done sqlite intro

12_esp_sken/src/main.cpp

@@ -12,8 +12,9 @@ void scanNetwork() {
   int found = 0;
   for (int i = 1; i < 255; i++){
     IPAddress target(ip[0],ip[1],ip[2],i);
+    Serial.println(target.toString().c_str());
     WiFiClient client;
-    if(client.connect(target,80,60)){
+    if(client.connect(target,80,150)){
       found++;
       Serial.printf("\n + %s",target.toString().c_str());
       if(target == ip) Serial.print("<< JA");

13_sqlite_python/02_serial_to_sqlite.py

@@ -0,0 +1,74 @@
+import sqlite3
+import serial
+from datetime import datetime
+
+#Globalní proměnné
+PORT = "COM4" #vždy zkontorlovat COM port přes Platformio->Devices
+BAUDRATE = 115200
+DB_FILE = "iot_data.sqlite"
+
+#Připojení k databázi
+conn = sqlite3.connect("iot_data.sqlite")
+cursor = conn.cursor()
+
+cursor.execute("""
+    CREATE TABLE IF NOT EXISTS mereni (
+        id  INTEGER PRIMARY KEY AUTOINCREMENT,
+        cas TEXT NOT NULL,
+        teplota REAL NOT NULL,
+        vlhkost REAL NOT NULL           
+    )
+""")
+conn.commit()
+
+#připojení k seriovému portu
+ser = serial.Serial(PORT,BAUDRATE,timeout=2)
+print(f"Připojeno na {PORT}@{BAUDRATE} baud")
+print("Čekám na data z ESP32... (Ctrl+C pro ukončení)")
+
+pocet_mereni = 0
+
+try:
+    while True:
+        line = ser.readline().decode("utf-8").strip()
+        if not line:
+            continue
+        #parsování formátu
+        try:
+            #format: teplota:XX.X,vlhkost:XX.X
+            casti = line.split(",")
+            teplota = float(casti[0].split(":")[1])
+            vlhkost = float(casti[1].split(":")[1])
+        except (IndexError, ValueError):
+            print(f"Neplatný formát: {line}")
+            continue
+        #uložení do databaze
+        cas = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+        cursor.execute(
+            "INSERT INTO mereni (cas, teplota, vlhkost) VALUES (?, ?, ?)",
+            (cas, teplota, vlhkost)
+        )
+        conn.commit()
+
+        pocet_mereni += 1
+        print(f"[{pocet_mereni}] {cas} | Teplota:{teplota}°C | Vlhkost: {vlhkost}")
+
+        #po 20 měření zobrazit statistiky
+        if pocet_mereni % 20 == 0:
+            print(f"--Statistiky po {pocet_mereni} měřeních--")
+            cursor.execute("SELECT AVG(teplota) FROM mereni")
+            print(f"Průměrná teplota: {cursor.fetchone()[0]:.1f}°C")
+            cursor.execute("SELECT MAX(teplota) FROM mereni")
+            print(f"Maximální teplota: {cursor.fetchone()[0]:.1f}°C")
+            cursor.execute("SELECT MIN(teplota) FROM mereni")
+            print(f"Minimální teplota: {cursor.fetchone()[0]:.1f}°C")
+            cursor.execute("SELECT COUNT(*) FROM mereni")
+            print(f"Celkem záznamů: {cursor.fetchone()[0]}")
+            print()
+
+except KeyboardInterrupt:
+    print("\nUkončeno uživatelem")
+finally:
+    ser.close()
+    conn.close()
+    print(f"Uloženo {pocet_mereni} měření do {DB_FILE}")

13a_esp32_dht11_serial_print/.gitignore

@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

13a_esp32_dht11_serial_print/.vscode/extensions.json

@@ -0,0 +1,10 @@
+{
+    // 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"
+    ]
+}

13a_esp32_dht11_serial_print/include/README

@@ -0,0 +1,37 @@
+
+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 convention is to give header files names that end with `.h'.
+
+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

13a_esp32_dht11_serial_print/lib/README

@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into the executable file.
+
+The source code of each library should be placed in a separate directory
+("lib/your_library_name/[Code]").
+
+For example, see the structure of the following example libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional. for 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
+
+Example contents of `src/main.c` using Foo and Bar:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+The PlatformIO Library Dependency Finder will find automatically dependent
+libraries by scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html

13a_esp32_dht11_serial_print/platformio.ini

@@ -0,0 +1,25 @@
+; 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:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 115200
+lib_deps = markruys/DHT@^1.0.0 ;^ = ALT + 94
+
+
+[env:esp32-s3]
+platform = espressif32
+board = esp32-s3-devkitc-1
+framework = arduino
+monitor_speed = 115200
+lib_deps = markruys/DHT@^1.0.0
+

13a_esp32_dht11_serial_print/src/main.cpp

@@ -0,0 +1,47 @@
+#define POUZIT_DHT11 true
+#include <Arduino.h>
+
+#if POUZIT_DHT11
+  #include <DHT.h>
+  #define DHTPIN 36
+  DHT dht;
+#endif
+
+float teplota = 22.0;
+float vlhkost = 45.0;
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+  #if POUZIT_DHT11
+    dht.setup(DHTPIN);
+    Serial.println("DHT11 seznzor incializovan");
+  #else
+    Serial.println("Simulace dat (bez senzoru)");
+  #endif
+  Serial.println("Formát: teplota:XX.X,vlhkost:YY.Y");
+}
+
+void loop() {
+  #if POUZIT_DHT11
+    //realný senzor
+    delay(dht.getMinimumSamplingPeriod());
+    teplota = dht.getTemperature();
+    vlhkost = dht.getHumidity();
+
+    if(dht.getStatus() != DHT::ERROR_NONE){
+      Serial.print("chyba senzoru: ");
+      Serial.println(dht.getStatusString());
+      delay(2000);
+      return;
+    }
+  #else
+    //simulace
+    teplota = 22.0 + random(-50,50)/10.0;
+    vlhkost = 45.0 + random(-100,100)/10.0;
+    delay(2000);
+  #endif 
+  Serial.print("teplota:");
+  Serial.print(teplota,1);
+  Serial.print(",vlhkost:");
+  Serial.println(vlhkost,1);
+}

13a_esp32_dht11_serial_print/test/README

@@ -0,0 +1,11 @@
+
+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