Mình đang làm một dự án về máy đo chất lượng không khí và đưa dữ liệu lên IO-Adafruit bằng ESP32 và cảm biến bụi SDS011. Nhưng mà hiện tại sau khi đã add thư viện vào, và mình coding để khai báo thư viện SDS011 nhưng lại hiện lỗi như vầy là sao ạ
[upl-image-preview url=https://making.vn/assets/files/2020-12-01/1606826250-655626-image.png]
đây là code ạ
#include <SPI.h>
#include <WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
#include "DHT.h"
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "esp32-hal-adc.h" // needed for adc pin reset
#include "soc/sens_reg.h" // needed for adc pin reset
uint64_t reg_b; // Used to store Pin registers
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for SSD1306 display connected using software SPI (default case):
#define OLED_MOSI 23
#define OLED_CLK 18
#define OLED_DC 4
#define OLED_CS 5
#define OLED_RESET 2
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT,
OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
const int numReadingsPM10 = 24;
const int numReadingsPM25 = 24;
const int numReadingsCO = 8;
WiFiClient client;
SDS011 my_sds;
const char *ssid = "Galaxy-M20"; // Enter your WiFi Name
const char *pass = "ac312124"; // Enter your WiFi Password
#define MQTT_SERV "io.adafruit.com"
#define MQTT_PORT 1883
#define MQTT_NAME "choudharyas" // Your Adafruit IO Username
#define MQTT_PASS "988c4e045ef64c1b9bc8b5bb7ef5f2d9" // Adafruit IO AIO key
#define DHTTYPE DHT11 // DHT 11
uint8_t DHTPin = 27;
DHT dht(DHTPin, DHTTYPE);
int error;
unsigned long interval = 3600000;
unsigned long previousMillis = 0;
int temperature, humidity, AQI;
float p10,p25;
int iMQ7 = 25;
int MQ7Raw = 0;
int MQ7ppm = 0;
double RvRo;
int ConcentrationINmgm3;
int readingsPM10[numReadingsPM10]; // the readings from the analog input
int readIndexPM10 = 0; // the index of the current reading
int totalPM10 = 0; // the running total
int averagePM10 = 0; // the average
int readingsPM25[numReadingsPM25]; // the readings from the analog input
int readIndexPM25 = 0; // the index of the current reading
int totalPM25 = 0; // the running total
int averagePM25 = 0; // the average
int readingsCO[numReadingsCO]; // the readings from the analog input
int readIndexCO = 0; // the index of the current reading
int totalCO = 0; // the running total
int averageCO = 0; // the average
Adafruit_MQTT_Client mqtt(&client, MQTT_SERV, MQTT_PORT, MQTT_NAME, MQTT_PASS);
Adafruit_MQTT_Publish AirQuality = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/AirQuality");
Adafruit_MQTT_Publish Temperature = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/Temperature");
Adafruit_MQTT_Publish Humidity = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/Humidity");
Adafruit_MQTT_Publish PM10 = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/PM10");
Adafruit_MQTT_Publish PM25 = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/PM25");
Adafruit_MQTT_Publish CO = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/CO");
//Adafruit_MQTT_Publish NH3 = Adafruit_MQTT_Publish(&mqtt,MQTT_NAME "/f/NH3");
void setup()
{
my_sds.begin(16,17);
Serial.begin(9600);
dht.begin();
display.begin(SSD1306_SWITCHCAPVCC);
delay(10);
pinMode(DHTPin, INPUT);
pinMode(iMQ7, INPUT);
Serial.println("Connecting to ");
Serial.println(ssid);
reg_b = READ_PERI_REG(SENS_SAR_READ_CTRL2_REG);
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED)
{
delay(550);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
for (int thisReading1 = 0; thisReading1 < numReadingsPM10; thisReading1++) {
readingsPM10[thisReading1] = 0;
}
for (int thisReading2 = 0; thisReading2 < numReadingsPM25; thisReading2++) {
readingsPM25[thisReading2] = 0;
}
for (int thisReading3 = 0; thisReading3 < numReadingsCO; thisReading3++) {
readingsCO[thisReading3] = 0;
}
display.clearDisplay();
display.display();
}
void loop()
{
unsigned long currentMillis = millis();
MQTT_connect();
if ((unsigned long)(currentMillis - previousMillis) >= interval) {
WRITE_PERI_REG(SENS_SAR_READ_CTRL2_REG, reg_b);
MQ7Raw = analogRead( iMQ7 );
Serial.print("MQ Raw: ");
Serial.println(MQ7Raw);
RvRo = MQ7Raw * (3.3 / 4095);
MQ7ppm = 3.027*exp(1.0698*( RvRo ));
Serial.print("CO: ");
Serial.println(MQ7ppm);
//Serial.println();
error = my_sds.read(&p25,&p10);
if (! error) {
Serial.println("P2.5: "+String(p25));
Serial.println("P10: "+String(p10));
}
}
temperature = dht.readTemperature();
humidity = dht.readHumidity();
Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println();
Serial.print("Humidity: ");
Serial.print(humidity);
Serial.println();
ConcentrationINmgm3 = MQ7ppm* (28.06/24.45); //Converting PPM to mg/m3. Where 28.06 is Molecular mass of CO and 24.45 is the Molar volume
Serial.print("mg/m3: "); // for more inforation on this follow: https://www.markes.com/Resources/Frequently-asked-questions/How-do-I-convert-units.aspx
Serial.println(ConcentrationINmgm3);
totalPM10 = totalPM10 - readingsPM10[readIndexPM10];
readingsPM10[readIndexPM10] = p10;
totalPM10 = totalPM10 + readingsPM10[readIndexPM10];
readIndexPM10 = readIndexPM10 + 1;
if (readIndexPM10 >= numReadingsPM10) {
readIndexPM10 = 0;
}
averagePM10 = totalPM10 / numReadingsPM10;
Serial.print("PM10 Average: ");
Serial.println(averagePM10);
totalPM25 = totalPM25 - readingsPM25[readIndexPM25];
readingsPM25[readIndexPM25] = p25;
totalPM25 = totalPM25 + readingsPM25[readIndexPM25];
readIndexPM25 = readIndexPM25 + 1;
if (readIndexPM25 >= numReadingsPM25) {
readIndexPM25 = 0;
}
averagePM25 = totalPM25 / numReadingsPM25;
Serial.print("PM2.5 Average: ");
Serial.println(averagePM25);
totalCO = totalCO - readingsCO[readIndexCO];
readingsCO[readIndexCO] = ConcentrationINmgm3;
totalCO = totalCO + readingsCO[readIndexCO];
readIndexCO = readIndexCO + 1;
if (readIndexCO >= numReadingsCO) {
readIndexCO = 0;
}
averageCO = totalCO / numReadingsCO;
Serial.print("CO Average: ");
Serial.println(averageCO);
if (averagePM10 > averagePM25){
AQI = averagePM10;
}
else {
AQI = averagePM25;
}
if (! Temperature.publish(temperature))
{
delay(30000);
}
if (! Humidity.publish(humidity))
{
delay(30000);
}
if (! PM10.publish(averagePM10))
{
delay(30000);
}
if (! PM25.publish(averagePM25))
{
delay(30000);
}
if (! CO.publish(MQ7ppm))
{
delay(30000);
}
if (! AirQuality.publish(AQI))
{
delay(30000);
}
displayvalues();
delay(10000);
//delay(3000);
}
void displayvalues()
{
display.clearDisplay();
display.setTextSize(2);
display.setCursor(0,15);
display.println("CO: ");
display.setCursor(40,15);
display.println(averageCO);
display.setTextSize(1);
display.setCursor(68,35);
display.println("mg/m3");
display.display();
delay(2000);
display.clearDisplay();
display.setTextSize(2);
display.setCursor(0,5);
display.println("Temp:");
display.setCursor(75,5);
display.println(temperature);
display.setCursor(101,5);
display.println("C");
display.setCursor(0,28);
display.println("Humid:");
display.setCursor(75,28);
display.println(humidity);
display.setCursor(101,28);
display.println("%");
display.display();
display.clearDisplay();
delay(2000);
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(0,5);
display.println("PM2.5: ");
display.setCursor(75,5);
display.println(averagePM25);
display.setCursor(0,28);
display.println("PM10: ");
display.setCursor(75,28);
display.println(averagePM10);
display.setTextSize(1);
display.setCursor(90,49);
display.println("ug/m3");
display.display();
delay(2000);
}
void MQTT_connect()
{
int8_t ret;
// Stop if already connected.
if (mqtt.connected())
{
return;
}
uint8_t retries = 3;
while ((ret = mqtt.connect()) != 0) // connect will return 0 for connected
{
mqtt.disconnect();
delay(5000); // wait 5 seconds
retries--;
if (retries == 0)
{
// basically die and wait for WDT to reset me
while (1);
}
}
}```
Mong mọi người có thể giúp em ạ
