convert Hex result of sensor to integer value

Projects Programming
15

Hello all,

this sketch works fine now:

It was indeed as AWOL sayd, I had to increase the delay, that the message gets received completely.

thanks a lot.

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

byte reading[12];           // byte array where the Serial readings are stored.
int oxigen_concentration;   // Sensor value 1;
int flow_rate;              // Sensor value 2;

void setup() {
  mySerial.begin(9600);   // Serial to send stuff to PC.
  Serial.begin(9600);     // Serial to communicate with sensor.
}

void loop() {

  // Query the sensor data.
  Serial.write(0x11);
  Serial.write(0x01);
  Serial.write(0x01);
  Serial.write(0xED);

  delay(100);

  // Read the answer from the sensor.
  int i = 0;
  while (Serial.available()) {

    reading[i] = Serial.read();

    i = i + 1;
  }


  oxigen_concentration = (int)reading[3] * 256 + (int)reading[4];
  flow_rate = reading[5] * 256 + reading[6];
  
  mySerial.println(oxigen_concentration);
  mySerial.println(flow_rate);
    
  delay(1000);
}