bt menu

09_esp_bt_menu/.gitignore

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

09_esp_bt_menu/.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"
+    ]
+}

09_esp_bt_menu/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 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

09_esp_bt_menu/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 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

09_esp_bt_menu/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:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 115200

09_esp_bt_menu/src/main.cpp

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+#include <Arduino.h>
+#include <BluetoothSerial.h>
+#include <esp_system.h>
+
+#define LED_PIN 2
+
+String device_name = "ESP-menu-Skrabanek";
+BluetoothSerial SerialBT;
+
+unsigned long lastStatusTime = 0;
+const unsigned long statusInterval = 10000; //10 vterin
+
+void posliMenu() {
+  SerialBT.println("\n--- HLAVNI MENU ---");
+  SerialBT.println("1 - Zapnout LED");
+  SerialBT.println("2 - Vypnout LED");
+  SerialBT.println("3 - Info o systemu");
+  SerialBT.println("4 - MAC adresa zarizeni");
+  SerialBT.println("m - zobrazit toto menu");
+  SerialBT.println("--------------------");
+}
+
+void setup() {
+  Serial.begin(115200);
+  SerialBT.begin(device_name);
+  pinMode(LED_PIN,OUTPUT);
+  Serial.println("Projekt menu spusten");
+}
+
+void loop() {
+  if(SerialBT.available()) {
+    //získání znaku
+    char volba = SerialBT.read();
+    // X -> Enter -> ['X','\r','\n']
+    //je potřeba čistit tzv.buffer (např. konce řádků)
+    while(SerialBT.available() && (SerialBT.peek() == '\n' || SerialBT.peek() == '\r')){
+      SerialBT.read();
+    }
+    switch(volba){
+      case '1':
+        digitalWrite(LED_PIN,HIGH);
+        SerialBT.println(">> LED zapnuta");
+        break;
+      case '2':
+        digitalWrite(LED_PIN,LOW);
+        SerialBT.println(">> LED vypnuta");
+        break;
+      case '3':
+        SerialBT.print(">> Uptime: ");
+        SerialBT.print(millis()/1000);
+        SerialBT.println(" sekund");
+        break;
+      case '4':
+        uint8_t mac[6];
+        //přeřteme Bluetooth MAC adresu
+        esp_read_mac(mac,ESP_MAC_BT);
+        char macStr[18];
+        sprintf(macStr,"%02X:%02X:%02X:%02X:%02X:%02X",mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);
+        SerialBT.print(">> MAC Adresa(BT): ");
+        SerialBT.println(macStr);
+        break;
+      case 'm':
+      case 'M':
+        posliMenu();
+        break;
+      default:
+        SerialBT.println(">> Neplatná volba. Napiš 'm' pro menu.");
+        break;
+    }
+  }
+  //pravidelné posílání stavu
+  if(millis() - lastStatusTime >= statusInterval){
+    lastStatusTime = millis();
+    if(SerialBT.hasClient()){//pošleme pokud je někdo připojen
+      SerialBT.println("\n[INFO] System bezi v poradku...");
+      Serial.println("\n[INFO] System bezi v poradku...");
+    }
+  }
+}

09_esp_bt_menu/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