(onMqttMessage);
-  mqttClient.setServer(MQTT_HOST, MQTT_PORT);
-  mqttClient.setCredentials(BROKER_USER, BROKER_PASS);
-//  connectToWifi();
-}
-
-void connectToMqtt() {
-  Serial.println("Connecting to MQTT...");
-  mqttClient.connect();
-}
-
-void onMqttConnect(bool sessionPresent) {
-  Serial.println("Connected to MQTT.");
-  /*Serial.print("Session present: ");
-  Serial.println(sessionPresent);*/
-  
-  // Subscribe to topic "message" when it connects to the broker
-  char topic[50];
-  strcpy(topic, MQTT_TOPIC);
-  strcat(topic,"#");
-  Serial.println(topic);
-  uint16_t packetIdSub = mqttClient.subscribe(topic, 2);
-  //Serial.print("Subscribing at QoS 2, packetId: ");
-  //Serial.println(packetIdSub);
-}
-
-void onMqttDisconnect(AsyncMqttClientDisconnectReason reason) {
-  Serial.println("Disconnected from MQTT.");
-  Serial.printf("Wifi-Connected: %d\n", WiFi.isConnected());
-  if (WiFi.isConnected()) {
-    xTimerStart(mqttReconnectTimer, 0);
-  } else {
-    connectToWifi();
-    xTimerStart(mqttReconnectTimer, 0);
-  }
-}
-
-void onMqttSubscribe(uint16_t packetId, uint8_t qos) {
-  /*Serial.println("Subscribe acknowledged.");
-  Serial.print("  packetId: ");
-  Serial.println(packetId);
-  Serial.print("  qos: ");
-  Serial.println(qos);*/
-}
-
-void onMqttUnsubscribe(uint16_t packetId) {
-  /*Serial.println("Unsubscribe acknowledged.");
-  Serial.print("  packetId: ");
-  Serial.println(packetId);*/
-}
 
 JsonDocument doc;
 
-void   parseMQTTmessages(char *topic, String msg) {
+//-----------------------------------------
-  // Parse the JSON message
+// MQTT message arrives
-  DeserializationError error = deserializeJson(doc, msg);
+void onmessage(char *tp, byte *msg, unsigned int length)
+{
+  String topic = String(tp);
+  msg[length] = '\0';
+  String message = String((char *)(msg));
+  Serial.printf("Message arrived: %s %s\n", topic.c_str(), message.c_str());
+  DeserializationError error = deserializeJson(doc, message);
   if (error) {
     Serial.print(F("deserializeJson() failed: "));
     Serial.println(error.c_str());
     return;
   }
-  // Extract values
   bool istemp = true;
   float val = 0.0;
-  if (strcmp(topic, "CYD/set/hm/aussen") == 0) {
+
+  if (topic == "CYD/set/hm/aussen") {
     if(doc.containsKey("temperature")) {
       istemp = true;
       val = doc["temperature"];
@@ -87,7 +35,7 @@ void   parseMQTTmessages(char *topic, String msg) {
       val = doc["humidity"];
     }
     setAussenDataValues(val, istemp, timeinfo);
-  } else if (strcmp(topic, "CYD/set/parameter") == 0) {
+  } else if (topic ==  "CYD/set/parameter") {
     if(doc.containsKey("bmerate")) {
       setBMEreadtime(doc["bmerate"]);
 //      showRate(doc["bmerate"]);
@@ -96,28 +44,65 @@ void   parseMQTTmessages(char *topic, String msg) {
       setBMEreadtime(doc["updaterate"]);
 //      showRate(doc["updaterate"]);
     }
+    if(doc.containsKey("isttemp")) {
+      arcTemp.value_offset = (float)doc["isttemp"] - arcTemp.value;
+    }
+    if(doc.containsKey("isthum")) {
+      arcHum.value_offset = (float)doc["isthum"] - arcHum.value;
+    }
+    Serial.printf("tempoffset: %.1f,  humoffset: %.1f\n", arcTemp.value_offset, arcHum.value_offset);    
   }
 }
 
-void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total) {
+// Connect or reconnect to MQTT and subscribe
-  // Do whatever you want when you receive a message
+void reconnect(void)
-  // Save the message in a variable
+{
-  String received_message;
+  while (!client.connected())
-  for (int i = 0; i < len; i++) {
+  {
-    received_message += (char)payload[i];
+    Serial.print("Reconnecting...");
-  }
+    bool erg = client.connect(CLIENT_ID, MQTT_USER, MQTT_PASSWD);
-  Serial.printf("%s:%s\n", topic, received_message.c_str());
+    Serial.println(erg);
-  // Display the text message on the display receive from the MQTT topic "message"
-  parseMQTTmessages(topic, received_message);
-  }
 
-#define MQTT_PUB_TEMP "CYD/get/bme280"
+    if (!client.connect(CLIENT_ID, MQTT_USER, MQTT_PASSWD))
+    {
+      Serial.print("failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" retrying in 5 seconds");
+      delay(5000);
+    }
+  }
+  Serial.println("Connected");
+  client.subscribe(MQTT_TOPIC "#");
+}
 
-void publishMQTTmessage(float temp, float hum) {
+void doPublish(float temp, float hum) {
-  // Publish an MQTT message on topic esp32/ds18b20/temperature
     char payload[50];
     sprintf(payload, "{\"temperature\":%.1f,\"humidity\":%.1f}", temp, hum);
-    uint16_t packetIdPub1 = mqttClient.publish(MQTT_PUB_TEMP, 1, true, payload);                            
+
-//    Serial.printf("Publishing on topic %s at QoS 1, packetId: ", MQTT_PUB_TEMP);
+    client.publish(MQTT_PUB_TEMP, payload);
-//    Serial.println(packetIdPub1);
+    Serial.printf("Published: %s %s\n", MQTT_PUB_TEMP, payload);
+}
+
+
+// check MQTT in the loop
+void checkMQTT(void) {
+    Serial.println("Try connected ...");
+
+  if (!client.connected())
+  {
+    
+    Serial.println("try to reconnect");
+    reconnect();
   }
+  client.loop();
+}
+
+
+// Setup MQTT client
+void setup_mqtt(void) {
+  Serial.printf("Setup MQTT to broker %s ...\n", MQTT_BROKER);
+  client.setClient(espClient);
+  client.setServer(MQTT_BROKER, MQTT_PORT);
+  client.setCallback(onmessage);
+}
+

src/mqtt.h

@@ -1,33 +1,31 @@
-#ifndef MQTT_H
+#pragma once
-#define MQTT_H
 
 #include <WiFi.h>
-#include <AsyncMqttClient.h>
+#include <PubSubClient.h>
 #include <ArduinoJson.h>
-#include "main.h"
 
-#define MQTT_HOST IPAddress(192,168,178,92) // MQTT BROKER IP ADDRESS
+//#define MQTT_BROKER "rexfue.de"
-//#define MQTT_HOST "example.com"   // MQTT BROKER URL
+#define MQTT_BROKER "nuccy"
 #define MQTT_PORT  1883
-#define BROKER_USER "rxf"
+//#define MQTT_USER "stzuhr"
-#define BROKER_PASS "Tux4S!ech"
+//#define MQTT_PASSWD "74chQCYb"
+#define MQTT_USER "rxf"
+#define MQTT_PASSWD "Tux4S!ech"
 
 #define MQTT_TOPIC "CYD/set/"
+#define MQTT_PUB_TEMP "CYD/get/bme280"
+
+#define CLIENT_ID "ESP32Client7"
 
 #ifdef MQTT
-AsyncMqttClient mqttClient;
+WiFiClient espClient;
+PubSubClient client(espClient);
 #else
-extern AsyncMqttClient mqttClient;
+extern PubSubClient client;
 #endif
 
-void setupMQTT();
-void connectToMqtt();
-void onMqttConnect(bool sessionPresent);
-void onMqttDisconnect(AsyncMqttClientDisconnectReason reason);
-void onMqttSubscribe(uint16_t packetId, uint8_t qos);
-void onMqttUnsubscribe(uint16_t packetId);
-void onMqttMessage(char* topic, char* payload, AsyncMqttClientMessageProperties properties, size_t len, size_t index, size_t total);
-void publishMQTTmessage(float temp, float hum);
 
-
+void reconnect(void);
-#endif
+void doPublish(float temp, float hum);
+void checkMQTT(void);
+void setup_mqtt(void);