Smikkelbakje/J1B3-Sensor-boxes
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updates node code

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This commit is contained in:
sietse jonker
2024-02-09 21:40:32 +01:00
parent c8fe0d6b56
commit 7569f3b6ac
1 changed files with 56 additions and 38 deletions
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90
arduino/node-code.ino
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@@ -1,74 +1,92 @@
// Sietse Jonker // Sietse Jonker
// 09/02/2024 // 09/02/2024
#include <Wire.h> // Only needed for Arduino 1.6.5 and earlier #include <Wire.h>
#include "SSD1306Wire.h" // legacy: #include "SSD1306.h" #include "SSD1306Wire.h"
#include "Adafruit_SGP30.h" #include "Adafruit_SGP30.h"
#include "images.h"
#include "DHT.h" #include "DHT.h"
#define MICPIN 6
#define DHTPIN 7 #define DHTPIN 7
#define SCL 9
#define SDA 8
#define DHTTYPE DHT11 #define DHTTYPE DHT11
SSD1306Wire display(0x3c, SDA, SCL); // ADDRESS, SDA, SCL - SDA and SCL usually populate automatically based on your board's pins_arduino.h e.g. https://github.com/esp8266/Arduino/blob/master/variants/nodemcu/pins_arduino.h SSD1306Wire display(0x3c, SDA, SCL);
DHT dht(DHTPIN, DHTTYPE); DHT dht(DHTPIN, DHTTYPE);
Adafruit_SGP30 sgp; Adafruit_SGP30 sgp;
uint32_t getAbsoluteHumidity(float temperature, float humidity) { uint16_t TVOC_base, eCO2_base;
// approximation formula from Sensirion SGP30 Driver Integration chapter 3.15 int counter = 0;
const float absoluteHumidity = 216.7f * ((humidity / 100.0f) * 6.112f * exp((17.62f * temperature) / (243.12f + temperature)) / (273.15f + temperature)); // [g/m^3] float temperature = 0;
const uint32_t absoluteHumidityScaled = static_cast<uint32_t>(1000.0f * absoluteHumidity); // [mg/m^3] float humidity = 0;
return absoluteHumidityScaled; int eCO2 = 0;
int TVOC = 0;
bool noise = false;
void resetValues() {
TVOC_base, eCO2_base;
counter = 0;
temperature = 0;
humidity = 0;
eCO2 = 0;
TVOC = 0;
noise = false;
}
void displayData(){
display.setFont(ArialMT_Plain_16);
display.setTextAlignment(TEXT_ALIGN_LEFT);
display.drawString(0, 0, String(sgp.eCO2) + " ppm" + " " + String(sgp.TVOC) + " ppb");
display.drawString(0, 18, String(temperature) + " C");
display.drawString(0, 39, String(humidity) + "%");
display.display();
} }
void setup() { void setup() {
Serial.begin(115200); Serial.begin(115200);
// Initialising the UI will init the display too.
display.init(); display.init();
dht.begin();
display.flipScreenVertically(); display.flipScreenVertically();
Serial.println("SGP30 test"); dht.begin();
if (!sgp.begin()) { sgp.begin();
Serial.println("Sensor not found :("); pinMode(MICPIN, INPUT);
while (1) pinMode(DHTPIN, INPUT);
;
} resetValues();
Serial.print("Found SGP30 serial #");
Serial.print(sgp.serialnumber[0], HEX); display.setFont(ArialMT_Plain_16);
Serial.print(sgp.serialnumber[1], HEX); display.setTextAlignment(TEXT_ALIGN_LEFT);
Serial.println(sgp.serialnumber[2], HEX);
} }
void loop() { void loop() {
display.clear(); display.clear();
display.setFont(ArialMT_Plain_24);
display.setTextAlignment(TEXT_ALIGN_LEFT);
display.drawString(0, 0, String(sgp.eCO2) + "ppm");
display.drawString(0, 32, String(dht.readTemperature()));
display.display();
if (!sgp.IAQmeasure()) { if (!sgp.IAQmeasure()) {
Serial.println("Measurement failed"); Serial.println("SGP30: BAD");
return; return;
} }
else {
uint16_t TVOC_base, eCO2_base; Serial.println("SGP30: OK");
if (!sgp.getIAQBaseline(&eCO2_base, &TVOC_base)) {
Serial.println("Failed to get baseline readings");
return;
} }
temperature = float(dht.readTemperature());
humidity = float(dht.readHumidity());
displayData();
sgp.getIAQBaseline(&eCO2_base, &TVOC_base);
Serial.print("eCO2 "); Serial.print("eCO2 ");
Serial.print(sgp.eCO2); Serial.print(sgp.eCO2);
Serial.println(" ppm"); Serial.println(" ppm");
delay(1000); delay(100);
counter++;
} }