Added reciver and moved to sender

reciver/lora_reciver/platformio.ini

@@ -0,0 +1,19 @@
+; 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:reciver]
+platform = espressif32
+board = ttgo-lora32-v1
+framework = arduino
+monitor_speed = 115200
+lib_deps = 
+	thingpulse/ESP8266 and ESP32 OLED driver for SSD1306 displays@^4.5.0
+	sandeepmistry/LoRa@^0.8.0
+	knolleary/PubSubClient@^2.8

reciver/lora_reciver/src/main.cpp

@@ -0,0 +1,200 @@
+// OLED
+#include <Wire.h>  // Only needed for Arduino 1.6.5 and earlier
+#include "SSD1306.h" // alias for `#include "SSD1306Wire.h"`
+
+// LORA
+#include <SPI.h>
+#include <LoRa.h>
+
+// MQTT
+#include <WiFi.h>
+#include <PubSubClient.h>
+
+
+SSD1306 display(0x3c, 4, 15);
+
+//OLED pins to ESP32 GPIOs via this connection:
+//OLED_SDA GPIO4
+//OLED_SCL GPIO15
+//OLED_RST GPIO16
+
+ 
+
+// WIFI_LoRa_32 ports
+
+// GPIO5  SX1278 SCK
+// GPIO19 SX1278 MISO
+// GPIO27 SX1278 MOSI
+// GPIO18 SX1278 CS
+// GPIO14 SX1278 RESET
+// GPIO26 SX1278 IRQ(Interrupt Request)
+
+#define SS 18
+#define RST 14
+#define DI0 26
+// #define BAND 429E6
+
+// LoRa Settings 
+#define BAND 434500000.00
+#define spreadingFactor 9
+// #define SignalBandwidth 62.5E3
+#define SignalBandwidth 31.25E3
+
+#define codingRateDenominator 8
+
+
+
+// WiFi Network Credentials
+const char *ssid =  "SoS IOT";   
+const char *password =  "godisr8n"; 
+
+// MQTTCredentials
+const char *MQTT_USER = "simon";
+const char *MQTT_PASS = "bajsa123";
+
+IPAddress broker(10,0,0,3); // IP address of your MQTT broker eg. 192.168.1.50
+const char *ID = "esp_1";  // Name of our device, must be unique
+const char *TOPIC = "test/sensor";  // Topic to subcribe to
+WiFiClient wclient;
+
+PubSubClient client(wclient); // Setup MQTT client
+
+String data = "";
+
+// Connect to WiFi network
+void setup_wifi() {
+  Serial.print("\nConnecting to ");
+  Serial.println(ssid);
+
+  WiFi.begin(ssid, password); // Connect to network
+
+  while (WiFi.status() != WL_CONNECTED) { // Wait for connection
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.println();
+  Serial.println("WiFi connected");
+  Serial.print("IP address: ");
+  Serial.println(WiFi.localIP());
+}
+
+// Reconnect to client
+void reconnect() {
+  // Loop until we're reconnected
+  while (!client.connected()) {
+    Serial.print("Attempting MQTT connection...");
+    // Attempt to connect
+    if (client.connect(ID,MQTT_USER,MQTT_PASS)) {
+      Serial.println("connected");
+      Serial.print("Publishing to: ");
+      Serial.println(TOPIC);
+      Serial.println('\n');
+
+    } else {
+      Serial.println(" try again in 5 seconds");
+      // Wait 5 seconds before retrying
+      delay(5000);
+    }
+  }
+}
+
+
+
+// ADC? Battery voltage
+// const uint8_t vbatPin = 34;
+// float VBAT;  // battery voltage from ESP32 ADC read
+  
+void setup() {
+  pinMode(16,OUTPUT);
+  digitalWrite(16, LOW); // set GPIO16 low to reset OLED
+  delay(50);
+  digitalWrite(16, HIGH);
+
+  display.init();
+  display.flipScreenVertically();
+  display.setFont(ArialMT_Plain_10);
+  display.setTextAlignment(TEXT_ALIGN_LEFT);
+  
+  Serial.begin(115200);
+  while (!Serial); //if just the the basic function, must connect to a computer
+  delay(1000);
+  
+  Serial.println("LoRa Receiver");
+  display.drawString(5,5,"LoRa Receiver");
+  display.display();
+  SPI.begin(5,19,27,18);
+  LoRa.setPins(SS,RST,DI0);
+
+/*     
+  pinMode(vbatPin, INPUT);
+  VBAT = (120.0/20.0) * (float)(analogRead(vbatPin)) / 1024.0; // LiPo battery voltage in volts
+  Serial.println("Vbat = "); Serial.print(VBAT); Serial.println(" Volts");
+*/
+
+  if (!LoRa.begin(BAND)) {
+    display.drawString(5,25,"Starting LoRa failed!");
+    while (1);
+  }
+  Serial.println("LoRa Initial OK!");
+  
+  Serial.print("LoRa Frequency: ");
+  Serial.println(BAND);
+  
+  Serial.print("LoRa Spreading Factor: ");
+  Serial.println(spreadingFactor);
+  LoRa.setSpreadingFactor(spreadingFactor);
+  
+  Serial.print("LoRa Signal Bandwidth: ");
+  Serial.println(SignalBandwidth);
+  LoRa.setSignalBandwidth(SignalBandwidth);
+
+  LoRa.setCodingRate4(codingRateDenominator);
+  
+  display.drawString(5,25,"LoRa Initializing OK!");
+  display.display();
+  
+  setup_wifi(); // Connect to network
+  client.setServer(broker, 1883);
+}
+
+void loop() {
+  if (!client.connected())  // Reconnect if connection is lost
+  {
+    reconnect();
+  }
+  client.loop();
+  // try to parse packet
+  int packetSize = LoRa.parsePacket();
+  if (packetSize) {
+    // received a packets
+    Serial.print("Received packet. ");
+    
+    display.clear();
+    display.setFont(ArialMT_Plain_16);
+    display.drawString(3, 0, "Received packet ");
+    display.display();
+    
+    // read packet
+    while (LoRa.available()) {
+      data = LoRa.readString();
+      Serial.print(data);
+      display.drawString(20,22, data);
+      display.display();
+    }
+    
+    // print RSSI of packet
+    Serial.print(" with RSSI ");
+    Serial.println(LoRa.packetRssi());
+    Serial.print(" with SNR ");
+    Serial.println(LoRa.packetSnr());
+    // display.drawString(0, 45, "RSSI: ");
+    // display.drawString(50, 45, (String)LoRa.packetRssi());
+    
+    display.drawString(0, 45, (String)LoRa.packetRssi() + "dB (" + (String)LoRa.packetSnr() +"dB)");
+        
+    display.display();
+    client.publish(TOPIC, data.c_str() );
+    Serial.println((String)TOPIC + " => " + data  + ";");
+  }
+}

sender/.gitignore

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

sender/.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"
+    ]
+}

sender/README.md

@@ -5,3 +5,8 @@ https://www.banggood.com/2Pcs-LILYGO-TTGO-433-or-470MHz-SX1278-ESP32-LoRa-0_96-I
 #### PINS
 ![alt text](doc/board_pins.webp)
 
+### Information
+
+Example of lora and oled:
+https://hackaday.io/project/27791-esp32-lora-oled-module#j-discussions-title
+

sender/include/README

@@ -0,0 +1,39 @@
+
+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

sender/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 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

sender/src/main.cpp

@@ -35,6 +35,10 @@ SSD1306 display(0x3c, 4, 15);
 #define preambleLength 8
 #define codingRateDenominator 8
 
+
+
+
+
 int counter = 0;
 
 void setup() {

sender/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