commit 496ba9510a7c72482657d7bced6fe1e713172965 Author: Amritanshu Date: Fri Jul 7 09:47:54 2023 +0530 Initial Commit. It is working diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..89cc49c --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +.pio +.vscode/.browse.c_cpp.db* +.vscode/c_cpp_properties.json +.vscode/launch.json +.vscode/ipch diff --git a/.vscode/extensions.json b/.vscode/extensions.json new file mode 100644 index 0000000..080e70d --- /dev/null +++ b/.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" + ] +} diff --git a/include/README b/include/README new file mode 100644 index 0000000..194dcd4 --- /dev/null +++ b/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 diff --git a/lib/README b/lib/README new file mode 100644 index 0000000..6debab1 --- /dev/null +++ b/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 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 +#include + +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 diff --git a/platformio.ini b/platformio.ini new file mode 100644 index 0000000..2856f3a --- /dev/null +++ b/platformio.ini @@ -0,0 +1,17 @@ +; 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_mini] +platform = espressif8266 +board = d1_mini +framework = arduino +lib_deps = + adafruit/DHT sensor library@^1.4.4 + adafruit/Adafruit Unified Sensor@^1.1.9 diff --git a/src/main.cpp b/src/main.cpp new file mode 100644 index 0000000..7acd91a --- /dev/null +++ b/src/main.cpp @@ -0,0 +1,180 @@ +#include +#include // Include the Wi-Fi-Multi library +#include +#include +#include + +// ESP8266WiFiMulti wifiMulti; // Create an instance of the ESP8266WiFiMulti class, called 'wifiMulti' + +// WiFi connect timeout per AP. Increase when connecting takes longer. +// const uint32_t connectTimeoutMs = 5000; + +// Replace with your network credentials +const char* ssid = "Tanshu"; +const char* password = "openwrt15"; + +// Replace with your server's address +const char* serverAddress = "sensors.tanshu.com"; +const int serverPort = 443; + +// Replace with your DHT sensor pin +const int dhtPin = D4; + +// Replace with your device name +const char* deviceName = "s1-orb"; + +// Initialize the DHT sensor +DHT dht(dhtPin, DHT22); + +// Function declaration +void connectToWiFi(); +void sendSensorData(float temperature, float humidity, unsigned long timestamp, const char* device); +void sendBufferedData(); + +// Data buffer +struct SensorData { + float temperature; + float humidity; + unsigned long timestamp; +}; + +const int BUFFER_SIZE = 10; +SensorData buffer[BUFFER_SIZE]; +int bufferIndex = 0; + +unsigned long previousTimestamp = 0; +const unsigned long interval = 30000; + +void setup() { + Serial.begin(9600); + // Serial.setDebugOutput(true); + connectToWiFi(); + + dht.begin(); +} + +void loop() { + unsigned long currentTimestamp = millis(); + + if (currentTimestamp - previousTimestamp >= interval) { + float temperature = dht.readTemperature(); + float humidity = dht.readHumidity(); + + if (isnan(temperature) || isnan(humidity)) { + Serial.println("Failed to read from DHT sensor!"); + return; + } + + Serial.print("Temperature: "); + Serial.print(temperature); + Serial.print(" °C\tHumidity: "); + Serial.print(humidity); + Serial.println(" %"); + + // Buffer the data + buffer[bufferIndex].temperature = temperature; + buffer[bufferIndex].humidity = humidity; + buffer[bufferIndex].timestamp = currentTimestamp; + + // Increment the buffer index + bufferIndex = (bufferIndex + 1) % BUFFER_SIZE; + + // Attempt to send buffered data when connectivity is restored + sendBufferedData(); + + previousTimestamp = currentTimestamp; + } +} + +void connectToWiFi() { + delay(2000); + Serial.println("Starting WiFi Connection"); + + // Set in station mode + // WiFi.mode(WIFI_STA); + + // Register multi WiFi networks + // wifiMulti.addAP("Tanshu", "openwrt15"); + WiFi.setPhyMode(WIFI_PHY_MODE_11G); + WiFi.begin(ssid, password); + + // while (wifiMulti.run() != WL_CONNECTED) { + while (WiFi.status() != WL_CONNECTED) { + delay(500); + Serial.print("."); + } + + Serial.println(""); + Serial.print("Connected to "); + Serial.println(WiFi.SSID()); // Tell us what network we're connected to + Serial.println("IP address: " + WiFi.localIP().toString()); +} + +void sendSensorData(float temperature, float humidity, unsigned long age, const char* device) { + String url = "/upload"; + + WiFiClientSecure client; + client.setInsecure();//skip verification + + if (!client.connect(serverAddress, serverPort)) { + Serial.println("Failed to connect to server!"); + return; + } + + // if (client.verifyCertChain(serverAddress)) { + // Serial.println("Certificate matches!"); + // } else { + // Serial.println("Certificate doesn't match!"); + // } + + // Calculate the length of the payload + String payload = "temp=" + String(temperature) + "&humidity=" + String(humidity) + "&age=" + String(millis() - age) + "&device=" + device; + int payloadLength = payload.length(); + + Serial.println("POST " + url + " HTTP/1.1\r\n" + + "Host: " + String(serverAddress) + "\r\n" + + "Connection: close\r\n" + + "Content-Type: application/x-www-form-urlencoded\r\n" + + "Content-Length: " + String(payloadLength) + "\r\n\r\n" + + payload); + + client.print("POST " + url + " HTTP/1.1\r\n" + + "Host: " + String(serverAddress) + "\r\n" + + "Connection: close\r\n" + + "Content-Type: application/x-www-form-urlencoded\r\n" + + "Content-Length: " + String(payloadLength) + "\r\n\r\n" + + payload); + + while (client.connected()) { + if (client.available()) { + String line = client.readStringUntil('\n'); + Serial.println(line); + } + } + + Serial.println("Sent sensor data to server!"); + + client.stop(); +} + +void sendBufferedData() { + if (WiFi.status() == WL_CONNECTED) { + // Send buffered data if connectivity is restored + for (int dataIndex = bufferIndex - 1; dataIndex >= 0; dataIndex--) { + // Extract temperature, humidity, and timestamp from the buffer + float temperature = buffer[dataIndex].temperature; + float humidity = buffer[dataIndex].humidity; + unsigned long age = buffer[dataIndex].timestamp; + + // Attempt to send the data + // Serial.println("temp: " + String(temperature) + " // humidity: " + String(humidity) + " // age: " + String(millis() - age) + " // device: " + deviceName); + sendSensorData(temperature, humidity, age, deviceName); + + // Wait a short time before sending the next data + delay(100); + } + + // Clear the buffer + bufferIndex = 0; + } +} diff --git a/test/README b/test/README new file mode 100644 index 0000000..9b1e87b --- /dev/null +++ b/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