Initial Commit. It is working

This commit is contained in:
Amritanshu Agrawal 2023-07-07 09:47:54 +05:30
commit 496ba9510a
7 changed files with 308 additions and 0 deletions

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

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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"
]
}

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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

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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

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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: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

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#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h> // Include the Wi-Fi-Multi library
#include <DHT.h>
#include <Wire.h>
#include <WiFiClientSecure.h>
// 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;
}
}

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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