2024-09-2705

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.vscode/extensions.json

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+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

include/README

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+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the usual convention is to give header files names that end with `.h'.
+It is most portable to use only letters, digits, dashes, and underscores in
+header file names, and at most one dot.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html

lib/README

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+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+and a contents of `src/main.c`:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:d1]
+platform = espressif8266
+board = d1
+framework = arduino
+monitor_filters = time
+
+
+lib_deps =
+    knolleary/PubSubClient @ 2.8
+    # RECOMMENDED
+    # Accept new functionality in a backwards compatible manner and patches
+    adafruit/Adafruit NeoPixel @ ^1.12.3
+
+    # Accept only backwards compatible bug fixes
+    # (any version with the same major and minor versions, and an equal or greater patch version)
+    adafruit/Adafruit NeoPixel @ ~1.12.3
+
+    # The exact version
+    adafruit/Adafruit NeoPixel @ 1.12.3

src/main.cpp

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+#include <Arduino.h>
+
+#include <FS.h>                   //this needs to be first, or it all crashes and burns...
+#include <ESP8266WiFi.h>
+#include "SoftwareSerial.h"
+#include <Adafruit_NeoPixel.h>
+#define CO2Min 400
+//#define CO2_WARN_1 650
+//#define CO2_WARN_2 950
+#define CO2_WARN_3 1250
+#define AUF_CO2_WARN_3 95       // CO2_WARN_3 - CO2Min 400 / 9
+#define CO2_WARN_4 1500
+#define AUF_CO2_WARN_4 28       // CO2_WARN_4 - CO2_WARN_3 / 9
+#define CO2_CRITICAL_PPM 1850
+#define AUF_CO2_WARN_5 39       // CO2_CRITICAL_PPM - CO2_WARN_4 / 9
+
+#define KORR 2500000 -610 -48            // Für Zeitschleife.
+
+#define BUILTIN_LED D4
+#define WLAN_ON
+
+#define HF_PIN D2
+
+#define TEST
+#define MaxErrCount 30
+
+#include <ESP8266WiFi.h>          //https://github.com/esp8266/Arduino
+#include <PubSubClient.h>
+void reconnect();
+void setup_wifi();
+
+WiFiClient espClient;
+PubSubClient client(espClient);
+SoftwareSerial swSer1;
+
+// Which pin on the Arduino is connected to the NeoPixels?
+#define PIN D7 // On Trinket or Gemma, suggest changing this to 1
+
+// How many NeoPixels are attached to the Arduino?
+#define NUMPIXELS 12 // Popular NeoPixel ring size
+
+Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_RGB + NEO_KHZ800);
+
+const unsigned long interval  = (1 * 60000000) + KORR; // Minuten * Mikrosekunden für Sleep Mode
+const unsigned long stoerung  = 2 * 60000000; // Minuten * Mikrosekunden für Sleep Mode
+int CO2Wert;              // CO2 Messwert in ppm
+
+int HF_Flag = 0;
+
+const char* mqtt_server = "192.168.127.193";
+
+long deviceId;
+char sID[16];
+char clientName[30];
+unsigned long startTime;
+unsigned long endTime;
+char topic[100];
+char topicWert[20];
+char msg[20];
+
+#ifdef TEST
+const char* ssid = "St.-Peters-Gasse";
+const char* password = "1952994784599317";
+IPAddress ip( 192, 168, 127, 213 );
+IPAddress gateway( 192, 168, 127, 1 );
+IPAddress subnet( 255, 255, 255, 0 );
+IPAddress dns(192, 168, 127, 1); // DNS-Server
+#else
+const char* ssid = "WLAN-7QHHAK";
+const char* password = "3557919930817586";
+IPAddress ip( 192, 168, 127, 212 );
+IPAddress gateway( 192, 168, 127, 1 );
+IPAddress subnet( 255, 255, 255, 0 );
+IPAddress dns(192, 168, 127, 1); // DNS-Server
+#endif
+
+void reconnect() {
+  unsigned long Pause = 0;
+  unsigned long ErrLoop = 0;
+  sprintf(clientName, "%s%s", "ESP8266Client", sID );
+  // Loop until we're reconnected
+  while (!client.connected()) {
+    Serial.print("Attempting MQTT connection...");
+    // Attempt to connect
+    // If you do not want to use a username and password, change next line to
+    // if (client.connect("ESP8266Client")) {
+    //if (client.connect(clientName, mqtt_user, mqtt_pass)) {
+    if (client.connect(clientName)) {
+      Serial.println("connected");
+//      blink.detach();
+      digitalWrite(LED_BUILTIN, HIGH);
+      sprintf(topic, "%s%d%s", "hjk/devices/", deviceId, "/telemetry/ID" );
+      client.publish(topic, sID);
+    } else {
+      ErrLoop ++;
+//      blink.attach(0.8, flip);
+      Serial.print("failed, rc=");
+      Serial.print(client.state());
+      Serial.println(" try again in 5 seconds");
+      // Wait 5 seconds before retrying
+      delay(5000);
+      if (ErrLoop >= 10){
+        // ---------------------------------
+        // Status ändern !!! -3
+        //datenSave(-3);
+        // ---------------------------------
+		pixels.setPixelColor(0, pixels.Color(0, 0, 31)); // blue
+		pixels.show();
+        endTime = millis();
+        Pause = stoerung -((endTime - startTime) * 1000);      // Pause ca. 2 Minuten
+        Serial.print("Ich gehe für "); Serial.print(Pause); Serial.println( " µs schlafen.");
+        ESP.deepSleep(Pause, WAKE_RF_DISABLED); // Pause  
+        delay(500);   
+      }
+    }
+  }
+}
+
+void setup_wifi() {
+
+  long ErrCount = 0;
+
+  delay(10);
+  // We start by connecting to a WiFi network
+  Serial.println();
+  Serial.print("Connecting to ");
+  Serial.print(ssid);
+  Serial.print(" ");
+
+  WiFi.forceSleepWake();
+  delay( 1 );
+  WiFi.persistent( false );
+  WiFi.mode( WIFI_STA );
+  WiFi.config( ip, dns, gateway, subnet );
+  //WiFi.begin( WLAN_SSID, WLAN_PASSWD );
+
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+    ErrCount ++;
+    if (ErrCount >= MaxErrCount){
+      // ---------------------------------
+      // Status ändern !!! -1
+      //datenSave(-1);
+      // ---------------------------------
+      pixels.clear();
+      pixels.setPixelColor(0, pixels.Color(0, 0, 31)); // blue
+      pixels.setPixelColor(1, pixels.Color(0, 0, 31)); // blue
+      pixels.setPixelColor(11, pixels.Color(0, 0, 31)); // blue
+      pixels.show();
+      endTime = millis();
+      unsigned long Pause = stoerung -((endTime - startTime) * 1000); // Pause
+      ESP.deepSleep(Pause); // Pause  
+      delay(100);
+      }
+    }
+  Serial.println(" WiFi connected");
+  Serial.print("IP address: \t");
+  Serial.println(WiFi.localIP());
+} 
+int readCO2() {
+  byte cmd[9] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79};
+  char antwort[9];
+  swSer1.write(cmd,9);
+  if(swSer1.available()) {
+    swSer1.readBytes(antwort, 9);
+  }
+  if (antwort[0] != 0xFF) return -1;
+  if (antwort[1] != 0x86) return -2;
+  int antwortHigh = (int) antwort[2]; // CO2 High Byte
+  int antwortLow = (int) antwort[3];  // CO2 Low Byte
+  int ppm = (256 * antwortHigh) + antwortLow;
+  return ppm; 
+}
+
+void setup() {
+  startTime = millis();
+  WiFi.mode( WIFI_OFF );
+  WiFi.forceSleepBegin();
+  delay( 10 );
+  pinMode(HF_PIN, INPUT_PULLUP);
+  Serial.begin(115200);
+  Serial.println("\n\n\nCO2 Tester");
+  swSer1.begin(9600, SWSERIAL_8N1, D5, D6, false, 256);
+  pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
+  pixels.setBrightness(31);
+  pinMode(BUILTIN_LED, OUTPUT);     // Initialize the BUILTIN_LED pin as an output
+  digitalWrite(BUILTIN_LED, LOW);
+  HF_Flag = digitalRead(HF_PIN);
+  Serial.println(); Serial.println(); Serial.println();
+  Serial.print("HF_Flag = "); Serial.println(HF_Flag);
+#ifdef WLAN_ON
+  if (HF_Flag == 1){
+    setup_wifi();
+  }
+#endif
+  digitalWrite(BUILTIN_LED, HIGH);
+  deviceId = ESP.getChipId();
+  sprintf(sID, "%010d", deviceId);
+  Serial.print("ID: \t\t"); Serial.println(deviceId);
+  client.setServer(mqtt_server, 1883);
+}
+
+
+void loop(){
+  unsigned long Pause = 0;
+  CO2Wert = -1;
+  int Wert1;
+#ifdef WLAN_ON
+  if (HF_Flag == 1){
+    if (!client.connected()) {
+      reconnect();
+    }
+    client.loop();
+  }
+#endif
+  
+  while (CO2Wert < 0) {
+    CO2Wert = readCO2();                // MH-Z19 CO2 Sensor lesen
+    delay(100);
+  }
+  Serial.print(CO2Wert); Serial.print(" ppm");
+  pixels.clear();
+  if (CO2Wert < CO2_WARN_3){
+    Wert1 = (CO2Wert - CO2Min) / AUF_CO2_WARN_3;
+    if (Wert1 < 1){
+      Wert1 = 0;
+    }
+    Serial.print("\tStufe 1\n ");
+    Serial.print("Wert1 "); Serial.print(Wert1); Serial.println(" ");
+    for(int i = 2; i < (11 - Wert1); i++){
+      pixels.setPixelColor(i, pixels.Color(63, 0, 0)); // grün
+    }
+  }
+  else if (CO2Wert <  CO2_WARN_4){
+    Wert1 = (CO2Wert - CO2_WARN_3) / AUF_CO2_WARN_4;
+    if (Wert1 < 1){
+      Wert1 = 0;
+    }
+    Serial.print("\tStufe 2\n ");
+    Serial.print("Wert1 "); Serial.print(Wert1); Serial.println(" ");
+    for(int i = 2; i < (11 - Wert1); i++){
+      pixels.setPixelColor(i, pixels.Color(27, 63, 0)); // gelb
+    }
+  }
+  else if (CO2Wert < CO2_CRITICAL_PPM){
+    Wert1 = (CO2Wert - CO2_WARN_4) / AUF_CO2_WARN_5;
+    if (Wert1 < 1){
+      Wert1 = 0;
+    }
+    Serial.print("\tStufe 3\n ");
+    Serial.print("Wert1 "); Serial.print(Wert1); Serial.println(" ");
+    for(int i=(2+Wert1); i > 1; i--){ //  ANZEIGE von Minium nach Max
+      pixels.setPixelColor(i, pixels.Color(0, 63, 0)); // rot
+    }
+  }
+  else {
+    Serial.print("\tStufe 4\n ");
+    for(int i = 0; i < 13; i++){  // Alle LEDs ansteuern
+      pixels.setPixelColor(i, pixels.Color(0, 255, 0)); // rot
+    }
+  }
+  pixels.show();
+  itoa(CO2Wert, msg, 10);
+  sprintf(topic, "%s%d%s", "hjk/devices/", deviceId, "/telemetry/co2" );
+  client.publish(topic, msg, true);
+  delay(500);
+  endTime = millis();
+  Pause = interval -((endTime - startTime) * 1000); // Pause
+  ESP.deepSleep(Pause, WAKE_RF_DISABLED); // Pause
+  delay(500);
+}

test/README

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+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html