Merge branch 'main' of https://gitlab.fdmci.hva.nl/propedeuse-hbo-ict/onderwijs/2023-2024/out-a-se-ti/blok-3/qaajeeqiinii59
This commit is contained in:
18
arduino/node-code/node-code-final/nodeCode.cpp
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18
arduino/node-code/node-code-final/nodeCode.cpp
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#include "arduino.h"
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#include "nodeCodeHeader.h"
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nodeReadings::nodeReadings() {
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}
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void nodeReadings::resetValues() {
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counter = 0;
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eCO2 = 0;
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TVOC = 0;
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temperature = 0;
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humidity = 0;
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currentMillis = 0;
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lastMillis = 0;
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errorSGP30 = false;
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errorDHT11 = false;
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noise = false;
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}
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arduino/node-code/node-code-final/nodeCodeFinal.ino
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arduino/node-code/node-code-final/nodeCodeFinal.ino
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#include <nodeCodeHeader.h>
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nodeReadings esp32Node();
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//////////////////////////////////
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// Sietse Jonker & Dano van den Bosch
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// 28/02/2024
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// define pins on esp32
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#define MICPIN 6
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#define DHTPIN 7
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#define SCL 9
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#define SDA 8
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#define DHTTYPE DHT11
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#define SCREEN_WIDTH 128
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#define SCREEN_HEIGHT 64
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#define i2c_adress 0x3c
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#define USE_SERIAL Serial
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// define node identification number
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#define nodeIdentificationNumber 1
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// make new objects
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Adafruit_SH1106G display = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);
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DHT dht(DHTPIN, DHTTYPE);
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WiFiMulti WiFiMulti;
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Adafruit_SGP30 sgp;
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WebSocketsClient webSocket;
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// define variables
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uint16_t TVOC_base, eCO2_base;
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uint16_t counter = 0;
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uint16_t eCO2 = 0;
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uint16_t TVOC = 0;
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uint16_t interval = 5000;
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float temperature = 0;
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float humidity = 0;
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unsigned long currentMillis;
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unsigned long lastMillis;
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bool errorSGP30 = false;
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bool errorDHT11 = false;
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bool noise = false;
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// hexdump function for websockets binary handler
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void hexdump(const void *mem, uint32_t len, uint8_t cols = 16) {
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const uint8_t* src = (const uint8_t*) mem;
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USE_SERIAL.printf("\n[HEXDUMP] Address: 0x%08X len: 0x%X (%d)", (ptrdiff_t)src, len, len);
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for(uint32_t i = 0; i < len; i++) {
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if(i % cols == 0) {
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USE_SERIAL.printf("\n[0x%08X] 0x%08X: ", (ptrdiff_t)src, i);
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}
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USE_SERIAL.printf("%02X ", *src);
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src++;
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}
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USE_SERIAL.printf("\n");
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}
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// handler for websocket events
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void webSocketEvent(WStype_t type, uint8_t * payload, size_t length) {
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switch(type) {
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case WStype_DISCONNECTED:
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USE_SERIAL.printf("[WSc] Disconnected!\n");
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break;
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case WStype_CONNECTED:
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USE_SERIAL.printf("[WSc] Connected to url: %s\n", payload);
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// send message to server when Connected
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webSocket.sendTXT("{\"message\": \"Connected\"}");
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break;
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case WStype_TEXT:
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// USE_SERIAL.printf("[WSc] get text: %s\n", payload);
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// send message to server
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// webSocket.sendTXT("message here");
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break;
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case WStype_BIN:
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// USE_SERIAL.printf("[WSc] get binary length: %u\n", length);
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hexdump(payload, length);
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// send data to server
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// webSocket.sendBIN(payload, length);
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break;
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case WStype_ERROR:
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case WStype_FRAGMENT_TEXT_START:
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case WStype_FRAGMENT_BIN_START:
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case WStype_FRAGMENT:
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case WStype_FRAGMENT_FIN:
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break;
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}
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}
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// special function to setup websocket
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void websocketSetup(){
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WiFiMulti.addAP("iotroam", "vbK9gbDBIB");
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WiFiMulti.addAP("LansanKPN-boven", "19sander71vlieland14");
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while(WiFiMulti.run() != WL_CONNECTED) {
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delay(100);
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}
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// server address, port and URL
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webSocket.begin("145.92.8.114", 80, "/ws");
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// event handler
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webSocket.onEvent(webSocketEvent);
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// try ever 500 again if connection has failed
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webSocket.setReconnectInterval(500);
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}
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// fucntion to reset the values if needed
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void resetValues() {
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TVOC_base;
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eCO2_base;
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counter = 0;
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temperature = 0;
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humidity = 0;
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eCO2 = 0;
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TVOC = 0;
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noise = false;
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lastMillis = 0;
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currentMillis = 0;
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}
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// function to check for errors in sensors
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bool checkForError(){
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if (!sgp.IAQmeasure()) {
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Serial.println("SGP30: BAD");
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errorSGP30 = true;
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} else {
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Serial.println("SGP30: OK");
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errorSGP30 = false;
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}
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if (isnan(temperature) || isnan(humidity)){
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Serial.println("DHT11: BAD");
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errorDHT11 = true;
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} else {
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Serial.println("DHT11: OK");
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errorDHT11 = false;
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}
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return false;
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}
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// function to update when interval is met (see intervalCounter variable)
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void update(){
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// display sensordata on oled screen
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displayData();
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// webSocket.sendTXT("{\"Temp\":\"" + String(temperature) + "\",\"Humi\":\"" + String(humidity) + "\",\"eCO2\":\"" + String(sgp.eCO2) + "\",\"TVOC\":\"" + String(sgp.TVOC) + "\"}");
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webSocket.sendTXT("{\"node\": \"" + String(nodeIdentificationNumber) + "\", \"Temp\":\"" + String(temperature) + "\",\"Humi\":\"" + String(humidity) + "\",\"eCO2\":\"" + String(sgp.eCO2) + "\",\"TVOC\":\"" + String(sgp.TVOC) + "\"}");
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sgp.getIAQBaseline(&eCO2_base, &TVOC_base);
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// read dht11 sensor
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temperature = float(dht.readTemperature());
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humidity = float(dht.readHumidity());
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// check if any errors occured when reading sensors
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checkForError();
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}
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// function to display data on oled screen
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void displayData() {
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// clear display for new info
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display.clearDisplay();
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// set custom text properties
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display.setTextSize(2);
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display.setTextColor(SH110X_WHITE);
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display.setCursor(0, 0);
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// display info on oled screen
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display.println((String) "Temp: " + int(temperature) + "C" + '\n'
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+ "Humi: " + int(humidity) + "%" + '\n'
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+ "eCO2: " + int(sgp.eCO2) + '\n'
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+ "TVOC: " + int(sgp.TVOC));
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// display the screen
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display.display();
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}
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// setup function
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void setup() {
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// make serial connection at 115200 baud
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Serial.begin(115200);
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// tell display what settings to use
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display.begin(i2c_adress, true);
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display.clearDisplay();
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// tell sensors to start reading
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dht.begin();
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sgp.begin();
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pinMode(MICPIN, INPUT);
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pinMode(DHTPIN, INPUT);
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websocketSetup();
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resetValues();
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}
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// loop function
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void loop() {
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// loop the websocket connection so it stays alive
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webSocket.loop();
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// update when interval is met
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if (currentMillis - lastMillis >= interval){
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lastMillis = millis();
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update();
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}
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// update the counter
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currentMillis = millis();
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}
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@@ -1,13 +1,22 @@
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#ifndef nodeClass_h
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#define nodeClass_h
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// include these libraries
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#include <Wire.h>
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#include <Adafruit_SH110X.h>
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#include <Adafruit_SGP30.h>
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#include <DHT.h>
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#include <WiFiMulti.h>
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#include <WiFi.h>
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#include <WebSocketsClient.h>
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#include "Arduino.h"
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class nodeReadings {
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private:
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public:
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nodeReadings();
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void readDht();
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void printNode();
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void resetValues();
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// class code goes here
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};
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#endif
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