Hallo,
In meinem Programm sollte der serielle Monitor eigentlich Werte von einem CO2 Sensor anzeigen, er schreibt aber nur so was wie "UU??[U?". Hat jemand eine Idee, wie man das lesbar machen kann?
#include "WiFi.h"
#include "ESPAsyncWebServer.h"
#include "MHZ19.h"
#include "SoftwareSerial.h"
#include "DHTesp.h"
const char* ssid = "BG_Schneiderei";
const char* password = "";
#define RX_PIN 33 // Rx pin which the MHZ19 Tx pin is attached to
#define TX_PIN 32 // Tx pin which the MHZ19 Rx pin is attached to
#define BAUDRATE 9600 // Device to MH-Z19 Serial baudrate (should not be changed)
#define dhtPin 4 // verbunden mit Data-Pin des DHT22
//#define Test
AsyncWebServer server(80); // http port 80
DHTesp dht;
MHZ19 myMHZ19; // Constructor for library
SoftwareSerial mySerial(RX_PIN, TX_PIN); // create device to MH-Z19 serial
void setup()
{
Serial.begin(115200); // Datenrate serieller Monitor
dht.setup(dhtPin, DHTesp::DHT22); // am dhtPin ist ein DHT22 angeschlossen
mySerial.begin(BAUDRATE); // (Uno example) device to MH-Z19 serial start
myMHZ19.begin(mySerial); // *Serial(Stream) refence must be passed to library begin().
myMHZ19.autoCalibration(); // Turn auto calibration ON (OFF autoCalibration(false))
// WiFi.begin();
while (WiFi.status() != WL_CONNECTED) {
WiFi.begin(ssid, password);
delay(1000);
Serial.println("Connecting to WiFi..");
}
Serial.println(WiFi.localIP()); // Ausgabe der IP-Adr. über seriellen Monitor
server.on("/temperature", HTTP_GET, [](AsyncWebServerRequest * request) { //temperature Route
float temperature = dht.getTemperature();
request->send(200, "text/plain", String(temperature) + " C");
});
server.on("/humidity", HTTP_GET, [](AsyncWebServerRequest * request) { //humidity Route
float humidity = dht.getHumidity();
request->send(200, "text/plain", String(humidity) + " %");
});
server.on("/co2", HTTP_GET, [](AsyncWebServerRequest * request) { //co2 Route
int co2 = myMHZ19.getCO2();
request->send(200, "text/plain", String(co2) + " ppm");
});
server.begin(); // Start des Servers
}
unsigned long getDataTimer = 0;
void loop()
{
if (millis() - getDataTimer >= 2000)
{
float temperature = dht.getTemperature();
float humidity = dht.getHumidity();
Serial.print("Temperatur: ");
Serial.print(temperature);
Serial.print(" °C Feuchtigkeit: ");
Serial.println(humidity);
int CO2 = myMHZ19.getCO2(); // Request CO2 (as ppm)
Serial.print("CO2 (ppm): ");
Serial.print(CO2);
int8_t Temp = myMHZ19.getTemperature(); // Request Temperature (as Celsius)
Serial.print(" Temperatur CO2Sens (°C): ");
Serial.println(Temp);
getDataTimer = millis();
}
}
