BMP 280 and AM2302 Help

Code
#1

So I have two sets of working codes. One for a BMP280 and one for a AM2302. I have them both wired correctly to an Arduino Nano and can get them both to run on separate sketches.

My goal is to add the BMP280 coding to my AM2302 code… but have no clue what to/how to do that! Ideally they would run at the same time… but am also okay with having two separate functions like the AM2302 code could allow.

This is the BMP280 code:

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>

#define BMP_SCK (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS (10)

Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);

void setup() {
Serial.begin(9600);
Serial.println(F(“BMP280 test”));

if (!bmp.begin(0x76)) {
Serial.println(F(“Could not find a valid BMP280 sensor, check wiring!”));
while (1);
}

/* Default settings from datasheet. /
bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, / Operating Mode. /
Adafruit_BMP280::SAMPLING_X2, / Temp. oversampling /
Adafruit_BMP280::SAMPLING_X16, / Pressure oversampling /
Adafruit_BMP280::FILTER_X16, / Filtering. /
Adafruit_BMP280::STANDBY_MS_500); / Standby time. */
}

void loop() {
Serial.print(F(“Temperature = “));
Serial.print(bmp.readTemperature());
Serial.println(” *C”);

Serial.print(F("Pressure = "));
Serial.print(bmp.readPressure());
Serial.println(" Pa");

Serial.print(F("Approx altitude = "));
Serial.print(bmp.readAltitude(1013.25)); /* Adjusted to local forecast! */
Serial.println(" m");

Serial.println();
delay(2000);

}

This is the code for the AM2302:

// Include Libraries
#include “Arduino.h”
#include “DHT.h”

// Pin Definitions
#define AM2302_PIN_SIG 2

// Global variables and defines

// object initialization
DHT am2302(AM2302_PIN_SIG);
Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);

// define vars for testing menu
const int timeout = 3000; //define timeout of 3 sec
char menuOption = 0;
long time0;

// Setup the essentials for your circuit to work. It runs first every time your circuit is powered with electricity.
void setup()
{
// Setup Serial which is useful for debugging
// Use the Serial Monitor to view printed messages
Serial.begin(9600);
while (!Serial) ; // wait for serial port to connect. Needed for native USB
Serial.println(“start”);

am2302.begin();
menuOption = menu();

}

// Main logic of your circuit. It defines the interaction between the components you selected. After setup, it runs over and over again, in an eternal loop.
void loop()
{

if(menuOption == '1') {
// AM2302 Humidity and Temperature Sensor - Test Code
// Reading humidity in %
float am2302Humidity = am2302.readHumidity();
// Read temperature in Celsius, for Fahrenheit use .readTempF()
float am2302TempC = am2302.readTempC();
Serial.print(F("Humidity: ")); Serial.print(am2302Humidity); Serial.print(F(" [%]\t"));
Serial.print(F("Temp: ")); Serial.print(am2302TempC); Serial.println(F(" [C]"));

}

if (millis() - time0 > timeout)
{
    menuOption = menu();
}

}

// Menu function for selecting the components to be tested
// Follow serial monitor for instrcutions
char menu()
{

Serial.println(F("\nWhich component would you like to run?"));
Serial.println(F("(1) AM2302 Humidity and Temperature Sensor"));
Serial.println(F("(menu) Press 1 to activate Humidity and Temperature Sensor for 3 seconds\n"));
while (!Serial.available());

// Read data from serial monitor if received
while (Serial.available()) 
{
    char c = Serial.read();
    if (isAlphaNumeric(c)) 
    {   
        
        if(c == '1') 
			Serial.println(F("Now Running AM2302 Humidity and Temperature Sensor"));
        else
        {
            Serial.println(F("illegal input!"));
            return 0;
        }
        time0 = millis();
        return c;
    }
}

}

#2

Hi

I’ll start with formatting what you posted and then we can merge the two.

This is the BMP280 code

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>

#define BMP_SCK (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS (10)

Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);

void setup() {
    Serial.begin(9600);
    Serial.println(F(“BMP280 test”));

    if (!bmp.begin(0x76)) {
        Serial.println(F(“Could not find a valid BMP280 sensor, check wiring!”));
        while (1);
    }

    /_ Default settings from datasheet. /
    bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, / Operating Mode. /
    Adafruit_BMP280::SAMPLING_X2, / Temp. oversampling /
    Adafruit_BMP280::SAMPLING_X16, / Pressure oversampling /
    Adafruit_BMP280::FILTER_X16, / Filtering. /
    Adafruit_BMP280::STANDBY_MS_500); / Standby time. _/
}

void loop() {
    Serial.print(F(“Temperature = “));
    Serial.print(bmp.readTemperature());
    Serial.println(” \*C”);

    Serial.print(F("Pressure = "));
    Serial.print(bmp.readPressure());
    Serial.println(" Pa");

    Serial.print(F("Approx altitude = "));
    Serial.print(bmp.readAltitude(1013.25)); /_ Adjusted to local forecast! _/
    Serial.println(" m");

    Serial.println();
    delay(2000);
}

This is the code for the AM2302

// Include Libraries
#include “Arduino.h”
#include “DHT.h”

// Pin Definitions
#define AM2302_PIN_SIG 2

// Global variables and defines

// object initialization
DHT am2302(AM2302_PIN_SIG);
Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);

// define vars for testing menu
const int timeout = 3000; //define timeout of 3 sec
char menuOption = 0;
long time0;

// Setup the essentials for your circuit to work. It runs first every time your circuit is powered with electricity.
void setup()
{
    // Setup Serial which is useful for debugging
    // Use the Serial Monitor to view printed messages
    Serial.begin(9600);
    while (!Serial) ; // wait for serial port to connect. Needed for native USB
    Serial.println(“start”);

    am2302.begin();
    menuOption = menu();
}

// Main logic of your circuit. It defines the interaction between the components you selected. After setup, it runs over and over again, in an eternal loop.
void loop()
{
    if(menuOption == '1') {
    // AM2302 Humidity and Temperature Sensor - Test Code
    // Reading humidity in %
    float am2302Humidity = am2302.readHumidity();
    // Read temperature in Celsius, for Fahrenheit use .readTempF()
    float am2302TempC = am2302.readTempC();
    Serial.print(F("Humidity: ")); Serial.print(am2302Humidity); Serial.print(F(" [%]\t"));
    Serial.print(F("Temp: ")); Serial.print(am2302TempC); Serial.println(F(" [C]"));
    }

    if (millis() - time0 > timeout)
    {
        menuOption = menu();
    }
}

// Menu function for selecting the components to be tested
// Follow serial monitor for instrcutions
char menu()
{
    Serial.println(F("\nWhich component would you like to run?"));
    Serial.println(F("(1) AM2302 Humidity and Temperature Sensor"));
    Serial.println(F("(menu) Press 1 to activate Humidity and Temperature Sensor for 3 seconds\n"));
    while (!Serial.available());

    // Read data from serial monitor if received
    while (Serial.available())
    {
        char c = Serial.read();
        if (isAlphaNumeric(c))
        {

                if(c == '1')
                    Serial.println(F("Now Running AM2302 Humidity and Temperature Sensor"));
                else
                {
                    Serial.println(F("illegal input!"));
                    return 0;
                }
                time0 = millis();
                return c;
            }
        }
    }
}
#3

As you probably know, there can be only one setup and one loop function.

Combine the includes:

#include “Arduino.h”
#include “DHT.h”
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>

Combine the pin definitions:

#define AM2302_PIN_SIG 2
#define BMP_SCK (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS (10)

Combine setup and remove commented code:

Adafruit_BMP280 bmp; // I2C
DHT am2302(AM2302_PIN_SIG);

// define vars for testing menu
const int timeout = 3000; //define timeout of 3 sec
char menuOption = 0;
long time0;

Combine the two setup functions:

void setup() {
    Serial.begin(9600);
    while (!Serial) ; // wait for serial port to connect. Needed for native USB
    Serial.println(F(“BMP280 test”));

    if (!bmp.begin(0x76)) {
        Serial.println(F(“Could not find a valid BMP280 sensor, check wiring!”));
        while (1);
    }

    /_ Default settings from datasheet. /
    bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, / Operating Mode. /
    Adafruit_BMP280::SAMPLING_X2, / Temp. oversampling /
    Adafruit_BMP280::SAMPLING_X16, / Pressure oversampling /
    Adafruit_BMP280::FILTER_X16, / Filtering. /
    Adafruit_BMP280::STANDBY_MS_500); / Standby time. _/

    am2302.begin();
    menuOption = menu();
}

Combine the loop functions:

void loop() {
    Serial.print(F(“Temperature = “));
    Serial.print(bmp.readTemperature());
    Serial.println(” \*C”);

    Serial.print(F("Pressure = "));
    Serial.print(bmp.readPressure());
    Serial.println(" Pa");

    Serial.print(F("Approx altitude = "));
    Serial.print(bmp.readAltitude(1013.25)); /_ Adjusted to local forecast! _/
    Serial.println(" m");

    Serial.println();

    if(menuOption == '1') {
    // AM2302 Humidity and Temperature Sensor - Test Code
    // Reading humidity in %
    float am2302Humidity = am2302.readHumidity();
    // Read temperature in Celsius, for Fahrenheit use .readTempF()
    float am2302TempC = am2302.readTempC();
    Serial.print(F("Humidity: ")); Serial.print(am2302Humidity); Serial.print(F(" [%]\t"));
    Serial.print(F("Temp: ")); Serial.print(am2302TempC); Serial.println(F(" [C]"));
    }

    if (millis() - time0 > timeout)
    {
        menuOption = menu();
    }
}

And then add the menu function:

// Menu function for selecting the components to be tested
// Follow serial monitor for instrcutions
char menu()
{
    Serial.println(F("\nWhich component would you like to run?"));
    Serial.println(F("(1) AM2302 Humidity and Temperature Sensor"));
    Serial.println(F("(menu) Press 1 to activate Humidity and Temperature Sensor for 3 seconds\n"));
    while (!Serial.available());

    // Read data from serial monitor if received
    while (Serial.available())
    {
        char c = Serial.read();
        if (isAlphaNumeric(c))
        {

                if(c == '1')
                    Serial.println(F("Now Running AM2302 Humidity and Temperature Sensor"));
                else
                {
                    Serial.println(F("illegal input!"));
                    return 0;
                }
                time0 = millis();
                return c;
            }
        }
    }
}

My next post will show the entire file.

#4

As one file:

#include “Arduino.h”
#include “DHT.h”
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>

// Pin Definitions
#define AM2302_PIN_SIG 2
#define BMP_SCK (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS (10)

Adafruit_BMP280 bmp; // I2C
DHT am2302(AM2302_PIN_SIG);

// define vars for testing menu
const int timeout = 3000; //define timeout of 3 sec
char menuOption = 0;
long time0;

void setup() {
    Serial.begin(9600);
    while (!Serial) ; // wait for serial port to connect. Needed for native USB
    Serial.println(F(“BMP280 test”));

    if (!bmp.begin(0x76)) {
        Serial.println(F(“Could not find a valid BMP280 sensor, check wiring!”));
        while (1);
    }

    /_ Default settings from datasheet. /
    bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, / Operating Mode. /
    Adafruit_BMP280::SAMPLING_X2, / Temp. oversampling /
    Adafruit_BMP280::SAMPLING_X16, / Pressure oversampling /
    Adafruit_BMP280::FILTER_X16, / Filtering. /
    Adafruit_BMP280::STANDBY_MS_500); / Standby time. _/

    am2302.begin();
    menuOption = menu();
}

void loop() {
    Serial.print(F(“Temperature = “));
    Serial.print(bmp.readTemperature());
    Serial.println(” \*C”);

    Serial.print(F("Pressure = "));
    Serial.print(bmp.readPressure());
    Serial.println(" Pa");

    Serial.print(F("Approx altitude = "));
    Serial.print(bmp.readAltitude(1013.25)); /_ Adjusted to local forecast! _/
    Serial.println(" m");

    Serial.println();

    if(menuOption == '1') {
    // AM2302 Humidity and Temperature Sensor - Test Code
    // Reading humidity in %
    float am2302Humidity = am2302.readHumidity();
    // Read temperature in Celsius, for Fahrenheit use .readTempF()
    float am2302TempC = am2302.readTempC();
    Serial.print(F("Humidity: ")); Serial.print(am2302Humidity); Serial.print(F(" [%]\t"));
    Serial.print(F("Temp: ")); Serial.print(am2302TempC); Serial.println(F(" [C]"));
    }

    if (millis() - time0 > timeout)
    {
        menuOption = menu();
    }
}

// Menu function for selecting the components to be tested
// Follow serial monitor for instrcutions
char menu()
{
    Serial.println(F("\nWhich component would you like to run?"));
    Serial.println(F("(1) AM2302 Humidity and Temperature Sensor"));
    Serial.println(F("(menu) Press 1 to activate Humidity and Temperature Sensor for 3 seconds\n"));
    while (!Serial.available());

    // Read data from serial monitor if received
    while (Serial.available())
    {
        char c = Serial.read();
        if (isAlphaNumeric(c))
        {

                if(c == '1')
                    Serial.println(F("Now Running AM2302 Humidity and Temperature Sensor"));
                else
                {
                    Serial.println(F("illegal input!"));
                    return 0;
                }
                time0 = millis();
                return c;
            }
        }
    }
}