ESP32.ino

Bouncing_ball.cpp

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+#include <SPI.h>
+#include <TFT_eSPI.h>
+
+int pot;
+float x, y, bin, b;
+
+TFT_eSPI tft = TFT_eSPI();
+
+void setup() {
+
+  Serial.begin(115200);
+  Serial.println("\n\n TFT_eSP Starting");
+
+  tft.init();
+  tft.setRotation(0); //0 = 0°; 1 = 90°; 2 = 180° clockwise
+
+  x = 0.0;
+  y = 12.0; //Starts at (0,12), avoiding top border
+  bin = 1.0;
+  b = 0.5; // Y changes by +/-0.5
+
+}
+
+void loop() { //Comments for debugging
+
+  tft.fillScreen(0x000000);
+  tft.fillCircle(x, y, 10, 0xFFFFFF); // position in x, position in y, radius, colour
+
+  if (x == 228){
+    bin = -1;
+    //Serial.println("\nSubtraindo x");
+  }else if (x == 12){
+    bin = 1;
+    //Serial.print("\n Somando x");
+  }
+  x += bin;
+
+  if (y == 268){
+    b = -0.5;
+    //Serial.print("\nSubtraindo y");
+  }else if (y == 12){
+    b = 0.5;
+    //Serial.println("\n Somando y");
+  }
+  y += b;
+
+  /*Serial.print("x = ");
+  Serial.println(x);
+  Serial.print("\n");
+  Serial.print("y = ");
+  Serial.print(y);*/
+  delay(100);
+}

ESP32.ino

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+#include <Arduino.h>
+#include <WiFi.h>
+#include <PubSubClient.h>
+
+//Digital Inputs
+#define sPin 22 //Sensor
+#define aPin 4 //Analogic
+#define magPin 21 //Magnetic
+
+//Digital Outputs
+#define pulsePin 15
+#define lockPin 2
+
+//ID MQTT
+#define pubMag "MAGS"
+#define subLock "DOOR"
+#define TOPIC_PUBLISH "HALLWAY"
+#define TOPIC_SUBSCRIBE "LOCK"
+
+WiFiClient wifiClient;
+PubSubClient MQTT(wifiClient);
+PubSubClient MQTT2(wifiClient);
+
+//Consts
+const char* ssid = "LIEC_119";
+const char* pass = "********";
+const char* broker = "public.mqtthq.com";
+int port = 1883;
+int state, magnetic;
+
+void connectWiFi();
+void connectMQTT();
+void keepConnections();
+void receivePacket(char* topic, byte* payload, unsigned int length);
+
+void setup() {
+  Serial.begin(9600);
+  pinMode(pulsePin, OUTPUT);
+  pinMode(magPin, INPUT_PULLUP);
+  digitalWrite(lockPin, OUTPUT);
+
+  connectWiFi();
+
+  MQTT.setServer(broker, port);
+  MQTT2.setServer(broker, port);
+  MQTT2.setCallback(receivePacket);
+}
+
+void connectWiFi(){
+  Serial.println("Connecting to");
+  Serial.print(ssid);
+  Serial.println("...");
+
+  WiFi.begin(ssid, pass);
+
+  Serial.print("\nConnecting to ");
+  Serial.print(ssid);
+  Serial.print(".");
+
+  while(WiFi.status() != WL_CONNECTED){
+  delay(500);
+  Serial.print("...");
+  }
+  if (WiFi.status() == WL_CONNECTED){
+    Serial.print("\nConnected to ");
+    Serial.print(WiFi.localIP());
+    return;
+  }
+
+}
+void connectMQTT(){
+  if (MQTT.connected()){
+    return;
+  }
+  while (!MQTT.connected()){
+    Serial.print("\nConnecting to ");
+    Serial.print(broker);
+    if (MQTT.connect(pubMag)){
+      Serial.print("\nConnected to Broker for pubMag.");
+      magnetic = digitalRead(magPin);
+        if (magnetic == HIGH){
+          MQTT.publish(TOPIC_PUBLISH, "1");
+          Serial.print("\nPorta Aberta");
+          delay(3000);
+
+        } else if (magnetic == LOW) {
+            MQTT.publish(TOPIC_PUBLISH, "0");
+            Serial.print("\nPorta Fechada");
+            delay(3000);
+        } 
+      break;
+    }
+    else if(!MQTT.connected()) {
+      Serial.print("\nCould not connect to pubMag. New attempt in 3 seconds.");
+      delay(3000);
+    }
+  }
+}
+void connectMQTT2(){
+  if (MQTT2.connected()){
+    return;
+  }
+  while (!MQTT2.connected()){
+    Serial.print("\nConnecting to ");
+    Serial.print(broker);
+    if (MQTT2.connect(subLock)){
+      Serial.print("\nConnected to Broker for subLock.");
+      MQTT2.subscribe(TOPIC_SUBSCRIBE);
+      if (MQTT.connected()){
+        magnetic = digitalRead(magPin);
+          if (magnetic == HIGH){
+            MQTT.publish(TOPIC_PUBLISH, "1");
+            Serial.print("\nPorta Aberta");
+            delay(3000);
+
+          } else if (magnetic == LOW) {
+              MQTT.publish(TOPIC_PUBLISH, "0");
+              Serial.print("\nPorta Fechada");
+              delay(3000);
+          } 
+      }
+      if (MQTT2.connected()){
+        break;
+      }
+    }
+    else if(!MQTT2.connected()) {
+      Serial.print("\nCould not connect to sublock. New attempt in 3 seconds.");
+      delay(3000);
+    }
+  }
+}
+void pulse(){
+    digitalWrite(pulsePin, HIGH);
+    state = HIGH;
+    delay(500);
+    if (state == HIGH){
+      digitalWrite(pulsePin, LOW);
+      state = HIGH;
+      delay(3000);
+    }
+}
+
+void keepConnections(){
+  if(!MQTT.connected()){
+      connectMQTT();
+  }
+  if(!MQTT2.connected()){
+    connectMQTT2();
+  }
+  if(WiFi.status() != WL_CONNECTED){
+    connectWiFi();
+  }
+}
+void receivePacket(char* topic, byte* payload, unsigned int length){
+  String msg;
+
+  for(int i = 0; i < length; i++){
+    char c = (char)payload[i];
+    msg += c;
+  }
+  if (msg == "1"){
+    pulse();
+    Serial.print("\nMessage Received '1'");
+
+  }
+}
+
+void magSensor(){
+  magnetic = digitalRead(magPin);
+
+  if (magnetic == HIGH){
+    MQTT.publish(TOPIC_PUBLISH, "1");
+    Serial.print("\nPorta Aberta");
+    delay(3000);
+
+  } else if (magnetic == LOW) {
+    MQTT.publish(TOPIC_PUBLISH, "0");
+    Serial.print("\nPorta Fechada");
+    delay(3000);
+  }
+}
+
+void loop() {
+  magSensor();  
+  keepConnections();
+  MQTT.loop();
+  MQTT2.loop();
+}

Module 01 - ESP32/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

Module 01 - ESP32/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 a 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

Module 01 - ESP32/platformio.ini

@@ -0,0 +1,18 @@
+; 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:nodemcu-32s]
+platform = espressif32
+board = nodemcu-32s
+framework = arduino
+lib_deps = 
+	miguelbalboa/MFRC522@^1.4.10
+	mbed-jackb/EEPROM@0.0.0+sha.b90c5754d8db
+	ESPNow